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SK827041-AR ek550-40-11-400-415v50hz ABB Contactor
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.
£2,338.95
Why Choose the ABB EK550-40-11 400-415 V 50 Hz Contactor?
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.
Key Advantages
- Heavy-duty 4-pole industrial contactor for demanding applications.
- 800 A AC-1 switching capacity for high-current industrial loads.
- 400-415 V AC 50 Hz control coil.
- Suitable for AC and DC switching applications.
- Supplied with 1 NO and 1 NC auxiliary contact.
- Designed for industrial power distribution and railway systems.
Key Features
- ABB EK contactor series.
- 4 normally open (4 NO) main contacts.
- 1 normally open + 1 normally closed auxiliary contact.
- 800 A rated operational current (AC-1).
- 550 A rated operational current (AC-3).
- 400-415 V AC 50 Hz control coil.
- Heavy-duty block construction.
- Main circuit bar terminals with screw and bolt connections.
Reliable High-Current Power 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.
Typical Applications
- Industrial power distribution systems.
- Railway electrical installations.
- Resistance heating equipment.
- Large industrial switchboards.
- Heavy-duty machinery.
- OEM electrical control panels.
Technical Specifications
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| Coil Voltage Range | 380–440 V | |
|---|---|---|
| Current | 550 A | |
| Power | 280 kW | |
| Voltage | 415 V | |
| Phase | Three Phase | |
| IP Rating | IP20 | |
| Poles | 4-pole | |
| Coil / Supply Voltage | 400 V AC, 415 V AC | |
| Device Type | Contactor | |
| Auxiliary Contacts | 1NO + 1NC | |
| Coil Type | AC | |
| Current AC-1 | 800 A | |
| 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 |
Frequently Asked Questions
What is the ABB EK550-40-11 used for?
It is designed for switching high-current AC and DC power circuits in industrial, distribution and railway applications.
What control voltage does this contactor require?
The control coil operates on a 400-415 V AC 50 Hz supply.
What is the current rating of the EK550-40-11?
The contactor is rated for 800 A AC-1 and 550 A AC-3 applications.
How many contacts does this model include?
It features 4 normally open main contacts together with 1 normally open and 1 normally closed auxiliary contact.
Where is the EK550-40-11 typically installed?
It is commonly installed in industrial control panels, electrical switchboards, railway systems and high-current power distribution equipment.
Trusted by Industrial Engineers Worldwide
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.
