WEG Electric RW-E Catalog Page

Information

- -

RWM - Solid State OL for CWM 40: 40A Contactor A4U002: 0.4 - 2.0A

RWB - Solid State OL for CWB 112: 112A Contactor A4U008: 1.6 - 8.0A

420: 420A Contactor A4U025: 5 - 25A

840: 840A Contactor A4U040: 8 - 40A

A4U056: 14 - 56A

A4U112: 28 - 112A

E: Electronic OL A4U250: 50 - 250A

A4U420: 85 - 420A

A4U840: 170 - 840A

OL Relay Type

Power Poles

3: 3-Phase Relay

Overload Current Settings

A4U040

Solid-State Overload Relay Catalog Number Sequence

Contactor Series

Contactor Frame

RWB

General

Overloads

Solid-State Overload Relays

Protection

Circuit

Disconnect

Switches

Protectors

Motor

Contactors Power

• 3-pole solid state overload relays with adjustable

Overloads Relays Pushbuttons

• Self-powered

• Wide adjustment range (5:1)

• Thermal memory

• Phase loss protection (less than 5 seconds)

• Phase unbalance protection (>40% between

Enclosed

Starters

• Temperature compensated (-20 °C up to +60 °C)

• Manual or automatic reset modes

•

• Separate mounting is possible with accessories

RW-E

The new RW_E Solid State Overload relays are developed with cutting edge technology according to the most demanding standards worldwide� With its wide current/AMP setting; the RW_E OL Relay can be used for protection of electric motors of different power ratings� The beneﬁt is versatility and ﬂexibility for manufacturers due to the possibility of standardization of control panels� This Solid State Overload Relay can be directly mounted on WEG Contactors (CWM and CWB lines) providing very reliable and ﬂexible motor starter units� The RW_E counts on two independent and highly reliable built in auxiliary contacts that assure the motor is switched off when a failure occurs�

Standard Features:

trip class: 10, 20 and 30

phases)

UL File No� E189202

Direct mounting on CWB9��38 and CWM9��105 contactors

1NO + 1NC built in auxiliary contacts

and Pilot

Lights

Terminal

Blocks

Correction

Factor

Appendix

Chart intended as reference only and not to create part numbers.

Data is subject to change without notice.

Overloads

Solid-State Overload Relays

Suitable for Great Variety of Applications

The solid-state overload relays RW_E are suitable to protect motors in a wide range of industrial applications including those where long starting time is required� This way, motors on low, medium or heavy duty applications can be properly protected just by selecting the proper trip class (10, 20 or 30 according to IEC 60947-4-1) in the DIP-switches�

Additionally, the microprocessed electronic circuits of RW_E are temperature compensated according to IEC 60947-4-1, which means that throughout the temperature range of -20 °C up to +60 °C, the tripping point is not affected and it performs consistently without undesirable tripping�

The RW_E also features thermal memory which assures that the heating and cooling effects of motors are modeled and proper protection is guaranteed even after downtime periods�

t(s)

10,8 00

10,000

5,000

2,000

1,000

500

200

100

Tripping time

1.0 5 1.5 2 3 4 5 6 7 8 9 10

Ie x Current setti ng

IEC 60947-4-1

Trip class 30

Trip class 20

Trip class 10

(A)

Trip class

1.05 x Ir 1.2 x Ir 1.5 x Ir 7.2 x Ir

10 - Tp <2h Tp <4min 4 <Tp ≤10s

20 - Tp <2h Tp <8min 6 <Tp ≤20s

30 - Tp <2h Tp <12min 9 <Tp ≤30s

Multiples of current setting

General

Information

Circuit

Protection

Switches

Disconnect

Protectors

Starters

Enclosed

Relays Overloads Contactors Motor

Data is subject to change without notice.

Trip class dip-switch

WEG Automation - Products and Solutions | 221

Lights

and Pilot

Pushbuttons

Blocks

Terminal

Power

Factor

Correction

Appendix

Information

General

Overloads

Solid-State Overload Relays

Protection

RW_E Solid-State Overload Relays from 0.4 up to 840 A

Circuit

Disconnect

Switches

Protectors

Motor

Contactors Power

Overloads Relays Pushbuttons

Note: Not to be used in si ngle -pha se application s.

For direct mounting

on contactors

CWB9...38 0.4...2

Current

range

Diagram

Max fuse

(gL/gG)

Catalog Number

16 RWB40E-3-A4U002 0.250

CWB9...38 1.6...8 32 RWB40E-3-A4U008

CWB9...38 5...25 63 RWB40E-3-A4U025

5L3

6T3

Tes t

Reset

CWB9...38 8...40 125 RWB40E-3-A4U040 0.250

CWM9...40 0.4...2 16 RWM40E-3-A4U002

CWM9...40 5..25 63 RWM40E-3-A4U025

CWM9...40 8...40 125 RWM40E-3-A4U040 0.918

2T1

1L1

3L2

4T2

CWM50...105 14...56 160 RWM112E-3-A4U056 0.918

CWM50...105 28...112 250 RWM112E-3-A4U112 0.918

Weight

0.250CWM9...40 1.6...8 32 RWM40E-3-A4U008

Starters

and Pilot

Lights

Blocks

Correction

Factor

Enclosed

For separate mounting or by connector links

Terminal

CWM112...500

CWM150...800 170....840 1,250 RWM840E-3-A4U840 4,150

Note: Not to be used in si ngle -pha se application s. Note: 1) RWM8 40E mo del allows t wo dif fer ent t ypes of conne ctio n to cont actor: a) By connecti ng the c ontactor ca bles to relay busba rs;

Appendix

b) By removing th e rela y busb ars and usi ng the Ø3 2 mm win dow for t he pas sage o f the contact or cab les.

Current

range

Diagram

50...250

Tes t

85...420 710 RWM420E-3-A4U420

2T1

1L1

3L2

4T2

5L3

6T3

Reset

Max fuse

(gL/gG)

Catalog Number

500 RWM420E-3-A4U250

Weight

2,520

Appendix

Data is subject to change without notice.

Overloads

Accessories

Mounting Kit

Image For use with relays Description Catalog Number

RWM40E

RWB40E BF27D-2D

Enables the overload relay to be mounted directly to a panel via screws or 35 mm DIN rail

RWM112E BF112 0.230

Connector Links for Direct Mounting of Overload Relay on Contactor

Image

For use with

relays

RWM112E CWM112/150 GA117D 0.135

RWM420E

For use with contactors Catalog Number

CWM150 GA317-1D 0.250

CWM180 GA317-2D 0.270

CWM250/300 GA317-3D 0.630

CWM400 GA317-10D 0.500

BF27D

Solid-State Overload Relays

Weight

0.050

Weight

General

Information

Circuit

Protection

Switches

Disconnect

Protectors

Phase Barriers

Image

For use with

relays

RWM420E

Reset Pushbutton with Shaft

Image

For use with

relays

RW_E

Description Catalog Number

Contains 1 set of plastic insulators (top / bottom) and ﬁxing screws to be used where the overload relay power terminals external dimension exceed the busbar external dimension

Description Catalog Number

Blue Flush pushbutton Engraved Reset - with shaft. Length: max. 250 mm and min. 22.5 mm

IBRW317 0.044

Weight

CSW-BHF437 0.032

Weight

Starters

Enclosed

Relays Overloads Contactors Motor

Lights

and Pilot

Pushbuttons

Blocks

Terminal

Power

Factor

Correction

Appendix

Data is subject to change without notice.

Appendix

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