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ABB ek550-40-11-110v50hz-120v60hz contactor
ABB EK550-40-11 industrial 4-pole contactor with 800 A AC-1 rating, 110 V 50 Hz / 120 V 60 Hz control coil and integrated auxiliary contacts for industrial power switching applications.
£2,338.95
Why Choose the ABB EK550-40-11 110 V 50 Hz / 120 V 60 Hz Contactor?
The ABB EK550-40-11 (Part Number: SK827041-AF) 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 reliable ABB EK contactor series, it delivers dependable switching performance for resistive and slightly inductive loads while providing long mechanical life and robust construction.
Fitted with a 110 V AC 50 Hz / 120 V AC 60 Hz control coil, the EK550-40-11 is designed for reliable operation in industrial control systems worldwide. Its block-type construction incorporates four normally open main contacts together with one normally open and one normally closed auxiliary contact, making it suitable for complex switching 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 electrical distribution systems, resistance heating applications, large industrial machinery and railway installations requiring dependable high-current switching.
Key Advantages
- Heavy-duty 4-pole industrial contactor for high-current applications.
- 800 A AC-1 switching capacity for demanding industrial loads.
- 110 V AC 50 Hz / 120 V AC 60 Hz control coil.
- Suitable for both AC and DC switching applications.
- Includes 1 NO and 1 NC auxiliary contact as standard.
- Designed for distribution, railway and industrial power 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).
- 110 V AC 50 Hz / 120 V AC 60 Hz control coil.
- Block-type construction for industrial applications.
- Main circuit flat bar terminals with screw and bolt connections.
Reliable High-Current Power Switching
The ABB EK550-40-11 is designed for reliable switching of large electrical loads in industrial power systems. Its heavy-duty contact design delivers dependable performance when controlling resistive heating equipment, distribution circuits and high-power industrial installations where operational reliability is critical.
Its robust construction, high switching capacity and compatibility with ABB auxiliary contact blocks make it an excellent choice for OEM machinery, electrical switchboards and industrial automation systems requiring long service life and dependable performance.
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 | 100–130 V | |
|---|---|---|
| Current | 550 A | |
| Power | 315 kW | |
| Voltage | 110 V | |
| Phase | Three Phase | |
| Poles | 4-pole | |
| Coil / Supply Voltage | 110 V, 120 V | |
| Device Type | Contactor | |
| Auxiliary Contacts | 1NO + 1NC | |
| Current AC-1 | 800 A | |
| Series | EK Contactors | |
| Part number | SK827041-AF | |
| Product type | Industrial power contactor | |
| Number of poles | 4 | |
| Main contacts | 4 NO | |
| Auxiliary contacts | 1 NO + 1 NC | |
| Rated operational current AC-1 | 800 A | |
| Rated operational current AC-3 | 550 A | |
| Motor power AC-3 at 415 V | 315 kW | |
| Rated operational voltage | 1000 V AC | |
| Rated insulation voltage | 1000 V | |
| Control voltage | 110 V 50 Hz / 120 V 60 Hz | |
| Frequency | 50 / 60 Hz | |
| Mounting type | Panel mounting | |
| Application type | Distribution and railway switching | |
| Maximum electrical switching frequency | 300 cycles per hour AC-3 | |
| Dimensions (H × W × D) | approx. 272 × 270 × 225.5 mm | |
| Weight | approx. 15.5 kg |
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 at 110 V AC 50 Hz or 120 V AC 60 Hz.
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, switchboards, railway systems and high-current electrical distribution equipment.
Trusted by Industrial Engineers Worldwide
ABB EK contactors are trusted worldwide for dependable high-current switching, long mechanical life and reliable operation across industrial power distribution, railway and heavy-duty electrical applications.
