ABB SK827041-AR EK550-40-11 industrial 4-pole contactor with 400-415 V AC control coil, 800 A AC-1 operational current and 550 A AC-3 rating for industrial power switching applications.
£3,598.38
The ABB EK550-40-11 (Part Number: SK827041-AR) is a heavy-duty 4-pole industrial contactor designed for switching high-current AC and DC power circuits in demanding industrial, distribution and railway applications. As part of the proven ABB EK contactor series, it delivers dependable switching performance, long mechanical life and robust construction for critical power control systems.
Equipped with a 400-415 V AC 50 Hz control coil, the EK550-40-11 is ideal for industrial installations operating on standard three-phase control supplies. Its block-type design incorporates 4 normally open main contacts together with 1 normally open and 1 normally closed auxiliary contact, providing flexibility for switching and monitoring applications.
With an impressive 800 A AC-1 rating, 550 A AC-3 rating and a maximum main circuit voltage of 1000 V AC, this contactor is ideally suited to industrial power distribution, heavy-duty machinery, railway systems and resistance heating applications requiring dependable high-current switching.
The ABB EK550-40-11 is engineered for dependable switching of high-current electrical loads in industrial installations. Its heavy-duty contacts and robust construction provide reliable operation in electrical distribution systems, heating equipment and large industrial machinery where continuous performance is essential.
Compatible with ABB auxiliary contact blocks and accessories, the EK series offers flexibility for OEM machinery, industrial control panels and electrical switchboards while maintaining excellent operational reliability in demanding environments.
| Power | 280 kW |
|---|---|
| Current | 800 A |
| Voltage | 415 V |
| Phase | Three Phase |
| IP Rating | IP20 |
| Series | EK Block Contactors |
| Product code | SK827041-AR |
| Product type | Industrial power contactor |
| Number of poles | 4P |
| Main contacts | 4 NO |
| Auxiliary contacts | 1 NO + 1 NC |
| Control voltage | 400-415 V AC 50 Hz |
| Rated operational voltage | 1000 V |
| Rated operational current AC-1 | 800 A |
| Rated operational current AC-3 | 550 A |
| Rated operational power AC-3 at 400 V | approx. 280 kW |
| Rated impulse withstand voltage | 8 kV |
| Mechanical durability | 5 million operations |
| Protection rating | IP20 |
| Mounting type | Panel mounting |
| Dimensions (H × W × D) | approx. 272 × 270 × 225.5 mm |
| Weight | approx. 15.5 kg |
| Standards | IEC 60947 |
It is designed for switching high-current AC and DC power circuits in industrial, distribution and railway applications.
The control coil operates on a 400-415 V AC 50 Hz supply.
The contactor is rated for 800 A AC-1 and 550 A AC-3 applications.
It features 4 normally open main contacts together with 1 normally open and 1 normally closed auxiliary contact.
It is commonly installed in industrial control panels, electrical switchboards, railway systems and high-current power distribution equipment.
ABB EK contactors are trusted worldwide for dependable high-current switching, robust construction and long service life across industrial power distribution, railway infrastructure and heavy-duty electrical applications.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...