Modular Contactors – DIN Rail Mount
Modular DIN rail contactors for remote switching of lighting, heating, EV chargers, and load circuits. Compact, low-noise, and available in multiple current ratings for residential, commercial, and light industrial installs – all UK stocked with next-day delivery.
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Designed to mount easily on a DIN rail, these modular contactors integrate seamlessly into consumer unit enclosures and three-phase boards. They provide reliable switching without overheating, making them ideal for time-clocked loads, heating systems, or automation projects. All units are BS EN compliant, 18th Edition ready, and shipped direct from our UK warehouse.
- DIN rail compatible – easy integration into boards
- Low-noise operation – suitable for domestic and commercial installs
- Multiple current ratings – from lighting to heavy-load circuits
- Compact design – saves space in consumer units
Need upstream switching or isolation? See our Main Switches & Isolators. For returns, check our returns policy.
2 Pole Modular Contactor – 20 A
£6.58
The WAC2P20 is a compact 2 Pole 20 A modular contactor built for reliable, silent switching in residential, commercial, and light-industrial circuits. Designed for lighting control, HVAC, EV chargers, and automation systems, it integrates cleanly into modular enclosures and consumer units. It provides quiet operation,...
4 Pole Modular Contactor – 20 A
£10.84
The WAC4P20 is a compact 4 Pole 20 A modular contactor offering silent, reliable switching for lighting, HVAC, EV and automation applications. It’s DIN-rail mountable and suitable for both single and three-phase control circuits where noise-free operation is essential. Designed to fit modular enclosures and...
4 Pole Modular Contactor – 125 A
£51.65
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...
4 Pole Modular Contactor – 100 A
£34.85
The WAC4P100 is a robust 4 Pole 100 A modular contactor designed for EV charging hubs, solar systems, HVAC plant and heavy-duty automation circuits. It delivers reliable, noise-free switching across single- and three-phase loads, fitting standard 35 mm DIN rails inside modular enclosures and consumer...
4 Pole Modular Contactor – 63 A
£14.99
The WAC4P63 is a heavy-duty 4 Pole 63 A modular contactor designed for high-load control in EV chargers, HVAC systems, industrial lighting banks and automation circuits. Mounts directly on a 35 mm DIN rail inside modular enclosures or consumer units where quiet, reliable switching is...
What Is a Modular Contactor?
A modular contactor is an electrically controlled switch that allows you to remotely control circuits, often via timers, sensors, or BMS (Building Management Systems). Unlike standard relays, they are designed to handle higher currents safely, making them suitable for both residential and commercial use.
Applications
- Lighting control – switch multiple lighting circuits from a single point. Example: 2-Pole Modular Contactor.
- Heating systems – control underfloor heating, boilers, or immersion heaters.
- EV charging – manage load balancing and timed charging setups. See also EV Consumer Units.
- Automation – integrate into smart home or commercial building controls.
Buying Considerations
- Current rating – select based on load (e.g. 20A, 25A, 40A)
- Poles – single, double, or four-pole depending on circuit design
- Noise level – “silent” or low-noise models are preferred for residential installs
- DIN rail fit – ensure compatibility with your consumer unit or board
FAQs on Modular Contactors
What’s the difference between a relay and a contactor?
A contactor is designed for higher current switching and safer long-term operation, while relays are typically for low-current control circuits.
Do modular contactors comply with the 18th Edition?
Yes – all modular contactors in our range are BS EN certified and compliant with UK wiring regulations.
Can I use a modular contactor for EV charging?
Yes – modular contactors are often used for load management and scheduled charging in EV installs.
Why Buy From Power & Data UK?
We supply UK-tested modular contactors with manufacturer warranties and next-day delivery on qualifying orders. All products are stocked in our UK warehouse and backed by a 2-year warranty. Easy returns are covered under our returns policy.