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
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 |
 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 | 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 |
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 | 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 |  |
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 | ||