4 Pole Modular Contactor – 125 A
18th Ed. Compliant
2-Year Warranty
UK Stock
Free Delivery £30+
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The WAC4P125 is the most powerful model in our modular contactor range — a 4 Pole 125 A contactor built for reliable, noise-free switching of EV hubs, renewable energy systems, industrial lighting, and HVAC control panels. Designed for long service life, it delivers precise operation even under heavy, sustained loads....
The WAC4P125 is the most powerful model in our modular contactor range — a 4 Pole 125 A contactor built for reliable, noise-free switching of EV hubs, renewable energy systems, industrial lighting, and HVAC control panels. Designed for long service life, it delivers precise operation even under heavy, sustained loads.
This 4-pole unit provides complete phase and neutral isolation when required, fitting neatly on a 35 mm DIN rail inside modular enclosures and consumer units. It meets BS EN 61095 and BS EN 60947-4-1 standards for control and switching devices, ensuring full compliance with BS 7671 (18th Edition).
Installer Tip: Use the 125 A contactor where multiple three-phase or high-power single-phase loads are controlled under one distribution system. Always confirm cable size, protective coordination, and ventilation clearance within the board.
- Silent coil design – suitable for industrial and commercial environments
- 4-pole switching for full phase and neutral isolation
- DIN-rail mountable for standard modular boards
- Rated for AC-7a (resistive) and AC-1 (inductive) loads
- Complies with BS EN 61095 and BS EN 60947-4-1
Available Variants (4 Pole Range):
| Part Code | Description | Rated Current (A) |
|---|---|---|
| WAC4P100 | 4 Pole Modular Contactor | 100 A |
| WAC4P125 | 4 Pole Modular Contactor | 125 A |
For lower current or single-phase systems, view our 2 Pole Modular Contactors or Rotary Isolators for supply isolation.
Where is the WAC4P125 typically used?
It’s ideal for high-current switching in EV charging systems, solar arrays, HVAC plant and other heavy-duty control applications up to 125 A.
Can it isolate all poles including neutral?
Yes – the 4-pole configuration provides full phase and neutral isolation for maintenance or inspection purposes.
Is it quiet in operation?
Yes – the coil design ensures silent switching, suitable for both industrial and commercial boards.
Can it be used with protection devices?
Yes – pair with RCBOs, RCDs and SPDs for complete compliance and safety.
Is it compliant with UK regulations?
Fully compliant with BS EN 61095 and BS EN 60947-4-1 under BS 7671 (18th Edition) wiring standards.
- Part Code: WAC4P125
- Type: Modular Contactor
- Configuration: 4 Pole
- Rated Current: 125 A
- Operational Voltage: 230 / 400 V AC 50 Hz
- Utilisation Category: AC-7a (resistive) / AC-1 (inductive)
- Protection: IP20 (BS EN 60529)
- Ambient Temperature: -25 °C to +40 °C
- Mounting: 35 mm DIN rail
- Recommended Torque: 2.0 Nm
- Compliance: BS EN 61095 / BS EN 60947-4-1
Mount on a 35 mm DIN rail within an IP-rated enclosure. Confirm the load current, cable capacity and coil voltage before energising the contactor.
- Rated 125 A – confirm circuit protection and cable sizing
- Ensure sufficient ventilation and clearance around the contactor
- Tighten terminals to 2 Nm torque
- Comply with BS 7671 and follow manufacturer installation guidance
