Why Choose the ABB EK550-40-11 220-230 V 50 Hz / 240 V 60 Hz Contactor?
The ABB EK550-40-11 (Part Number: SK827041-AL) is a heavy-duty 4-pole industrial contactor engineered for switching high-current AC and DC power circuits in demanding industrial, distribution and railway applications. As part of the dependable ABB EK contactor series, it delivers reliable switching performance for resistive and slightly inductive loads while offering exceptional durability and long service life.
Equipped with a 220-230 V AC 50 Hz / 240 V AC 60 Hz control coil, the EK550-40-11 is designed for reliable operation across industrial power systems worldwide. Its robust block-type construction incorporates four normally open main contacts together with one normally open and one normally closed auxiliary contact, making it suitable for demanding control and monitoring applications.
With an 800 A AC-1 rating, 550 A AC-3 rating and a main circuit voltage of up to 1000 V AC, this contactor is ideal for industrial power distribution, resistance heating equipment, railway systems and heavy-duty machinery requiring dependable high-current switching.
Key Advantages
- Heavy-duty 4-pole industrial contactor for demanding switching applications.
- 800 A AC-1 switching capacity for high-current industrial loads.
- 220-230 V AC 50 Hz / 240 V AC 60 Hz control coil.
- Suitable for AC and DC power switching.
- Supplied with 1 NO and 1 NC auxiliary contact.
- Designed for industrial, distribution and railway applications.
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).
- 220-230 V AC 50 Hz / 240 V AC 60 Hz control coil.
- Block-type industrial construction.
- Main circuit bar terminals with bolt connections.
Reliable High-Current Power Switching
The ABB EK550-40-11 is designed to provide dependable switching of large electrical loads in demanding industrial installations. Its heavy-duty contacts and robust construction ensure reliable operation in power distribution systems, heating equipment and heavy industrial machinery where continuous performance is essential.
The contactor is compatible with ABB auxiliary contact blocks and accessories, making it easy to integrate into modern electrical switchboards, OEM equipment and industrial automation systems while providing long-term operational reliability.
Typical Applications
- Industrial power distribution systems.
- Railway electrical installations.
- Resistance heating equipment.
- Large industrial switchboards.
- Heavy-duty machinery.
- OEM electrical control panels.
