ABB EH 370 SK 827 004-DD

ABB EH 370 Heavy-Duty 3-Pole Contactor

Description

The ABB EH 370 is a high-performance 3-pole contactor designed for controlling motors and other highly inductive loads. With a thermal current rating of 550A (AC-1) and a capacity of 200kW at 400V (AC-3), this device is built for demanding industrial environments. This unit includes a 220-255V AC coil and a CAL16-11B auxiliary contact block. Please note: This is a used item and has one loose/detached rubber mounting foot, but is otherwise in good condition.

Specifications

• Manufacturer: ABB
• Model: EH 370
• Poles: 3-Pole
• Rated Insulation Voltage (Ui): 1000V
• Conventional Thermal Current (Ith, AC-1): 550A
• AC-3 Rating at 400V: 200kW
• Coil Voltage: 220-230V 50Hz / 230-255V 60Hz
• Auxiliary Contacts: 1 NO, 1 NC (CAL16-11B)

Label Info

• Main Part Number: SK 827 004-DD
• Coil Part Number: SK 827 100-EM
• Auxiliary Block: SK 829 002-B / CAL16-11B
• Standard: IEC 60947-4-1

Application

Ideal for motor starting, isolation, and distribution applications in industries such as manufacturing, processing, and large-scale HVAC systems.

Country of Origin

Made in Sweden.

CO2 Impact

Opting for this pre-owned contactor saves an estimated 95 kg of CO2 emissions compared to a new one, contributing to a more sustainable industrial operation.

Availability

This is an obsolete item, offering a crucial replacement for existing systems. Order now from spareparts2day for expert support and fast delivery.

FAQ

What is the difference between AC-1 and AC-3 ratings for this contactor?

AC-1 rating (550A) is for non-inductive or slightly inductive loads, like resistance heaters. The AC-3 rating (e.g., 200kW at 400V) is for squirrel-cage motors and involves switching the motor during its run-up phase, which is a more demanding task. Always use the AC-3 rating for motor applications.

Can the coil (SK 827 100-EM) be replaced with a different voltage coil?

Yes, the EH series contactors were designed with replaceable coils. You can exchange the existing 220-255V AC coil with another compatible ABB coil of a different voltage (e.g., 24V DC, 110V AC) if your control circuit requires it.

What are the correct tightening torque specifications for the main power terminals?

As indicated on the side label, the recommended tightening torque for the main terminals (using the EHTK 550N kit) is 375 lb.in. (approximately 42.4 Nm). Using the correct torque is critical to prevent overheating and ensure a secure connection.

Last Update: Friday, March 13, 2026

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