ABB SK827044-AF EK550-40-11 industrial 4-pole contactor with 110-120 V AC control coil, 800 A AC-1 operational current and 550 A AC-3 rating for industrial power switching applications.
£4,351.55
The ABB EK1000-40-11 (Part Number: SK827044-AF) is a heavy-duty 4-pole industrial contactor designed for switching extremely high-current AC and DC power circuits in demanding industrial, infrastructure and railway applications. As part of the proven ABB EK contactor series, it provides dependable switching performance, robust construction and exceptional mechanical durability for mission-critical power control systems.
Equipped with a 110 V AC 50 Hz / 120 V AC 60 Hz control coil, the EK1000-40-11 is ideal for industrial installations requiring reliable control of large electrical loads. Its block-type design incorporates 4 normally open main contacts together with 1 normally open and 1 normally closed auxiliary contact, providing flexible integration into industrial switching and monitoring circuits.
With a 1000 A AC-1 rated operational current, a maximum operational voltage of 1000 V AC and heavy-duty construction, the EK1000-40-11 is ideally suited to electrical distribution systems, resistance heating applications, railway installations and heavy industrial machinery where reliable high-current switching is essential.
The ABB EK1000-40-11 is engineered to provide dependable switching of very large electrical loads in demanding industrial environments. Its heavy-duty contacts and robust construction ensure reliable operation in power distribution systems, resistance heating equipment and industrial infrastructure where maximum reliability is essential.
Compatible with ABB auxiliary contact blocks and accessories, the EK series enables flexible integration into OEM machinery, electrical switchboards and industrial automation systems while maintaining long-term operational reliability.
| Power | 280 kW |
|---|---|
| Current | 800 A |
| Voltage | 120 V |
| Phase | Three Phase |
| IP Rating | IP20 |
| Series | EK Block Contactors |
| Product code | SK827044-AF |
| Product type | Industrial power contactor |
| Number of poles | 4P |
| Main contacts | 4 NO |
| Auxiliary contacts | 1 NO + 1 NC |
| Control voltage | 110-120 V AC 50/60 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 |
| Protection rating | IP20 |
| Mechanical durability | up to 5 million operations |
| 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 extremely high-current AC and DC power circuits in industrial, infrastructure and railway applications.
The control coil operates on a 110 V AC 50 Hz or 120 V AC 60 Hz supply.
The contactor is rated for 1000 A AC-1 switching 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, power distribution equipment, railway systems and heavy-duty electrical switchboards.
ABB EK contactors are trusted worldwide for dependable high-current switching, robust construction and long service life across industrial power distribution, railway infrastructure and demanding 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...