Undervoltage releases

An Undervoltage release is used to protect the load in the event of a voltage drop. If the voltage is under a certain voltage (value depending on the variant selected), the device operates opening the circuit.

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Main benefits

Automatic transfer switching
Compatibility with MCBs and RCDs​

Right mounted device suitable for MCBS, RCDs and Switch Disconnectors.

Combination with auxiliary and signaling contacts as well as with the Motor Operating Devices (MOD) and Auto-Reclosing units (AR)

bulb
LED indicator

To show if an undervoltage tripping occured

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Extended range

S3C-UA 230D the delayed version will trip the main protection device after waiting around 200 ms from the first voltage drop detection

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Optimization

One code to manage both DC and AV variants

Main features

  • Pass-through for pin busbars on top and bottom to enable installation with busbar
  • QR code printed on the front of the product to easily access product data
  • Wiring cross section: 1 wire 0,75...2,5mm², 2 wires max. 2 x 1,5mm²

Products and Documentation

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