Product Description
WEG CWM40 IEC Contactor — 40A, 3-Pole, 30 HP @ 460V
The WEG CWM40 is a 40A, 3-pole IEC contactor rated at 30 HP at 460V three-phase (40A AC-3). The CWM40 is the authorized replacement for the obsolete GE CL45A310M series contactors, sharing identical dimensions and electrical ratings. Three-phase thermal overload relays mount directly to the load-side terminals in ranges from 0.28 to 50 Amps. The coil voltage and auxiliary contact configuration are selected by catalog number suffix — see the tables below.
Quick Specifications
- Current Rating: 40A AC-3
- HP Rating: 15 HP @ 230V / 30 HP @ 460V (three-phase)
- Single-Phase: 3 HP @ 115V / 5 HP @ 230V
- Poles: 3-pole, non-reversing
- Coil Voltage: Selected by catalog suffix — see table below
- Aux Contacts (base): 0 NO / 0 NC — selected by catalog suffix (see below)
- Terminal Type: Screw terminals
- Mounting: 35mm DIN rail or base mount
- Compatible Overload: RW27-1D3 series (0.28–50A, direct mount T1-T2-T3)
- Replaces: GE CL45A310M series (obsolete)
- Certifications: UL, CSA, IEC 60947-4-1, CE
CWM40 Catalog Number Guide — Coil and Aux Selection
The CWM40 catalog number encodes both the coil voltage and the auxiliary contact configuration. Unlike the smaller CWM9 through CWM32 contactors which include built-in auxiliary contacts as standard, the CWM40 base unit has no auxiliary contacts. Select the auxiliary configuration needed for your application using the suffix shown below.
| Part Number | Coil Voltage | Aux Included | GE Replacement |
|---|---|---|---|
| CWM40-10-30V04 | 24V AC, 50/60 Hz | 1 NO (BCXMF10) | GE CL45A310M1 |
| CWM40-00-30V18 | 110V AC (50Hz) / 120V AC (60Hz) | None (0 aux) | GE CL45A310MJ |
| CWM40-10-30V18 | 110V AC (50Hz) / 120V AC (60Hz) | 1 NO (BCXMF10) | — |
| CWM40-11-30V18 | 110V AC (50Hz) / 120V AC (60Hz) | 1 NO + 1 NC | — |
| CWM40-00-30V24 | 208–240V AC, 50/60 Hz | None (0 aux) | GE CL45A310M7 |
| CWM40-10-30V24 | 208–240V AC, 50/60 Hz | 1 NO (BCXMF10) | GE CL45A310MS |
| CWM40-10-30V37 | 240V AC (50Hz) / 277V AC (60Hz) | 1 NO (BCXMF10) | GE CL45A310M |
| CWM40-10-30V47 | 415V AC (50Hz) / 480V AC (60Hz) | 1 NO (BCXMF10) | GE CL45A310MU |
Not sure which variant to order? Call Kent Electrical Supply at 1-800-222-5129 or text your RFQ to 484-425-0652.
HP Ratings by Voltage
| Supply Voltage | HP Rating | Phase |
|---|---|---|
| 115V AC | 3 HP | Single-phase |
| 230V AC | 5 HP | Single-phase |
| 230V AC | 15 HP | Three-phase |
| 460V AC | 30 HP | Three-phase |
WEG CWM Series — Frame Overview
| Model | AC-3 | HP @ 460V | Base Aux | GE Replaces |
|---|---|---|---|---|
| CWM9 | 9A | 5 HP | 2 NO + 2 NC | GE CL00 |
| CWM18 | 18A | 10 HP | 2 NO + 2 NC | GE CL02 |
| CWM25 | 25A | 15 HP | 2 NO + 2 NC | GE CL03 |
| CWM32 | 32A | 20 HP | 2 NO + 2 NC | GE CL04 |
| CWM40 (this item) | 40A | 30 HP | 0 (select by suffix) | GE CL45 |
Product Features
- 30 HP at 460V — GE CL45 Replacement: The CWM40 is rated for 30 HP at 460V three-phase (40A AC-3), making it the WEG authorized replacement for the obsolete GE CL45A310M series. The CWM40 is identical in dimensions and electrical operation to the GE CL45. Multiple GE CL45 catalog number variants are covered — see the table above for the specific WEG replacement for each GE part number.
- Auxiliary Contacts Selected by Catalog Suffix: Unlike the smaller CWM9 through CWM32 contactors which include 2 NO + 2 NC built-in standard, the CWM40 base unit has no built-in auxiliary contacts. The auxiliary contact configuration is part of the catalog number: “00” = no aux, “10” = BCXMF10 (1 NO front-mount) included, “11” = BCXMF10 + BCXMF01 (1 NO + 1 NC) included. Additional BCXML11 side-mount blocks can be added after purchase.
- RW27-1D3 Overload Compatible — 0.28 to 50A: WEG RW27-1D3 series thermal overload relays mount directly to the CWM40 T1-T2-T3 load terminals, covering the full 0.28–50A current range. This provides complete motor starter protection without additional wiring or brackets.
- Coil Voltage Suffix System: The CWM coil voltage is encoded in the catalog number suffix: V04=24V AC, V18=110/120V AC, V24=208–240V AC, V37=240/277V AC, V47=415/480V AC. Select the suffix matching your panel’s control voltage.
- DIN Rail or Base Mount: Mounts on standard 35mm DIN rail or directly to a panel backplate. Screw terminals standard. Finger-proof design.
Stock Item – Order before 4:00 PM EST for Same-Day Shipping.
Frequently Asked Questions
What GE contactor does the CWM40 replace?
The WEG CWM40 is the authorized replacement for the obsolete GE CL45A310M series contactors. Specific GE-to-WEG mappings by coil voltage: GE CL45A310MJ (120V, no aux) → CWM40-00-30V18; GE CL45A310M7 (240V, no aux) → CWM40-00-30V24; GE CL45A310MS (240V, with aux) → CWM40-10-30V24; GE CL45A310M1 (24V, with aux) → CWM40-10-30V04; GE CL45A310MU (480V, with aux) → CWM40-10-30V47. The CWM40 is identical in dimensions and electrical operation to the GE CL45.
Does the CWM40 come with built-in auxiliary contacts?
The CWM40 base unit (suffix “00”) has no built-in auxiliary contacts. This differs from the smaller CWM9, CWM18, CWM25, and CWM32 contactors, which include 2 NO + 2 NC as standard. For the CWM40, auxiliary contacts are part of the catalog number: CWM40-10-30V18 includes a BCXMF10 (1 NO) front-mount block; CWM40-11-30V18 includes both BCXMF10 (1 NO) and BCXMF01 (1 NC). Additional BCXML11 side-mount blocks can be added to any CWM40 variant.
What does the catalog number CWM40-10-30V18 mean?
Breaking down the CWM40-10-30V18: CWM40 = 40A contactor; 10 = includes BCXMF10 (1 NO front-mount auxiliary contact); 30 = 3-pole; V18 = 110V AC (50Hz) / 120V AC (60Hz) coil. The CWM40-00-30V18 is the same contactor without any auxiliary contact included. The CWM40-11-30V18 includes both 1 NO and 1 NC front-mount auxiliary contacts.
What overload relay is compatible with the CWM40?
The CWM40 is compatible with WEG RW27-1D3 series thermal overload relays, which mount directly to the T1-T2-T3 load terminals. The RW27-1D3 covers the full range from 0.28A to 50A across multiple current adjustment ranges. Select the range that covers your motor’s nameplate full-load amperage. Call Kent Electrical Supply at 1-800-222-5129 for overload selection assistance.
Does the CWM40 qualify for same-day shipping?
Yes — stocked CWM40 variants ship same business day from Kent Electrical Supply’s warehouse in Emmaus, PA when ordered before 4:00 PM EST. Check individual variant pages for current stock. For RW27-1D3 overload relays, auxiliary contact blocks, or bulk orders, call us at 1-800-222-5129 or text your RFQ to 484-425-0652.
