Siemens AC-21A, AC-21, AC-3 User Manual

Switch Disconnectors and

Fuses

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Introduction

SENTRIC switch disconnectors

SENTRIC LD main control and EMERGENCY-STOP switches from 16 A to 125 A

General data Front mounting

Mounting in distribution boards Molded-plastic enclosures Accessories

SENTRIC K

switch disconnectors from 63 A to 1000 A

General data Base mounting

Molded-plastic enclosures Accessories

SENTRIC NP fuse switch disconnectors

General data

For power distribution Accessories

SENTRIC KL switch disconnectors with fuses

General data

Surface and flush mounting Accessories

Fuses and fuse systems

Introduction

SITOR semiconductor protection fuses NEOZED fuses

DIAZED fuses LV HRC fuses Cylindrical fuses

Siemens LV 10 · 2004

Switch Disconnectors and Fuses

Introduction

■ Overview

		Type			3LD20		3LD21	3LD22	3LD25	3LD27	3LD28
		SENTRIC LD main control and EMERGENCY-STOP switches from 16 A to 125 A
									63
		Rated uninterrupted current IU	A		16	25		32		100	125
		at 35 °C ambient temperature
		Rated operating voltage Ue	V	690		690		690	690	690	690
7		AC-3 motor load switch
		operational switching of individual motors							11.0
		at 220 ... 240 V	kW		3.0	4.0		5.5		18.5	22.0
		at 380 ... 440 V	kW		5.5	7.5		9.5	18.5	30.0	37.0
									15.0
		at 660/690 V	kW		5.5	7.5		9.5		22.0	30.0
		AC-23A main control switch,
		maintenance switch
		Frequent, but not operational switching of
		individual motors							11.0
		at 220 ... 240 V	kW		4.0	5.0		6.0		18.5	22.0
		at 380 ... 440 V	kW		7.5	9.5		11.5	22.0	37.0	45.0
									18.5
		at 660/690 V	kW		7.5	9.5		11.5		30.0	37.0
		Switch versions
		Front mounting
		• Central								–	–
		• Four-hole
		Base mounting
		• Central								–	–
		• Four-hole
		Distribution board mounting
		Molded-plastic enclosure
		• Heavy-gauge threaded joints
		• Metric screws
		Switch accessories
		4th pole (N conductor)
		(leading switch-on,
		delayed switch-off contact)
		N terminal
		PE/ground terminal
		Auxiliary contacts
		1 NO + 1 NC
		1 NO
		1 NC

7/2	Siemens LV 10 · 2004

Switch Disconnectors and Fuses

Introduction

Type		3NP	3K
SENTRIC
			63 ... 1000
Rated uninterrupted current IU	A	160 ... 630
at 35 °C ambient temperature
Rated operating voltage Ue	V	690	690
AC-21					7
at 400 V
at 500 V
at 690 V
AC-22
at 400 V
at 500 V
at 690 V
AC-23
at 400 V
at 500 V		–
at 690 V		–
Switch versions
Front mounting		–
Base mounting
Busbars			–
• 40 mm
• 60 mm
• 185 mm		–	–
Molded-plastic enclosure
Switch accessories
4th pole (N conductor)		–
(leading switch-on,
delayed switch-off contact)
Auxiliary contacts
1 NO + 1 NC		–
1 CO
Fuse monitoring
• with circuit-breakers
• with electronics

Siemens LV 10 · 2004	7/3

SENTRIC Switch Disconnectors

SENTRIC LD Main Control and EMERGENCY STOP Switches from 16 A to 125 A

General data

■ Technical specifications

		Standards				DIN VDE 0660, IEC 60947
		Switch			Type	3LD2 0		3LD2 1		3LD2 2		3LD2 5		3LD2 7		3LD2 8
		Number of contacts				3/4		3/4		3/4		3/4		3/4		3/4
		Rated insulation voltage Ui			V	690		690		690		690		690		690
		Rated operating voltage Ue			AC V	690		690		690		690		690		690
		Rated frequency			Hz	50 ... 60		50 ... 60		50 ... 60		50 ... 60		50 ... 60		50 ... 60
		Rated impulse withstand voltage Uimp			kV	6		6		6		6		6		6
		Rated short-time withstand current (1 s current, rms value)			A	340		640		640		1260		2000		2000
		Short-circuit protection, max. back-up fuse (gL)			A	20		25		50		63		100		125
		Rated uninterrupted current Iu			A	16		25		32		63		100		125
		AC-21A load-break switch		Rated operating current Ie	A	16		25		32		63		100		125
		AC-3 motor load switch		Rating		3.0		4.0		5.5		11.0		18.5		22.0
		in-service switching		at 220 V ... 240 V	kW
		of individual motors		at 380 V ... 440 V	kW	5.5		7.5		9.5		18.5		30.0		37.0
				at 660 V/690 V	kW	5.5		7.5		9.5		15.0		22.0		30.0
		AC-23A main control switch		Rating		4.0		5.0		6.0		11.0		18.5		22.0
		Maintenance switch		at 220 V ... 240 V	kW
		frequent, but not		at 380 V ... 440 V	kW	7.5		9.5		11.5		22.0		37.0		45.0
		in-service switching		at 660 V/690 V	kW	7.5		9.5		11.5		18.5		30.0		37.0
		of individual motors
7		Power loss per conducting path at Ie			W	0.5		1.1		1.8		4.5		7.5		12
		Touch protection to DIN VDE 0106 Part 100				yes		yes		yes		yes		yes		yes
		Mechanical endurance			Oper-	100 000		100 000		100 000		100 000		100 000		100 000
					ating
					cycles
					1/h
		Operating frequency				50		50		50		50		50		50
		Permissible ambient temperature			°C	–25 ... +55		–25 ... +55		–25 ... +55		–25 ... +55		–25 ... +55		–25 ... +55
		Isolating characteristics			up to ...	690		690		690		690		690		690
		Main control and EMERGENCY-STOP switch characteristics1)			V	yes		yes		yes		yes		yes		yes
		Conductor cross-sections for main conductors
		Connection type
					mm2	Clamp connections
		solid or stranded				1 ... 6		1.5 ... 16		1.5 ... 16		2.5 ... 35		4 ... 50		4 ... 50
		flexible with end sleeve (max.)			mm2	4		10		10		16		35		35
		Auxiliary switches
		Rated insulation voltage Ui			V	500		500		500		500		500		500
		Rated operating voltage Ue			AC V	500		500		500		500		500		500
		Rated uninterrupted current Iu			A	10		10		10		10		10		10
		Rated operating current Ie	AC-15	at 120 V	A
						6		6		6		6		6		6
				at 220 V ... 240 V	A	3		3		3		3		3		3
				at 380 V ... 415 V	A	1.8		1.8		1.8		1.8		1.8		1.8
				at 500 V	A
						1.4		1.4		1.4		1.4		1.4		1.4
		Short-circuit protection, auxiliary switch, max. back-up fuse (gL/gG) A				10		10		10		10		10		10
		Conductor cross-section for auxiliary conductors
		Connection type
					mm2	Clamp connections
		solid or stranded				2 ×		1 ×		1 ×		1 ×		1 ×		1 ×
					mm2	(0.75 ... 2.5)		(0.75 ... 4)		(0.75 ... 4)		(0.75 ... 4)		(0.75 ... 4)		(0.75 ... 4)
		Finely stranded with end sleeve				2 ×		1 ×		1 ×		1 ×		1 ×		1 ×
						(0.75 ... 2.5)		(0.75 ... 2.5)		(0.75 ... 2.5)		(0.75 ... 2.5)		(0.75 ... 2.5)		(0.75 ... 2.5)
		Standards				UL/CSA
		Switch			Type	3LD2 0		3LD2 1		3LD2 2		3LD2 5		3LD2 7		3LD2 8
		Rated operating voltage Ue			AC V	600		600		600		600		600		600
		Rated uninterrupted current Iu		Current rating	A	10		20		30		60		100		125
						600 A		600 A		600 A		–		–		–
		Conventional thermal current Ith		Pilot duty	A	P600		P600		P600
						16		25		32		63		100		125
		Max. rating (AC-3)		3 120 V	HP	1		–		–		–		–		–
		AC motors 40 Hz ... 60 Hz		240 V	HP	3		7.5		10		15		30		40
		(HP = PS)		480 V	HP
						7.5		10		20		40		60		75
				600 V	HP	10		15		30		50		75		100
				1 120 V	HP
						0.5		2		2		–		–		–
				240 V	HP	1.5		3		3		10		–		–
		Conductor cross-sections	copper cable		AWG	18 ... 10		14 ... 8		14 ... 8		14 ... 6		12 ... 1		12 ... 1
		Tightening torque			Nm	1.5 ... 2		2 ... 2.5		2 ... 2.5		2.5 ... 3		2.5 ... 3		2.5 ... 3

1)With appropriate operating mechanisms according to DIN VDE 0113 (see selection and ordering data).

7/4	Siemens LV 10 · 2004

SENTRIC Switch Disconnectors

SENTRIC LD Main Control and EMERGENCY STOP Switches from 16 A to 125 A

Front mounting

■ Area of application

The SENTRIC 3LD2 switches are used for switching main control

Main control and EMERGENCY-STOP switches are, in accor-

and auxiliary circuits, but they are also implemented for switch-

dance with IEC 60947-3/VDE 0660 Part 107 (EN 60947-3), man-

ing three-phase induction motors and other loads for mainte-

ually operated switch disconnectors and comply with the isola-

nance and repair.

tion conditions and the requirements of machine guideline

They can be used as

EN 60204-1.

• On-Off switches,

• EMERCENCY-STOP switches and

• Main control switches according to EN 60204-1.

■ Selection and ordering data

Number and version

Rated data

DT

Four-hole

PS*

Weight

DT

center-hole mount-

PS*

Weight

of contacts

at 50 Hz ... 60 Hz

mounting

per PU

ing

per PU

380 V ... 440 V

approx.

Ø 22.5 mm

approx.

Main

Auxiliary

P/

Iu

contacts

contacts

AC-23A

kW

A

Order No.

kg

Order No.

kg

Main control and EMERGENCY-STOP switch with rotary operating

mechanism1)2)

7

• Lockable in 0 position with max. 3 padlocks

• IP65 degree of protection at the front

• Front plate

– 3LD2 0, 3LD2 1, 3LD2 2: 67 mm × 67 mm

– 3LD2 5 to 3LD2 8: 90 mm × 90 mm.

3

–

7.5

16

1 unit

0.207

A

1 unit

0.215

}

3LD2 003–0TK..

3LD2 054–0TK..

9.5

25

}

3LD2 103–0TK..

1 unit

0.206

A

3LD2 154–0TK..

1 unit

0.215

11.5

32

}

3LD2 203–0TK..

1 unit

0.206

A

3LD2 254–0TK..

1 unit

0.214

22

63

}

3LD2 504–0TK..

1 unit

0.424

A

3LD2 555–0TK..

1 unit

0.443

37

100

}

1 unit

0.501

3LD2 704–0TK..

–

45

125

A

3LD2 804–0TK..

1 unit

0.503

–

3LD2 203-0TK53

3 + N

–

7.5

16

}

3LD2 003–1TL..

1 unit

0.217

A

3LD2 054–1TL..

1 unit

0.230

9.5

25

A

1 unit

0.243

A

1 unit

0.256

3LD2 103–1TL..

3LD2 154–1TL..

11.5

32

A

3LD2 203–1TL..

1 unit

0.243

A

3LD2 254–1TL..

1 unit

0.260

22

63

}

3LD2 504–0TK..

1 unit

0.424

A

3LD2 555–0TK..

1 unit

0.443

+3)

1 unit

0.079

+3)

1 unit

0.079

}

3LD9 250–0B

}

3LD9 250–0B

37

100

}

3LD2 704–0TK..

1 unit

0.501

–

+3)

1 unit

0.101

}

3LD9 280–0B

45

125

A

3LD2 804–0TK..

1 unit

0.503

–

+3)

1 unit

0.101

}

3LD9 280–0B

Actuator

>

>

black

51

51

red/yellow (EMERGENCY-STOP)

53

53

1)Screw fixing or snap-on mounting on 35 mm rail is standard.

2)A terminal cover for the infeed side is included in the scope of supply.

3)4th contact as N conductor to be ordered separately, see Accessories.

* This quantity or a multiple thereof can be ordered.	Siemens LV 10 · 2004	7/5

SENTRIC Switch Disconnectors

SENTRIC LD Main Control and EMERGENCY STOP Switches from 16 A to 125 A

Front mounting

	Number and version		Rated data			DT	Order No.	PS*	Weight
	of the contacts		at 50 Hz ... 60 Hz						per PU
			380 V ... 440 V						approx.
	Main	Auxiliary	P/	P/	Iu
	contacts	contacts	AC-3 AC-
				23A
			kW	kW	A				kg

Main control and EMERGENCY-STOP switch with rotary operating mechanism

• IP65 degree of protection at the front

6		–	7.5	9.5	25	A	3LD2 103–3VK..	1 unit	0.380
3LD2 103-3VK53			9.5	11.5	32	A	3LD2 203–3VK..	1 unit	0.381
			18.5	22.0	63	A	3LD2 504–3VK..	1 unit	0.854

Selector switch with knob mechanism, knob cannot be locked

• black actuator, IP65 degree of protection at the front

	3		–	7.5	9.5	25	A	3LD2 123–7UK01			1 unit	0.374
				9.5	11.5	32	A	3LD2 223–7UK01			1 unit	0.378
		3LD2 123-7UK01		18.5	22.0	63	A	3LD2 524–7UK01			1 unit	0.841
				30.0	37.0	100	A				1 unit	1.060
7								3LD2 724–7UK01
		Actuator						>
		black							51
		red/yellow (EMERGENCY-STOP)							53

7/6	Siemens LV 10 · 2004	* This quantity or a multiple thereof can be ordered.

SENTRIC Switch Disconnectors

SENTRIC LD Main Control and EMERGENCY STOP Switches from 16 A to 125 A

Mounting in distribution boards

Number and version

Rated data

DT

Order No.

PS*

Weight

of contacts

at 50 Hz ... 60 Hz

per PU

380 V ... 440 V

approx.

Main

Auxiliary

P/

Iu

contacts

contacts

AC-23A

kW

A

kg

ON/OFF and EMERGENCY-STOP switches with masking plate and selector switch

•For mounting in a distribution board

•For screw-fixing and snapping onto a 35 mm rail

•Lockable in 0 position with max. 2 padlocks

•IP44 degree of protection at the front

3		–	7.5	16	A	3LD2 030–0TK..			1 unit	0.169
			9.5	25	A	3LD2 130–0TK..			1 unit	0.171
			11.5	32	A				1 unit	0.168
						3LD2 230–0TK..
			22	63	A	3LD2 530–0TK..			1 unit	0.311
			37	100	A				1 unit	0.379
						3LD2 730–0TK..
			45	125	A	3LD2 830–0TK..			1 unit	0.379
	3 + N	–	7.5	16	A	3LD2 030–1TL..			1 unit	0.183
3LD2 530-0TK13			9.5	25	A	3LD2 130–0TK..			1 unit	0.171		7
						+1)			1 unit	0.039
					}	3LD9 220–0C
			11.5	32	A	3LD2 230–0TK..			1 unit	0.168
						+1)			1 unit	0.039
					}	3LD9 220–0C
			22	63	A				1 unit	0.311
						3LD2 530–0TK..
						+1)			1 unit	0.080
					}	3LD9 250–0C
			37	100	A	3LD2 730–0TK..			1 unit	0.379
						+1)			1 unit	0.102
					}	3LD9 280–0C
			45	125	A	3LD2 830–0TK..			1 unit	0.379
						+1)			1 unit	0.102
					}	3LD9 280–0C
Actuator							>
black
							11
red/yellow (EMERGENCY-STOP)							13

1)4th contact as N-conductor to be ordered separately; see Accessories for base mounting and distribution board mounting.

* This quantity or a multiple thereof can be ordered.	Siemens LV 10 · 2004	7/7

SENTRIC Switch Disconnectors

SENTRIC LD Main Control and EMERGENCY STOP Switches from 16 A to 125 A

Molded-plastic enclosures

	Number and version		Rated data		DT	Order No.	PS*	Weight
	of contacts		at 50 Hz ... 60 Hz					per PU
			380 V ... 440 V					approx.
	Main	Auxiliary	P/	Iu
	contacts	contacts	AC-23A
			kW	A				kg

Main control and EMERGENCY-STOP switches

•With N or PE/ground terminal

•Heavy-gauge threaded joints

•Lockable in 0 position with max. 3 padlocks

•IP 65 degree of protection at the front

3				–	7.5	16		–
					9.5	25	A	3LD2 161–0TB..	1 unit	0.415
					11.5	32	A		1 unit	0.420
								3LD2 261–0TB..
					22	63	A	3LD2 562–0TB..	1 unit	0.801
					37	100	A	3LD2 7630TB..	1 unit	2.000
					45	125	A		1 unit	2.000
								3LD2 8630TB..
			3 + N	–	7.5	16		–
					9.5	25	A		1 unit	0.439
		3LD2 261-0TB13						3LD2 161–1TC..
					11.5	32	A	3LD2 261–1TC53	1 unit	0.444
7
					22	63	A	3LD2 562–1TC53	1 unit	0.863
					37	100	A		1 unit	2.000
								3LD2 7630TB..
								+1)	1 unit	0.102
							}	3LD9 280–0C
					45	125	A	3LD2 8630TB..	1 unit	2.000
								+1)	1 unit	0.102
							}	3LD9 280–0C

Main control and EMERGENCY-STOP switches

•With N or PE/ground terminals

•metric screwed glands

•Lockable in 0 position with max. 3 padlocks

•IP65 degree of protection at the front

3		–	7.5	16	A	3LD2 064–0TB..			1 unit	0.463
			9.5	25	A	3LD2 164–0TB..			1 unit	0.463
			11.5	32	A	3LD2 264–0TB..			1 unit	0.465
			22	63	A	3LD2 565–0TB..			1 unit	0.906
			37	100	A	3LD2 7660TB..			1 unit	1.890
			45	125	A				1 unit	1.890
						3LD2 8660TB..
	3 + N	–	7.5	16	A	3LD2 064–1TC..			1 unit	0.453
			9.5	25	A	3LD2 164–1TC..			1 unit	0.487
			11.5	32	A				1 unit	0.500
						3LD2 264–1TC53
3LD2 164-0TB53			22	63	A	3LD2 565–1TC53			1 unit	0.960
			37	100	A	3LD2 7660TB..			1 unit	1.890
						+1)
					}	3LD9 280–0C			1 unit	0.102
			45	125	A	3LD2 8660TB..			1 unit	1.890
						+1)
					}	3LD9 280–0C			1 unit	0.102
Actuator							>
black
							51
red/yellow (EMERGENCY-STOP)							53

1)4th contact as N-conductor to be ordered separately; see Accessories for base mounting and distribution board mounting.

7/8	Siemens LV 10 · 2004	* This quantity or a multiple thereof can be ordered.

SENTRIC Switch Disconnectors

SENTRIC LD Main Control and EMERGENCY STOP Switches from 16 A to 125 A

Molded-plastic enclosures

	Number and version of		Rated data			DT	Order No.	PS*	Weight
	contacts		at 50 Hz ... 60 Hz						per PU
			380 V ... 440 V						approx.
	Main	Auxiliary	P/	P/	Iu
	contacts	contacts	AC-3	AC-23A
			kW	kW	A				kg

Main control and EMERGENCY-STOP switches with rotary operating mechanism

•metric screwed glands

•With N or PE/ground terminals

•IP65 degree of protection

6	–	7.5	9.5	25	A	3LD2 165–3VB..	1 unit	0.880
		9.5	11.5	32	A	3LD2 265–3VB..	1 unit	0.878
		18.5	22.0	63	A	3LD2 566–3VB..	1 unit	2.100

3LD2 165-3VB53	7

Selector switch with knob mechanism, knob not lockable

•metric screwed glands

•With N or PE/ground terminals

•Black actuator

3	–	7.5	9.5	25	A	3LD2 165–7UB01	1 unit	0.888
		9.5	11.5	32	A	3LD2 265–7UB01	1 unit	0.888
		18.5	22.0	63	A	3LD2 566–7UB01	1 unit	2.100
		30.0	37.0	100	A	3LD2 766–7UB01	1 unit	2.330

3LD2 165-7UB01
Actuator	>
black
	51
red/yellow (EMERGENCY-STOP)	53

* This quantity or a multiple thereof can be ordered.	Siemens LV 10 · 2004	7/9

SENTRIC Switch Disconnectors

SENTRIC LD Main Control and EMERGENCY STOP Switches from 16 A to 125 A

Accessories

■ Selection and ordering data

DT

3LD2 0

PS*

Weight

DT

3LD2 1 and

PS*

Weight

per PU

3LD2 2

per PU

approx.

approx.

Order No.

kg

Order No.

kg

For front mounting

4th contact

–

}

3LD9 220–0B

1 unit

0.039

(N conductor)

for front mounting

leading switch-on,

delayed switch-off

3LD9 2.0-0B

3LD9 2.0-2B

N or PE/ground terminal

}

3LD9 200–2B

1 unit

0.030

}

3LD9 220–2B

1 unit

0.036

continuous

Auxiliary switch

for mounting on left and/or right

delayed switch-off,

leading switch-on

1 NO + 1 NC

}

3LD9 220–5B

1 unit

0.046

}

3LD9 220–5B

1 unit

0.046

3LD9 2.0-3B

3LD9 2.0-5B

1 NO

A

3LD9 220–3B

1 unit

0.029

A

3LD9 220–3B

1 unit

0.029

1 NC

A

3LD9 220–4B

1 unit

0.029

A

3LD9 220–4B

1 unit

0.029

Auxiliary switch

for mounting on left and/or right

leading switch-on

7

with gold-plated contacts

for SIMATIC request

A

3LD9 220–3B

1 unit

0.029

A

3LD9 220–3B

1 unit

0.029

Labelling plate

A

3LD9 286–1A

1 unit

0.005

A

3LD9 286–1A

1 unit

0.005

English/German

For front and base mounting

Rotary operating mechanism

lockable in 0 position

with max. 3 padlocks

For four-hole mounting

black

A

3LD9 224–1B

1 unit

0.072

A

3LD9 224–1B

1 unit

0.072

red/yellow

A

3LD9 224–3B

1 unit

0.075

A

3LD9 224–3B

1 unit

0.075

3LD9 286-1A

For center-hole mounting

A

3LD9 224–1D

1 unit

0.080

A

3LD9 224–1D

1 unit

0.080

3LD9 2.4-1A

black

red/yellow

A

3LD9 224–3D

1 unit

0.081

A

3LD9 224–3D

1 unit

0.081

Labelling plate

A

3LD9 286–1A

1 unit

0.005

A

3LD9 286–1A

1 unit

0.005

English/German

Terminal cover as

additional touch protection

Can be snapped onto top and

3LD9 2.1-0A

3LD9 2.1–-2A

bottom

1-pole (1 pack = 100 units)

A

3LD9 201–2A

1 unit

0.007

A

3LD9 221–2A

1 unit

0.004

3-pole (1 pack = 4 units)

–

A

3LD9 221–0A

1 unit

0.007

4-pole (1 pack = 4 units)

A

3LD9 201–1A

1 unit

0.007

–

For base mounting and for distribution board mounting

3LD9 2.0-0C

3LD9 2.0-2C

4th contact		–			}	3LD9 220–0C	1 unit	0.039
(N conductor)
for mounting on the rear
leading switch-on,
delayed switch-off
N or PE/ground terminal	}	3LD9 200–2C	1 unit	0.032	}	3LD9 220–2C	1 unit	0.037
continuous
Auxiliary switch
for mounting on the left
and/or right
delayed switch-on,
leading switch-off
1 NO + 1 NC	}		1 unit	0.046	}		1 unit	0.046
		3LD9 220–5C				3LD9 220–5C
1 NO	A	3LD9 220–3C	1 unit	0.029	A	3LD9 220–3C	1 unit	0.029
1 NC	A	3LD9 220–4C	1 unit	0.030	A	3LD9 220–4C	1 unit	0.030
Labelling plate	A	3LD9 286–1A	1 unit	0.005	A	3LD9 286–1A	1 unit	0.005
English/German

7/10	Siemens LV 10 · 2004	* This quantity or a multiple thereof can be ordered.

SENTRIC Switch Disconnectors

SENTRIC LD Main Control and EMERGENCY STOP Switches from 16 A to 125 A

Accessories

			DT	3LD2 5	PS*	Weight	DT	3LD2 7 and	PS*	Weight
						per PU		3LD2 8		per PU
						approx.				approx.
				Order No.				Order No.
For mounting on the front
		4th contact	}	3LD9 250–0B	1 unit	0.079	}	3LD9 280–0B	1 unit	0.101
		(N conductor)
		for front mounting
		leading switch-on,
		delayed switch-off
3LD9 2.0-0B	3LD9 2.0-2B	N or PE/ground terminal	}	3LD9 250–2B	1 unit	0.072	}	3LD9 280–2B	1 unit	0.092
		continuous
		Auxiliary switch
		for mounting on the left and/or
		right
		delayed switch-on,
		leading switch-off
		1 NO + 1 NC	A	3LD9 250–5B	1 unit	0.047	A	3LD9 280–5B	1 unit	0.047
3LD9 2.0-3B	3LD9 2.0-5B 1 NO		A	3LD9 250–3B	1 unit	0.029	A	3LD9 280–3B	1 unit	0.030
		1 NC	A		1 unit	0.028	A		1 unit	0.029
				3LD9 250–4B				3LD9 280–4B
		Auxiliary switch
		for mounting on left and/or right
		delayed switch-on,
		with gold-plated contacts
		for SIMATIC request	A	3LD9 220–3B	1 unit	0.029	A	3LD9 220–3B	1 unit	0.029	7
		Labelling plate	A	3LD9 286–1A	1 unit	0.005	A	3LD9 286–1A	1 unit	0.005
		English/German

For front and base mounting

3LD9 286-1A

3LD9 2.4-1A

3LD9 2.1-0A 3LD9 2.1-2A

Rotary operating mechanism lockable in 0 position

with max. 3 padlocks

For four-hole mounting
black	A	3LD9 284–1B	1 unit	0.154	A	3LD9 284–1B	1 unit	0.154
red/yellow	A	3LD9 284–3B	1 unit	0.152	A	3LD9 284–3B	1 unit	0.152
For center-hole mounting
black	A	3LD9 284–1D	1 unit	0.155		–
red/yellow	A	3LD9 284–3D	1 unit	0.155		–
Labelling plate	A	3LD9 286–1A	1 unit	0.005	A	3LD9 286–1A	1 unit	0.005
English/German
Terminal cover as
additional touch protection
For snapping on at top and
bottom
1-pole (1 pack = 100 units)	A	3LD9 251–2A	4 units	0.125	A	3LD9 281–2A	1 unit	0.006
3-pole (1 pack = 4 units)	A	3LD9 251–0A	1 unit	0.009		–
4-pole (1 pack = 4 units)		–				–

For base mounting and for distribution board mounting

3LD9 2.0-0C

3LD9 2.0-2C

4th contact	}	3LD9 250–0C	1 unit	0.080	}	3LD9 280–0C	1 unit	0.102
(N conductor)
for mounting on the rear
leading switch-on
delayed switch-off
N or PE/ground terminal	}	3LD9 250–2C	1 unit	0.073	}	3LD9 280–2C	1 unit	0.093
continuous
Auxiliary switch
for mounting on the left
and/or right
delayed switch-on,
leading switch-off
1 NO + 1 NC	A	3LD9 250–5C	1 unit	0.047	A	3LD9 280–5C	1 unit	0.047
1 NO	A		1 unit	0.030	A		1 unit	0.029
		3LD9 250–3C				3LD9 280–3C
1 NC	A	3LD9 250–4C	1 unit	0.029	A	3LD9 280–4C	1 unit	0.029
Labelling plate	A	3LD9 286–1A	1 unit	0.005	A	3LD9 286–1A	1 unit	0.005
English/German

* This quantity or a multiple thereof can be ordered.	Siemens LV 10 · 2004	7/11

SENTRIC Switch Disconnectors

SENTRIC K Switch Disconnectors from 63 A to 1000 A

General data

■ Technical specifications

		Standards		IEC 60947-1, IEC 60947-3, VDE 0660 Part 107
		Type		3KA50		3KA51		3KA52		3KA531)		3KA55		3KA571)		3KA58
		Rated uninterrupted current Iu	A	63		80		125		160		250		400		6303)
		Continuous thermal current Ith2)	A	63		80		125		160		250		400		6303)
		Rated insulation voltage Ui	V	690		690		1000		1000		1000		1000		1000
		Rated impulse withstand voltageUimp	kV	6		6		8		8		8		8		8
		Rated operating voltage Ue	V	690
		AC 50 Hz/60 Hz
		DC	V	440 (3 conducting paths series-connected),
				220 (2 conducting paths series-connected)
		Rated short-circuit making capacity
		with back-up fuses4)
		at AC 50 Hz/60 Hz 690 V	kA (peak value)	220		220		220		220		220		220		220
		Rated conditional short-circuit current with series-
		connected fuses4)
		at AC 50 Hz/60 Hz 690 V	kA (rms value)	100		100		100		100		80		80		50
		Max. rated current In of the fuses	A	63		80		160		160		400		400		630
		Permissible let-through current of the fuses	kA	8		10		17		17		305)		305)		405)
		Maximum permissible let-through I2t value	kA2s
				55		55		223		223		1000		1000		2600
		Permissible let-through current of a series-con-
7		nected circuit-breaker
		at AC 50 Hz/60 Hz 690 V	kA (peak value)	7		8		8		15		25		25		32
		Rated short-circuit making capacity
		without fuses
		at AC 50 Hz/60 Hz 690 V	kA (peak value)	7		7		7		9		20		25		35
		Switching capacity (infeed top or bottom)
		at AC 400 V	A (rms value)
		Breaking current Ic (p.f. = 0.35)		500		650		1000		1280		2000		3200		5040
		Rated operating current Ie at		63		80		125		160		250		400		6306)
		AC-21A, AC-22A, AC-23A	A
		Motor switching capacity at AC-23A	kW	30		40		65		80		132		200		350
		At AC 500 V	A (rms value)
		Breaking current Ic (p.f. = 0.35)		500		640		1000		1280		2000		3200		3200
		Rated operating current Ie at	A	63		80				160		250		400		630
		AC-21A, AC-22A
		AC-23A	A	63		80		125		160		250		400		4006)
		Motor switching capacity at AC-23A	kW	40		50		90		110		185		280		280
		at AC 690 V	A (rms value)
		Breaking current Ic (p.f. = 0.35)		500		500		1000		1280		2000		3200		3200
		Rated operating current Ie at	A	63		80		125		160		250		400		630
		AC-21A, AC-22A
		AC-23A	A	63		63		125		160		250		400		4006)
		Motor switching capacity at AC-23A	kW	50		50		110		150		220		375		375
		at DC 440 V (3 conducting paths connected in series)	A									10007)
		Breaking current Ic (L/R = 15 ms)		250		260		500		640				1600		1600
		Rated operating current Ie at DC-23A	A	63		63		125		160		2508)		400		400
		Rated short-time current (1 s current)	kA (rms value)	2.5		2.5		3.2		3.2		8		11		15
		Permissible load
		depending on the ambient temperature for open-type
		installation in switchboards (e.g. 8NA1) in switchgear
		cubicles or switchgear racks at
		35 °C	A	63		80		125		160		250		400		630
		40 °C	A	63		80		125		160		250		400		620
		45 °C	A	63		80		125		160		250		400		600
		50 °C	A	63		80		125		160		250		400		580
		55 °C	A
				63		80		125		160		250		400		560
		60 °C	A	63		80		125		160		250		400		550
		Permissible ambient temperature	°C	–25 ... +55		for operation,		–50 ... +80		for storage	3)

1)Technical specifications for CSA approval on request.

2)Configuring note: max. permissible operating temperature at connections 100 °C.

3)With 3KA58 for operation –25 °C ... +35 °C, 570 A at 55 °C.

4)Only for 3NA38, 3NA32 or 3ND18, 3ND12 fuses (105 kA/50 kA for others).

5)3ND1 switchgear protection fuses.

6)AC-23B.

7)At 440 V L/R = 4 ms, at 220 V L/R = 15 ms.

8)At 440 V DC-22A, at 220 V DC-23A.

7/12	Siemens LV 10 · 2004

SENTRIC Switch Disconnectors

SENTRIC K Switch Disconnectors from 63 A to 1000 A

General data

Standards

IEC 60947-1, IEC 60947-3, VDE 0660 Part 107

Type

3KA50

3KA51

3KA52

3KA531)

3KA55

3KA571)

3KA58

Mechanical endurance

operations

15000

15000

15000

15000

12000

12000

12000

Required operating torque

Nm

3

3

7.5

7.5

16

16

16

Degree of protection

IP00/IP20 (from operator side, with busbar and terminal covers)

Power loss of the switch at Ith

W

7

12

22

22

33

72

170

Main conductor connection

Busbar systems, max. dimensions (w × t)

mm × mm

25 × 9

25 × 9

45 × 10

45 × 10

40 × 12

40 × 12

40 × 15

Cable lug, max. conductor cross-section (stranded)

mm2

35

35

70

120

150

2 × 150

2 × 240

or

1 × 240

Tightening torque

Nm

6 ... 7.5

6 ... 7.5

7 ... 10

18 ... 22

35 ... 45

35 ... 45

35 ... 45

Terminal screws

M 6

M 6

M 6

M 8

M 10

M 10

M 10

PE/ground-conductor connection

Flat bars

mm × mm

–

–

–

–

20 × 2.5

20 × 2.5

20 × 2.5

Cable lug, max. conductor cross-section (stranded)

mm2

–

–

–

–

70

120

120

4th pole

Rated uninterrupted current Iu

A

–

–

–

125

400

400

400

Rated operating current Ie at AC-21A, AC 690 V

A

–

–

–

125

400

400

400

Main conductor connection

Flat bars

mm × mm

–

–

–

15 × 3

25 × 4

25 × 4

25 × 4

Cable lug max. conductor cross-section (stranded)

mm2

–

–

–

70

240

240

240

Auxiliary switch 1 NO + 1 NC (accessory)

7

Max. number to be plugged

1

1

2

2

2

2

2

Rated operating current Ie at AC 50 Hz/60 Hz

A

Ie/AC-12

10

A

Ie/AC-15 at Ue = 220 V/230 V

A

6

Ie/AC-15 at Ue = 380 V/400 V

A

4

Ie/AC-15 at Ue = 500 V

A

2.5

Ie/AC-15 at Ue = 690 V

21.2

Rated operating current Ie at DC

A

Ie/DC-13 at Ue =

24 V

A

10

Ie/DC-13 atUe =

48 V

A

4

Ie/DC-13 at Ue = 110 V

A

1.2

Ie/DC-13 at Ue = 220 V

A

0.4

Ie/DC-13 at Ue = 440 V

0.2

Connection

mm2

2 × (1 ... 2.5)

solid

flexible with end sleeve

mm2

2 × (0.5 ... 1.5)

Weight

Complete version

kg

1.324

1.322

2.560

2.560

5.400

6.401

Basic version

kg

1.040

1.039

2.200

2.200

5.360

5.963

1) Technical specifications for CSA approval on request.

Siemens LV 10 · 2004	7/13

SENTRIC Switch Disconnectors

SENTRIC K Switch Disconnectors from 63 A to 1000 A

Base mounting

■ Area of application
SENTRIC KA switch disconnectors are implemented as main	Main control switches and EMERGENCY-STOP switches are
control switches and EMERGENCY-STOP switches for normal	hand-operated switch disconnectors acc. to IEC 60947-3 and
switching duty and isolation of main circuits and auxiliary cir-	VDE 0660 Part 107 (EN 60947-3) and comply with the isolation
cuits. Another area of application is the switching of three-phase	conditions and the requirements of machine guideline
induction motors and other loads for maintenance and repair	EN 60204-1.
work.

■ Selection and ordering data

All switch disconnectors to the IP00 degree of protection

Conductor connecting screws are generally included in the scope of supply.

Rated

DT

Complete

PS*

Weight

DT

Basic switch

PS*

Weight

DT

8UC6 EMER-

PS*

Weight

uninter-

version with

per PU

version

per PU

GENCY-STOP

per PU

rupted

8UC6 door-cou-

ap-

without handle

ap-

door-coupling

ap-

current

pling rotary oper-

prox.

prox.

rotary operating

prox.

Iu

ating mechanism

mechanism (red

(black handle)

handle, yellow

indicator plate)

A

Order No.

Order No.

kg

Order No.

kg

7

3-pole for motor loads

63

B

3KA50 30–1EE01

1 unit

1.440

}

3KA50 30–1AE01

1 unit

0.946

}

8UC61 21–3BB10

1 unit

0.353

80

B

3KA51 30–1EE01

1 unit

1.400

}

3KA51 30–1AE01

1 unit

0.918

}

8UC61 21–3BB10

1 unit

0.353

125

B

3KA52 30–1EE01

1 unit

2.380

}

3KA52 30–1AE01

1 unit

1.880

}

8UC62 22–3BB20

1 unit

0.426

160

B

3KA53 30–1EE01

1 unit

2.420

}

3KA53 30–1AE01

1 unit

2.020

}

8UC62 22–3BB20

1 unit

0.426

250

B

1 unit

5.470

1 unit

4.510

1 unit

0.999

3KA55 30–1EE01

}

3KA55 30–1AE01

}

8UC63 23–3BB30

400

B

3KA57 30–1EE01

1 unit

5.550

}

3KA57 30–1AE01

1 unit

4.630

}

8UC63 23–3BB30

1 unit

0.999

3KA53 30–1AE01

630

B

3KA58 30–1EE01

1 unit

6.120

}

3KA58 30–1AE01

1 unit

5.150

}

8UC63 23–3BB30

1 unit

0.999

3-pole for power distribution

63

B

3KA50 30–1EE01

1 unit

1.440

}

3KA50 30–1AE01

1 unit

0.946

}

8UC61 21–3BB10

1 unit

0.353

80

B

3KA51 30–1EE01

1 unit

1.400

}

3KA51 30–1AE01

1 unit

0.918

}

8UC61 21–3BB10

1 unit

0.353

125

B

1 unit

2.380

}

1 unit

1.880

}

1 unit

0.426

3KA52 30–1EE01

3KA52 30–1AE01

8UC62 22–3BB20

160

B

3KA53 30–1EE01

1 unit

2.420

}

3KA53 30–1AE01

1 unit

2.020

}

8UC62 22–3BB20

1 unit

0.426

250

B

1 unit

5.470

1 unit

4.510

0.999

3KA55 30–1EE01

}

3KA55 30–1AE01

}

8UC63 23–3BB30

1 unit

400

B

3KA57 30–1EE01

1 unit

5.550

}

3KA57 30–1AE01

1 unit

4.630

}

8UC63 23–3BB30

1 unit

0.999

3KA53 30–1AE01

630

B

3KA58 30–1EE01

1 unit

6.120

}

3KA58 30–1AE01

1 unit

5.150

}

8UC63 23–3BB30

1 unit

0.999

4-pole1) for

power distribution

63

B

3KA50 40–1EE01

1 unit

2.490

B

3KA50 40–1AE01

1 unit

2.100

}

8UC62 22–3BB20

1 unit

0.426

80

B

3KA51 40–1EE01

1 unit

2.540

B

3KA51 40–1AE01

1 unit

2.110

}

8UC62 22–3BB20

1 unit

0.426

125

B

3KA52 40–1EE01

1 unit

2.490

B

3KA52 40–1AE01

1 unit

2.090

}

8UC62 22–3BB20

1 unit

0.426

160

B

3KA53 40–1EE01

1 unit

2.450

B

3KA53 40–1AE01

1 unit

2.240

}

8UC62 22–3BB20

1 unit

0.426

250

B

1 unit

6.030

C

1 unit

5.040

0.999

3KA55 40–1EE01

3KA55 40–1AE01

}

8UC63 23–3BB30

1 unit

400

B

3KA57 40–1EE01

1 unit

5.150

B

3KA57 40–1AE01

1 unit

5.190

}

8UC63 23–3BB30

1 unit

0.999

3KA53 40–1AE01

630

C

3KA58 40–1EE01

1 unit

6.590

B

3KA58 40–1AE01

1 unit

5.740

}

8UC63 23–3BB30

1 unit

0.999

1)The nominal values are reduced in the case of strong harmonics due to frequency converter operation.

7/14	Siemens LV 10 · 2004	* This quantity or a multiple thereof can be ordered.

				SENTRIC Switch Disconnectors
		SENTRIC K Switch Disconnectors from 63 A to 1000 A
					Molded-plastic enclosures
	■ Benefits			■ Area of application
	• Lockable with 3 padlocks				Our master and EMERCENCY-STOP switches provide absolute
	• Generous terminal compartment				safety, even during maintenance and repair work. All-round
	• IP65 degree of protection				safety for people and machines.
	• Maintenance-free				With their high degree of protection of IP65, they can even with-
	• Easy to install.				stand dust and water spray, providing unparalleled safety in the
					building and industrial installations as well as the food and
					chemical industry. Even with their enclosures open, they con-
					form to protection class 2. IP20 is the minimum degree of protec-
					tion.
	■ Functions

The concept and mechanical construction of these switches are designed for reliable function even under the harshest conditions. In emergencies, every second counts, and our switches allow immediate isolation.

Our enclosed master and EMERGENCY-STOP switches can be locked with up to three padlocks and are available in two ergonomically designed versions: from 16 A to 1000 A.

■ Selection and ordering data

Main	Auxiliary	P/AC-23 A	at	Iu	Conductor cross-section	DT	Order No.	PS*	Weight
contacts	contacts	at			main conductor/PEN				per PU		7
		380 ... 400 V	660/690 V						approx.
		kW	kW	A	mm2				kg

Main control switch complete with rotary operating mechanism, black1)

3		–	65	110	125	35/352)		C	8HP27 07	1 unit	5.240
			80	150	160	120/702)		C	8HP27 11	1 unit	8.030
			132	220	250	150/702)		C	8HP27 12	1 unit	12.200
			200	375	400	2	× 150 or 1 × 240/120	C	8HP27 17	1 unit	12.300
			350	375	630	2	× 240/120	C	8HP27 18	1 unit	13.000
8HP27..			315	315	8003)	2	× 240/240	C	8HP27 38	1 unit	14.200
	EMERGENCY-STOP switch complete with rotary operating mechanism, red/yellow1)
3		–	65	110	125	35/352)		C	8HP27 47	1 unit	5.210
			80	150	160	120/702)		C	8HP27 48	1 unit	7.990
			132	220	250	150/702)		C	8HP27 61	1 unit	12.300
			200	375	400	2	× 150 or 1 × 240/120	C	8HP27 62	1 unit	12.300
			350	375	630	2	× 240/120	C		1 unit	12.800
									8HP27 63
			315	315	8003)	2	× 240/240	C	8HP27 58	1 unit	14.300

1)With PE/ground/ N terminal.

2)For a 5th conductor another terminal of this type can be installed.

3)For ambient temperatures up to 35 °C.

* This quantity or a multiple thereof can be ordered.	Siemens LV 10 · 2004	7/15