SK827041-AM ek550-40-11-230-240v50hz ABB Contactor

Why Choose the ABB SK827041-AM EK550-40-11 Contactor?

The ABB SK827041-AM, also known as the EK550-40-11 230-240V 50Hz, is a heavy-duty 4-pole industrial power contactor designed for demanding AC and DC switching applications in industrial power distribution, railway systems and automation environments. As part of the ABB EK contactor series, it delivers reliable high-current switching performance for large electrical loads and industrial motors.

Engineered for durability and operational reliability, this ABB contactor supports high operational currents while maintaining dependable switching characteristics in challenging industrial environments. Its robust construction and integrated auxiliary contacts make it suitable for control panels, motor control centres and power switching systems requiring dependable long-term performance.

With a rated operational current of up to 800 A AC-1 and 550 A AC-3, the ABB SK827041-AM is ideal for heavy industrial applications involving motors, distribution systems, HVAC equipment and railway infrastructure. The integrated 230-240 V AC 50 Hz control coil enables seamless integration into industrial control systems and switchgear assemblies.

Key Advantages

• Heavy-duty 4-pole industrial contactor for high-current switching applications.
• 800 A AC-1 rating suitable for demanding industrial loads.
• 550 A AC-3 operational current for motor control applications.
• Integrated 1 NO + 1 NC auxiliary contacts for control circuits.
• Suitable for both AC and DC switching applications.
• Reliable ABB engineering designed for industrial and railway environments.

Key Features

• ABB EK550-40-11 contactor series.
• 4-pole configuration.
• 230-240 V AC 50 Hz control coil.
• 800 A AC-1 rated operational current.
• 550 A AC-3 rated operational current.
• 1000 V rated operational voltage.
• 1 NO + 1 NC auxiliary contacts included.
• Designed for industrial distribution and railway switching applications.
• IP20 protection degree at coil terminals.
• Panel mounting format for industrial switchgear assemblies.

Technical Specifications

• Manufacturer: ABB
• Series: EK Block Contactors
• Model: EK550-40-11
• Product code: SK827041-AM
• Product type: Industrial power contactor
• Number of poles: 4
• Main contacts: 4 NO
• Auxiliary contacts: 1 NO + 1 NC
• Control voltage: 230-240 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: 280 kW
• 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

Reliable High-Current Switching Performance

Industrial contactors such as the ABB EK550-40-11 are designed to switch high-current electrical loads safely and efficiently in industrial automation and power distribution systems. Their electromagnetic switching mechanism allows remote control of motors, heating systems, lighting installations and large industrial machinery.

The ABB EK series is engineered for applications requiring dependable switching performance under demanding operating conditions. With support for both AC and DC switching duties, the SK827041-AM provides flexibility for complex industrial control and railway infrastructure systems.

Typical Applications

• Industrial motor control systems.
• Power distribution and switchgear assemblies.
• Railway and transportation infrastructure.
• HVAC and large ventilation systems.
• Industrial automation equipment.
• Heavy-duty machinery and process control systems.

Trusted by Industrial Engineers Worldwide

ABB EK series contactors are trusted across industrial sectors for dependable high-current switching performance, robust construction and long operational life in demanding environments.