Danfoss CTI 25M, CTI 45MB Data sheet

Data sheet

Circuit Breakers

Type CTI 25M, CTI 45MB

Circuit breakers for short circuit and overload
protection of motor applications cover the
current range 0.1 – 45 A (AC-3 rating).
The product range is split in two product sizes.
The smallest size is CTI 25M. It consists of 14 code
numbers and covers the current range 0.1– 32 A.
The bigger size is called CTI 45MB. It consists of
two code numbers and covers the current range
from 23 – 45 A.

The program is very exible and includes add­on accessories such as auxiliary contacts, alarm
contacts, voltage and under voltage trips,
connection terminals and bus bars.

Features • Indication for magnetic trip (short circuiting)

• Overload protection and short circuit
protection of motor installations

• Test function for thermal trip

• Manual reset function

• Indication for thermal trip

• Single phase protection (Dierential trip)

• Temperature compensated (-20 – 60 °C)

• Tripping class 10

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IC.PD.C00.A9.02 | 1

Data sheet | Circuit Breakers CTI 25M, CTI 45MB

Approvals

Ordering

Approval

institute

UK Germany France

Lloyds

Register

Product type EN 60947 Canada USA

CTI 25M

CTI 45MB

CBA-

CBA S-

CBT-

CBT S-

VTU-

BDH

RDH

BBT-

BBC-

 Approved
 Approvals applied for

     

     

     

     

     

     

     

     

     

     

     

of

Shipping

Germanischer

Circuit Breakers / Manual Motor Starters CTI 25M, CTI 45MB

Type

380 - 415 V

[kW]

0.02 0.1 – 0.16 2.1 047B3140

0.06 0.16 – 0.25 3.3 047B3141

0.09 0.25 – 0.40 5.2 047B3142

0.18 0.4 – 0.63 8.2 047B3143

0.25 0.63 – 1.0 13 047B3144

0.55 1.0 – 1.6 21 047B3145

0.75 1.6 – 2.5 33 047B3146

AC-3 Load

CTI 25M

1.5 2.5 – 4.0 52 047B3147

2.2 4.0 – 6.3 82 047B3148

4.0 6.3 – 10 130 047B3149

7.5 10 – 16 208 047B3150
10 14.5 – 20 260 047B3151
11 18 – 25 325 047B3152
13 24 – 29 406 047B3103
15 27 – 32 448 047B3102

CTI 45MB

15 23 – 32 416 047B3164
22 32 – 45 585 047B3165

Note!

For motors with full load currents higher or equal with 19 A, CTI 25M 047B3152 (18 - 25 A) must be selected

Range

Motor Starter

[A]

Electromagnetic

Trip current

[A]

Lloyd

Bureau
Veritas

Code no.

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IC.PD.C00.A9.02 | 2

Data sheet | Circuit Breakers CTI 25M, CTI 45MB

Ordering

CBA -

CBA S­CBT S-

VTU

Anti tamper
shield

Auxiliary contacts and Alarm contacts to circuit breakers CTI 25M, CTI 45MB

Type Description Feature Mounting Code no.
CBA-10 Auxiliary contact 1 NC (11-12) Front 1) 047B3198
CBA-11 Auxiliary contact 1 NO+1 NC (13-14, 21-22) Front 1) 047B3200
CBA-20 Auxiliary contact 2 NO (13-14, 23-24) Front 1) 047B3201
CBA S-11 Auxiliary contact 1 NO+1 NC (33-34, 41-42) Side 1) 3) 047B3203

CBT S-TM2 Trip alarm + Magnetic alarm contact

1

) Max. one per Circuit breaker

2

) Can also be mounted together with CBA-S

3

 Can also be mounted onto an alarm contact CBT S-

4

 Always direct onto the circuit breaker

Trip alarm: Make, 55-56,
Magnetic alarm: Break, 65-66

Side 2) 4 047B3211

Under voltage and voltage trips to circuit breakers CTI 25M, CTI 45MB

Type Remarks Code no.
VTU Under voltage trip, 24 V/50 Hz-28 V/60 Hz, D1-D2 047B3214
VTU Under voltage trip, 220-230 V/50 Hz, D1-D2 047B3217
VTU Under voltage trip, 380-400 V/50 Hz, 440-460 V/60 Hz, D1-D2 047B3220

Accessories for circuit breakers CTI 25M, CTI 45MB

Type Remarks Code no.
BDH Black door handle for mounting in panel doors IP66 047B3249
RDH Red/yellow door handle for mounting in panel doors IP66 047B3250

Door handle extension rod for CBI 100-BDH 047B3136

BDH
RDH

Door handle
extension

BBT 25

BBC 25

Connection terminal blocks and bus bars for circuit breakers CTI 25M, CTI 45MB

Type Remarks

BBT 52 Connection terminal block for CTI 25M – – 047B3259
BBC 25 45-2 Bus bar for CTI 25M 45 2 047B3261
BBC 25 45-3 Bus bar for CTI 25M 45 3 047B3262
BBC 25 45-5 Bus bar for CTI 25M 45 4 047B3263
BBC 25 45-5 Bus bar for CTI 25M 45 5 047B3264
BBC 25 54-2 Bus bar for CTI 25M 54 2 047B3265
BBC 25 54-3 Bus bar for CTI 25M 54 3 047B3266
BBC 25 54-4 Bus bar for CTI 25M 54 4 047B3267
BBC 25 54-5 Bus bar for CTI 25M 54 5 047B3268

Spacing

[mm]

Number of connections Code No.

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IC.PD.C00.A9.02 | 3

Data sheet | Circuit Breakers CTI 25M, CTI 45MB

Enclosures for the circuit breaker CTI 25M is made
of deform-resistant grey ABS thermoplast.

The enclosures are available with black rotary
handle on a grey background or with red rotary
handle on a yellow background.

Circuit breaker type CTI 25M for overload
protection of electric motors from 0.1 – 25 A full
load current can be mounted into the enclosure.

Features

Ordering

 Status indication ON-OFF-TRIP
 For maintenance purposes locking facility

up to 3 padlocks
 Sealed cover
 High protection degree IP65
 Cable entries top and bottom M20/25
 Mounted with DIN-rail
 Mounted with earth terminal
 Possible installation of auxiliary and trip

contacts
 Space for under voltage and voltage trips

Used as:

 Manual motor starter
 Mains isolator
 Maintenance switch
 Emergency switch together with under

voltage trip

Used on:

 Small workshops for drilling machines
 Concrete mixer
 Air handling units
 Water booster systems
 Fan systems
 Transport belt

Enclosures for CTI 25M

Type Application Rotary handle Cable entries Code no.
BMG Motor starter / Main switch Black/grey 4 M20/25 047B3284
BMY Motor starter / Emergency switch Red/grey 4 M20/25 047B3285

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Data sheet | Circuit Breakers CTI 25M, CTI 45MB

Contact symbols for CTI
and accessories

Circuit breakers

Auxiliary contacts
for front mounting

Auxiliary contacts
for side mounting

Alarm contacts
for side mounting

CTI 25M, CTI 45MB

CBA S-11 CBA S-20 CBA S-02

CBA-01CBA-10

CBA-11 CBA-20

CBA-02

Under voltage trip

Voltage trip

CBT S-2TM CBT S-1T-1M CBT S-1M-1T

VTU-

VT-

CBT S-TM2

CBT S-1M-1M

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IC.PD.C00.A9.02 | 5

Data sheet | Circuit Breakers CTI 25M, CTI 45MB

General specications

Parameters CTI 25M, CTI 45MB

Isolation voltage
IEC, SEV, VDE 0660
UL, CSA

Impulse voltage
U

/pollution degree 6 kV/3

imp

Rated frequency range 50/60 Hz

Ambient temperature:
Storage
Operation
Temperature compensation

Utilization category

Overload protection Motors
Trip class 10
Magnetic trip 13 × (max. value of setting range)
Phase failure protection Yes
Mechanical operations 100000
Electrical operations 30000
Switching frequency Max 25 operations/hour
Resistance to climate change according to IEC 68-2
Site altitude 2000 m N.N
Protection class IP20
Resistance to vibration IEC 68-2
Resistance to shock 30 g, 11 ms
Life span 0.1 – 25 A
Total power loss 6 – 8 W

690 V
600 V

-40 – 80 °C

-25 – 60 °C

-20 – 60 °C
As circuit breaker IEC 947-2

As motor starter IEC 947-4-1

Mounting direction

CTI 25M, CTI 45MB

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IC.PD.C00.A9.02 | 6

Data sheet | Circuit Breakers CTI 25M, CTI 45MB

Max. motor load

Accessories for circuit
breakers CTI 25M

Circuit breaker for overload and short circuit protection of motor applications CTI 25M, CTI 45MB

Setting

Type

[A]

0.1 – 0.16 – – – 0.02 – – – –

0.16 – 0.25

0.25 – 0.4 – – – 0.09 – – – –

0.40 – 0.63

0.63 – 1.0 – 0.12 – 0.25 0.25 0.37 0.37 0.55

1.0 – 1.6 0.18 0.25 0.37 0.55 0.55 0.75 0.75 1.1

1.6 – 2.5 – 0.37 – 0.75 – 1.1 – 1.8

CTI 25M

CTI 45MB 32 – 45 11 13 18.5 22 22 30 30 40

2.5 – 4.0 0.55 0.75 1.1 1.5 1.5 2.2 2.2 3

4.0 – 6.3 1.1 1.5 – 2.2 2.5 3 – 4

6.3 – 10 – 2.2 3 4 4 6.3 5.5 7.5
10 – 16 3 4 5.5 7.5 7.5 10 11 13

14.5 – 20 4 5.5 7.5 10 – 11 15 17
18 – 25 – 5.5 – 11 – 15 18.5 22
24 – 29 – 7.5 – 13 – 18.5 – 25
27 – 32 – 7.5 – 15 – 20 – 25

220 – 240 V 380 – 415 V 500 V 690 V

AC-2 AC-3 AC-2 AC-3 AC-2 AC-3 AC-2 AC-3

– – – 0.06 – – – –

0.06 0.09 0.12 0.18 – 0.18 – 0.25

Motor operating voltage – Rated output in [kW]

Auxiliary and trip contacts CBA-, CBA S-, CBT S-

Type Description

Auxiliary

CBA-

CBA S-

CBT S-

contacts
for front
mounting

Auxiliary
contacts
for side
mounting

Trip
contacts
for side
mounting

I

th

60 °C

[A]

24 V

[A]

40 °C

[A]

5 4 4 3 1.5 – – 2 0.5 0.25 –

10 6 6 5 3 2 0.7 2 0.5 0.25 0.15

10 6 6 5 3 2 0.7 2 0.5 0.25 0.15

AC-15 DC-13

120 V

220 –

380 –

690 V

240 V

415 V

[A]

[A]

[A]

[A]

24 V

[A]

120 V

[A]

240 V

[A]

415 V

[A]

© Danfoss | DCS (az) | 2018.02

Bus bar terminal and Bus bar connection

Max. load

Type Description

BBT 25 Bus bar terminal for CTI 25M 63
BBC 25 Bus bar connection for CTI 25M 63

Ith at 60 °C

[A]

Voltage and under voltage trip VT-, VTU-

Type Description Operating voltage range Coil consumption

VT-

VTU-

Voltage trip
21 V/50 Hz-415 V/50 H z
24 V/60 Hz-480 V/60 Hz (max 300V UL)
Endurance 100%

Under voltage trip
21 V/50 Hz-415 V/50 H z
24 V/60 Hz-480 V/60 Hz (max 300V UL)
Endurance 100%

Pull-in

0.85-1.1xU
Drop-out

0.7-0.35x U
Pull-in

0.85-1.1xU
Drop-out

0.7-0.35x U

Pull-in:

s

s

s

s

8.5 VA, 6 W
Hold:
3 VA, 1.2 W

Pull-in:

8.5 VA, 6 W
Hold:
3 VA, 1.2 W

IC.PD.C00.A9.02 | 7

Data sheet | Circuit Breakers CTI 25M, CTI 45MB

Accessories for circuit
breaker

Terminals

Recommended

Type Comments

CTI 25M 1 conductor or

2 conductors

CBA- 1 conductor or

2 conductors

CBA S- 1 conductor or

2 conductors

CBT S- 1 conductor or

2 conductors

VTU- 1 conductor or

2 conductors

CBA- 1 conductor or

2 conductors

BBT 25 1 conductor Pozi 2/ blade 3 6 – 25 6 – 25 4 – 16 3
BBT 25 2 conductors Pozi 2/ blade 3 6 – 16 6 – 16 4 – 10 3

screwdriver size

Pozi 2/ blade 3 1.5 – 6 1 – 6 1 – 4 1 – 2.5

Pozi 2/ blade 3 0.75 – 2.5 0.75 – 2.5 0.5 – 2.5 1.5

Pozi 2/ blade 3 0.75 – 2.5 0.75 – 2.5 0.5 – 2.5 1.5

Pozi 2/ blade 3 0.75 – 2.5 0.75 – 2.5 0.5 – 2.5 1.5

Pozi 2/ blade 3 0.75 – 2.5 0.75 – 2.5 0.5 – 2.5 1.5

Pozi 2/ blade 3 0.75 – 2.5 0.75 – 2.5 0.5 – 2.5 1.5

Solid wire

[mm2]

Stranded

wire

[mm2]

Stranded
wire with

sleeve
[mm2]

Tightening

torque

[Nm]

© Danfoss | DCS (az) | 2018.02

IC.PD.C00.A9.02 | 8

Data sheet | Circuit Breakers CTI 25M, CTI 45MB

Short circuit protection Short circuit coordination is the connection

between the specications of the protection
devices, such as fuses, circuit breakers, MCCB and
its ability to resist short circuit.

Short circuit coordination type 1
Test demand

O-t-CO
O = Breaking a short circuiting
CO = Making and breaking a short
circuiting
t = Dened pause (3 min)

No damage to equipment or personal injury
may occur in the event of short circuit. However,
contactors and thermal overload relays are not
required to remain functional after short circuit.
It is typically the maximum short circuit breaking
capacity Icu in use when a plant is dimensioned
according to coordination type 1.

Terms Remarks

Prospective short circuit current
(Icc)

Rated ultimate short circuit breaking capacity
(Icu)

Rated service short circuit breaking capacity
(Ics)

Ir-current

Iq current

gI fuse

gL fuse Indicates full short circuit protection of wires.

gG fuse

T fuse Description of an English standard fuse.
BS 88 British Standard for smeltesikringer

Short circuit coordination type 2
Test demand

O-t-CO-t-CO
O = Breaking a short circuiting
CO = Making and breaking a short
circuiting
t = Dened pause (3 min)

No damage to equipment or personal injury may
occur in the event of short circuit. However, light
contact welding is permissible, provided that
contacts can be separated without deformation,
using a screwdriver for example. Contactors and
thermal overload relays must remain completely
functional after short circuit.
It is typical the short circuit breaking capacity
during operation Ics in use when a plant is
dimensioned according to coordination type 2.

The prospective short circuit current is the current that
ows during a bolt short circuiting without any short
circuit protection device mounted

The ultimate short circuit breaking capacity is the
maximum short circuit current specied by the
manufacturer that a circuit breaker can handle under
circumstances specied in IEC 947-2 and in EN 60947-2

The rated service short circuit breaking capacity is
the maximum short circuit current specied by the
manufacturer that a circuit breaker can handle under
circumstances specied in IEC 947-2 and in EN 60947-2

The Ir-current is a short circuit test current. The size of
the Ir- current is determined by the nominal current of
the product. (See below)

Iq –current is the maximum prospective short circuiting
current stated by the manufacturer and often at the
value 50 kA.

Indicates full short circuit protection at voltages 250V,
400V, 500V and 690V

Indicates full short circuit protection at general
applications. (Will replace gI- and gL –fuses)

© Danfoss | DCS (az) | 2018.02

Contactor size Prospective short circuit test current

Rated current at AC-3 load Ir in [kA]

0 < Ie < 16 1

16 < Ie < 63 3

63 < Ie < 125 5
125 < Ie < 315 10
315 < Ie < 630 18

630 < Ie < 1000 30

IC.PD.C00.A9.02 | 9

Data sheet | Circuit Breakers CTI 25M, CTI 45MB

Back-up fuses type gG, gL
and Icc > I

cu

Circuit breaker for motor
applications

Type

CTI 25M

CTI 45MB 32 – 45 – 125 125 125 100

– = No fuse required

Type

CTI 25M

CTI 45MB 32 – 45 585 100 100 65 50 50 50 50 50 10 6

Setting

[A]

0.1 – 0.16 – – – – –

0.16 – 0.25 – – – – –

0.25 – 0.4 – – – – –

0.4 – 0.63 – – – – –

0.63 – 1.0 – – – – –

1.0 – 1.6 – – – – 16

1.6 – 2.5 – – – – 20

2.5 – 4.0 – – – – 35

4.0 – 6.3 – – – – 50

6.3 – 10 – – 63 80 50
10 – 16 – 80 63 80 63

14.5 – 20 100 100 80 80 63
18 – 25 100 100 80 80 63
24 – 29 125 125 100 100 80
27 – 32 125 125 100 100 80

Thermal

setting

range

[A]

0.1 – 0.16 2.1 100 100 100 100 100 100 100 100 100 100

0.16 –

0.25

0.25 –

0.40

0.40 –

0.63

0.63 – 1.0 13 100 100 100 100 100 100 100 100 100 100

1.0 – 1.6 21 100 100 100 100 100 100 100 100 8 8

1.6 – 2.5 33 100 100 100 100 100 100 100 100 8 8

2.5 – 4.0 52 100 100 100 100 100 100 100 100 8 8

4.0 – 6.3 82 100 100 100 100 100 100 100 100 4 4

6.3 – 10 130 100 100 100 100 50 50 50 50 4 4
10 – 16 208 100 100 65 50 10 6 10 6 3 3

14.5 – 20 260 65 50 50 15 6 6 6 6 3 3
18 – 25 325 65 50 15 15 6 6 6 6 3 3
24 – 29 406 50 25 15 15 6 6 6 6 3 3
27 – 32 448 50 25 15 15 6 6 6 6 3 3

220-240 V

[A]

Magnetic

Trip

current

[A]

3.3 100 100 100 100 100 100 100 100 100 100

5.2 100 100 100 100 100 100 100 100 100 100

8.2 100 100 100 100 100 100 100 100 100 100

220 – 240 V 380 – 415 V 440 – 460 V 500 V 690 V

I

cuIcsIcuIcsIcuIcsIcuIcs IcuIcs

380-415 V

[A]

440-460 V

[A]

Breaking capacity in kA

500 V

[A]

690 V

[A]

© Danfoss | DCS (az) | 2018.02

IC.PD.C00.A9.02 | 10

Data sheet | Circuit Breakers CTI 25M, CTI 45MB

UL/CSA specications

Terminals

Auxiliary contacts and alarm contacts CBA-, CBA S-, CBT-, CBT S-

Max back up

Type Description AC DC

CBA- Auxiliary contacts for front mounting B300 Q300 0A
CBA S- Auxiliary contacts for side mounting B600 Q600 0A
CBT S- Alarm contacts for side mounting B600 Q600 0A

Stranded

wire

with sleeve

AWG

Type Comments

CTI 25M

1 conductor or

2 conductors

Recommended

screwdriver

size

Solid

wire

AWG

Stranded

wire

AWG

Pozi 2/ blade 3 No. 16-8 No. 16-8 No. 16-12 8.9-22

CTI 45MB 1 conductor Pozi 2/ blade 4 No. 14-6 No. 14-6 No. 14-8 13-31
CTI 45MB 2 conductors Pozi 2/ blade 4 No. 14-4 No. 14-4 No. 14-6 13-31

CBA-

CBA S-

CBT S-

VTU-

CBA-

1 conductor or

2 conductors

1 conductor or

2 conductors

1 conductor or

2 conductors

1 conductor or

2 conductors

1 conductor or

2 conductors

Pozi 2/ blade 3 No. 14-6 No. 14-6 No. 14-8 13.3

Pozi 2/ blade 3 No. 18-14 No. 18-14 No. 18-14 13.3

Pozi 2/ blade 3 No. 18-14 No. 18-14 No. 18-14 13.3

Pozi 2/ blade 3 No. 18-14 No. 18-14 No. 18-14 13.3

Pozi 2/ blade 3 No. 18-14 No. 18-14 No. 18-14 13.3

BBT 25 1 conductor Pozi 2/ blade 3 No. 18-14 No. 18-14 No. 18-14 27
BBT 25 2 conductors Pozi 2/ blade 3 No. 14-6 No. 14-6 No. 14-8 27

fuse

type gG, gL

Tightening

torque

[Ib-in]

UL/CSA specications

Circuit breaker for overload- and short circuit protection of motor applications

Range

Type

[A]

1-phase run 3-phase run

115 V 230 V 230 V 460 V 575 V 480 V 600 V

0.1 – 0.16 – – – – – 65 47

0.16 – 0.25 – – – – – 65 47

0.25 – 0.4 – – – – – 65 47

0.4 – 0.63 – – – – – 65 47

0.63 – 1.0 – – – –

1

⁄10 –

1

⁄6

1

⁄3

1

⁄2 1½ 3 5 65 30

CTI 25M

1.0 – 1.6 –

1.6 – 2.5 –

2.5 – 4.0

4.0 – 6.3

6.3 – 10
10 – 16

1

⁄8

1

⁄4

1

⁄2 1 3 5 7 ½ 65 30

3

⁄4 2 5 10 10 30 30

14.5 – 20 1 3 5 – 15 10 10
18 – 25 1 ½ – 7 ½ 15 20 10 5
24 – 29 – – 10 20 25 10 –
27 – 32 – – 10 25 30 10 –

CTI 45MB 32 – 45 3 7½ 15 30 40 65 18

Motor rating in hp

Prospective

short circuit current

[kA]

1

3

1

⁄2 1 1 ½ 65 30

3

⁄4 2 3 65 25

⁄4

⁄2 65 47

3

⁄4 65 47

© Danfoss | DCS (az) | 2018.02

IC.PD.C00.A9.02 | 11

Data sheet | Circuit Breakers CTI 25M, CTI 45MB

Let-through curves for
circuit breakers CTI 25M

Max let-through current for
circuit breakers CTI 25M

A: Max let-through current ID [kA]
B: The prospective short circuit
current at 415 V I

Max let-through energy for circuit
breakers CTI 25M

cc

[kA]

© Danfoss | DCS (az) | 2018.02

A: Max let-through energy I2t [kA2s]
B: The prospective short circuit
current at 415 V I

cc

[kA]

IC.PD.C00.A9.02 | 12

Data sheet | Circuit Breakers CTI 25M, CTI 45MB

Let-through curves for
circuit breakers
CTI 45MB

Max let-through current for
circuit breakers CTI 45MB

A: Max let-through current ID [kA]
B: The prospective short circuit
current at 415 V I

Max let-through energy for circuit
breakers CTI 45MB

cc

[kA]

© Danfoss | DCS (az) | 2018.02

A: Max let-through current I2t [kA2s]
B: The prospective short circuit
current at 415 V I

cc

[kA]

IC.PD.C00.A9.02 | 13

Data sheet | Circuit Breakers CTI 25M, CTI 45MB

Overload protection of
motors

Tripping characteristic for
CTI 25M

A: Trip time in sec.
B: Times the adjustable current I

ef

1) Thermal trip

The adjustable bimetals ensure a reliable

overload protection of motors. The curve
is mean value curve at 20°C ambient
temperature from cold state. It also ensures
protection of motors by phase failure
(dierential trip).

All three bimetals must be connected in series

by overload protection of 1-phase motors.

2) Magnetic trip

The electromagnetic trips react at a xed

response current. The size of the xed
response current correspond typically to 13
times of the maximum range of the circuit
breakers CTI 25M, CTI 45MB.

© Danfoss | DCS (az) | 2018.02

IC.PD.C00.A9.02 | 14

Data sheet | Circuit Breakers CTI 25M, CTI 45MB

Coordination without fuse

Circuit breakers and contactors

Max. prospective short circuit-current Iq = 50 kA
Voltage 380-415 V/50 Hz
Overload protection CTI 25M, CTI 45MB
Short-circuit protection CTI 25M, CTI 45MB
Short-circuit coordination T1 and T2

Coordination type 1 Coordination type 2

Contactor

Ir 1) and Iq = 50 kA Ir 1) and I

CTI 25M CTI 45MB CTI 25M CTI 45MB

= 50 kA

q

Max. CTI range [A]

CI 5-2, CI 5, CI 5-9, CI 5-12 25 45 2.5 2.5
CI 6, CI 9 25 45 2.5 2.5
CI 12, CI 15 25 45 4.0 4.0
CI 16 25 45 6.3 20
CI 20, CI 25 25 45 6.3 25
CI 30 25 45 10 25
CI 32 – 45 – 32
CI 37, CI 45, CI 50 – 90 – 45
CI 61, CI 73, CI 86 – – – 90

1

) Short-circuit current according to EN 60947-4 (see page 16)

Circuit breakers, contactors and thermal overload relays

Max. prospective short-circuit current Iq = 50 kA
Voltage 380-415 V/50 Hz
Overload protection Thermal overload relay type TI 9C, TI 16C, TI 25C, TI 30C, TI 80
Short-circuit protection CTI 25M, CTI 45MB
Short-circuit coordination T1

Contactor

Thermal overload relay

range

Coordination type T1

Test current I

r

Max. CTI range

[A]

CI 5-9, CI 6, CI 9 0.13 – 0.20 45
CI 5-9, CI 6, CI 9 0.19 – 0.29 45
CI 5-9, CI 6, CI 9 0.27 – 0.42 45
CI 5-9, CI 6, CI 9 0.4 – 0.62 45
CI 5-9, CI 6, CI 9 0.6 – 0.92 45
CI 5-9, CI 6, CI 9 0.85 – 1.3 45
CI 5-9, CI 6, CI 9 1.2 – 1.9 63
CI 5-9, CI 6, CI 9 1.8 – 2.8 63
CI 5-9, CI 6, CI 9 2.7 – 4.2 63
CI 5-9, CI 6, CI 9 4 – 6.2 63
CI 9 6 – 9.2 63
CI 12, CI 15 8 – 12 63
CI 15, CI 16 11 – 16 90
CI 16, CI 20 15 – 20 90
CI 25 19 – 25 90
CI 30 24 – 32 90
CI 32 22 – 32 90
CI 37, CI 45 30 – 45 90
CI 50, CI 61 42 – 63 90
CI 73 60 – 80 90
CI 86 74 – 85 90

1

) Short-circuit current according to EN 60947-4 (see page 16)

1

) and I

[A]

= 50 kA

q

© Danfoss | DCS (az) | 2018.02

IC.PD.C00.A9.02 | 15

Data sheet | Circuit Breakers CTI 25M, CTI 45MB

Coordination with fuse Contactors

Max. prospective short-circuit current Iq = 50 kA
Voltage 380-415 V/50 Hz
Overload/short-circuit protection gG and T (BS88)
Short-circuit coordination T1 and T2

Contactor

CI 5-2, CI 5-9, CI 5-12 25 32 16 20 16 20
CI 6, CI 9, CI 12, CI 15 50 63 25 32 25 32
CI 16 80 80 25 32 25 32
CI 20, CI 25 80 08 25 32 25 32
CI 30 80 80 35 40 25 32
CI 32 125 125 50 63 35 40
CI 37, CI 45, CI 50 125 125 80 80 80 80
CI 61, CI 73, CI 86 250 – – – 160 –
CI 141 315 – – – 250 –
CI 180 355 – – – 315 –
CI 210 EI, CI 250 EI 500 – – – 400 –

1

) Short-circuit current according to EN 60947-4 (see page 16)

Short-circuit coordination

T1 T2

Test current

Ir 1) and Iq = 50 kA Ir 1) and Iq = 10 kA Ir 1) and I

gG
[A]

[A]

T

gG
[A]

[A]

T

gG
[A]

= 50 kA

q

T

[A]

Contactors and thermal overload relays

Max. prospective short-circuit current Iq= 50 kA
Voltage 380-415 V/50 Hz
Overload/short-circuit protection gG and T (BS88)
Short-circuit coordination T1 and T2

Thermal overload

relay

Contactor

Ir 1) and Iq = 50 kA Ir 1) and Iq = 10 kA Ir 1) and I

gG

[A]

[A]

CI 5-9, CI 6, CI 9 0.13 – 0.20 25 32 2 2 – –
CI 5-9, CI 6, CI 9 0.19 – 0.29 25 32 2 2 – 2
CI 5-9, CI 6, CI 9 0.27 – 0.42 25 32 2 2 2 2
CI 5-9, CI 6, CI 9 0.4 – 0.62 25 32 4 4 4 4
CI 5-9, CI 6, CI 9 0.6 – 0.92 25 32 4 6 4 6
CI 5-9, CI 6, CI 9 0.85 – 1.3 25 32 4 6 4 6
CI 5-9, CI 6, CI 9 1.2 – 1.9 25 32 6 10 6 10
CI 5-9, CI 6, CI 9 1.8 – 2.8 25 32 6 10 6 10
CI 5-9, CI 6, CI 9 2.7 – 4.2 25 32 16 20 16 20
CI 5-9, CI 6, CI 9 4 – 6.2 35 40 20 25 20 25
CI 5-9, CI 6, CI 9 6 – 9.2 50 50 20 25 20 25
CI 12 8 – 12 63 63 25 32 25 32
CI 15, CI 16 11– 16 80 80 25 32 25 32
CI 20, CI 25 15 – 20 80 80 35 40 35 40
CI 25 19 – 25 80 80 35 40 35 40
CI 30 24 – 32 80 80 35 40 35 40
CI 32 16 – 23 125 125 50 63 35 40
CI 32 22 – 32 125 125 63 63 35 40
CI 37, CI 45 30 – 45 125 125 80 80 63 63
CI 50 42 – 63 125 125 80 80 63 63
CI 61 42 – 63 160 – – – 80 –
CI 73 60 – 80 160 – – – 125 –
CI 86 74 – 85 160 – – – 160 –
CI 98 20 – 180 250 – – – 200 –
CI 141 20 – 180 315 – – – 250 –
CI 180 20 – 180 355 – – – 315 –
CI 210 EI, CI 250 EI 160 – 630 500 – – – 400 –
CI 300 EI, CI 420 El 160 – 630 630 – – – 500 –

1

) Short-circuit current according to EN 60947-4 (see page 16)

Short-circuit coordination

T1 T2

Test current

T

[A]

gG
[A]

T

[A]

gG
[A]

q

= 50 kA

T

[A]

© Danfoss | DCS (az) | 2018.02

IC.PD.C00.A9.02 | 16

Data sheet | Circuit Breakers CTI 25M, CTI 45MB

Dimensions

Circuit breakers CTI 25M

Circuit breakers CTI 45MB

© Danfoss | DCS (az) | 2018.02

IC.PD.C00.A9.02 | 17

Dimensions Enclosures BMG and BMY

for circuit breakers CTI 25M

© Danfoss | DCS (az) | 2018.02

IC.PD.C00.A9.02 | 18