Thermal Overload Selection Guide

Thermal Overload Selection Guide

The RW Class 10 Thermal Overload Relays, with their extended operational service lives, are designed for use with the CWC miniature and CWM standard contactors. These relays can be mounted directly under WEG contactors, assuring electrical and mechanical operation as an open across-the-line starter, from fractional power to 75 HP at 460V. Available in compact frame sizes. An extended operational service life is one of the main features you can find in RW overload relays. WEG's RW Thermal Overload Relays are designed for use with, and as perfect complement to, WEG contactors. Effectively, RW overload relays can be mounted directly under WEG contactors, assuring electrical and mechanical operation as an open across-the-line starter. Accessories are also available for separate mounting.

Features

• Phase-loss sensitivity
• Adjustable tripping current
• Tripping class 10
• Auxiliary contacts 1NO and 1NC
• Hand/Auto/Reset button
• Temperature compensation from -4°F to +140°F
• Standards and Approvals: IEC 60947, VDE 0660, cULus listed, CE Marked, Marine

thermal overload

3 Pole Thermal Overload Relays

Matching Contactors Setting Range (A) Max. Fuse (A) Model No. Dimensional Diagram Data Sheet
Min. Max.
CWC07...CWC016,
CWCA0
(Mini-contactors)
0.28 0.4 15 RW17-1D3-D004 PDF
DWG
thermal overload datasheet

Data Sheet
0.4 0.63 15 RW17-1D3-C063
0.56 0.8 15 RW17-1D3-D008
0.8 1.2 15 RW17-1D3-D012
1.2 1.8 15 RW17-1D3-D018
1.8 2.8 15 RW17-1D3-D028
2.8 4 15 RW17-1D3-U004
4 6.3 25 RW17-1D3-D063
5.6 8 30 RW17-1D3-U008
7 10 40 RW17-1D3-U010
8 12.5 50 RW17-1D3-D125
10 15 60 RW17-1D3-U015
11 17 60 RW17-1D3-U017
CWC025
(Mini-contactors)
15 23 90 RW17-2D3-U023 PDF
DWG
22 32 100 RW17-2D3-U032
CWM09...CWM40 0.28 0.4 15 RW27-1D3-D004 PDF
DWG
0.4 0.63 15 RW27-1D3-C063
0.56 0.8 15 RW27-1D3-D008
0.8 1.2 15 RW27-1D3-D012
1.2 1.8 15 RW27-1D3-D018
1.8 2.8 15 RW27-1D3-D028
2.8 4 15 RW27-1D3-U004
4 6.3 25 RW27-1D3-D063
5.6 8 30 RW27-1D3-U008
7 10 40 RW27-1D3-U010
8 12.5 50 RW27-1D3-D125
10 15 60 RW27-1D3-U015
11 17 60 RW27-1D3-U017
15 23 90 RW27-1D3-U023
22 32 90 RW27-1D3-U032
CWM32...CWM40 25 40 90 RW67-1D3-U040 PDF
DWG
32 50 125 RW67-1D3-U050
CWM50...CWM80 25 40 90 RW67-2D3-U040 PDF
DWG
32 50 125 RW67-2D3-U050
40 57 150 RW67-2D3-U057
50 63 150 RW67-2D3-U063
57 70 175 RW67-2D3-U070
63 80 175 RW67-2D3-U080
CWM95...CWM105 63 80 200 RW117-1D3-U080 PDF
DWG
75 97 225 RW117-1D3-U097
90 112 250 RW117-1D3-U112
CWM112...CWM150 75 97 225 RW117-2D3-U097 PDF
DWG
90 112 250 RW117-2D3-U112
CWM112...CWM150 100 150 300 RW317-1D3-U150 PDF
DWG
140 215 350 RW317-1D3-U215
200 310 500 RW317-1D3-U310
CWME400...CWME800 275 420 700 RW317-1D3-U420
400 600 1000 RW407-1D3-U600 PDF
DWG
560 840 1250 RW407-1D3-U840
CWB0...CW038 0.28 0.4 15 RW27-2D3-D004 PDF thermal overload datasheet

Data Sheet
0.4 0.63 15 RW27-2D3-C063
0.56 0.8 15 RW27-2D3-D008
0.8 1.2 15 RW27-2D3-D012
1.2 1.8 15 RW27-2D3-D018
1.8 2.8 15 RW27-2D3-D028
2.8 4 15 RW27-2D3-U004
4 6.3 25 RW27-2D3-D063
5.6 8 30 RW27-2D3-U008
7 10 40 RW27-2D3-U010
8 12.5 50 RW27-2D3-D125
10 15 60 RW27-2D3-U015
11 17 60 RW27-2D3-U017
15 23 90 RW27-2D3-U023
22 32 90 RW27-2D3-U032
32 40 90 RW27-2D3-U040

2 Pole Thermal Overload Relays (for Single Phase Applications)

Matching Contactors Setting Range (A) Max. Fuse (A) Model No. Dimensional Diagram Data Sheet
Min. Max.
CWM09...CWM40 0.28 0.4 15 RW27-1D2-D004 PDF
DWG
thermal overload datasheet

Data Sheet
0.4 0.63 15 RW27-1D2-C063
0.56 0.8 15 RW27-1D2-D008
0.8 1.2 15 RW27-1D2-D012
1.2 1.8 15 RW27-1D2-D018
1.8 2.8 15 RW27-1D2-D028
2.8 4 15 RW27-1D2-U004
4 6.3 25 RW27-1D2-D063
5.6 8 30 RW27-1D2-U008
7 10 40 RW27-1D2-U010
8 12.5 50 RW27-1D2-D125
10 15 60 RW27-1D2-U015
11 17 60 RW27-1D2-U017
15 23 90 RW27-1D2-U023
22 32 90 RW27-1D2-U032
CWM32...CWM40 25 40 90 RW67-1D2-U040 PDF
DWG
32 50 125 RW67-1D2-U050
CWM50...CWM80 25 40 90 RW67-2D2-U040 PDF
DWG
32 50 125 RW67-2D2-U050
40 57 150 RW67-2D2-U057
50 63 150 RW67-2D2-U063
57 70 175 RW67-2D2-U070
63 80 175 RW67-2D2-U080
CWB9...CWB38 0.28 0.4 15 RW27-2D2-D004 PDF thermal overload datasheet

Data Sheet
0.4 0.63 15 RW27-2D2-C063
0.56 0.8 15 RW27-2D2-D008
0.8 1.2 15 RW27-2D2-D012
1.2 1.8 15 RW27-2D2-D018
1.8 2.8 15 RW27-2D2-D028
2.8 4 15 RW27-2D2-U004
4 6.3 25 RW27-2D2-D063
5.6 8 30 RW27-2D2-U008
7 10 40 RW27-2D2-U010
8 12.5 50 RW27-2D2-D125
10 15 60 RW27-2D2-U015
11 17 60 RW27-2D2-U017
15 23 90 RW27-2D2-U023
22 32 90 RW27-2D2-U032
32 40 90 RW27-2D2-U040

Solid State Overload Relays

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.

Matching Contactors Current Range (A) Max. Fuse (gL/gG, A) Diagram Model No.
Min. Max.
CWB9...CWB38 0.4 2 16 thermal overload datasheet RWB40E-3-A4U002
1.6 8 32 RWB40E-3-A4U008
5 25 63 RWB40E-3-A4U025
8 40 125 RWB40E-3-A4U040
14 56 160 RWB112E-3-A4U056
28 112 250 RWB112E-3-A4U112
50 250 500 RWB420E-3-A4U250
85 420 710 RWB420E-3-A4U420
170 840 1250 RWB840E-3-A4U840