It remotely opens the device to which they are coupled in the event of voltage application. The opening is guaranteed for a voltage between 70% and 110% of the rated voltage, for both AC and DC, and is mounted on the left side of the S 800 circuit breakers.

Auxiliary contacts are secondary switching devices that operate in conjunction with primary switching equipment such as circuit breakers, relays, and contactors. These contacts are physically connected to the primary switching mechanism and are activated simultaneously.

What are they used for? Auxiliary contacts are used for various functions, e.g. self-holding, enabling/disabling, signalling, interlocking.

The switch equipped with electronic protectionrelease (also called current coil) is a switch that is opened, in case of failure, by an electromechanical actuator (opening solenoid) activated by an electronic device able to process a signal proportional to the current flowing through the power contacts.

Features:

• Abb series
• Nominal operating voltage 220/400 V
• Rated voltage (Ur) 220/400 V
• Frequency 50/60 Hz
• Power loss 45/148.1 W
• Product width 27 mm
• Product height 95 mm
• Length 27 mm
• Depth 82.5 mm
• Net weight 150 gr