Changeover Switch (COS)

UNO MCB Changeover Switch is a manual operated changeover switch which finds its application in switching load between two power supplies. UNO MCB Changeover switch finds wide applications in industries as well as in domestic area specially in Individual Bungalow(IB) for use in low voltage distribution circuits. Changeover switches are used to shift from one source of supply to another source and vice versa. The changeover switch comes in 2P and 4P versions, for single and three phase application respectively. It has three positions ( I-O-II) with centre-off. They are switch disconnectors with independent manual operation, capable of making, carrying and breaking currents under normal circuit conditions.

Changeover Switch


  • Double break contact mechanism
  • Single frame for complete range
  • Three position indication (I-O-II) with Red and Green Indicators
  • Centre position OFF.
  • Maximum terminal capacity of 35sq. mm
  • Easy snap on DIN Rail mounting


Changeover Switch
Reference Standard IS/IEC 60947-3
Poles DP & FP
Current Rating (In) 25A, 40A & 63A
Rated Voltage (Ue) 240/ 415V~ AC
Rated Frequency 50Hz
Rated Insulation voltage 660V
Rated impulse voltage 4kV
Dielectric Strength 2.5kV
Utilisation Category AC22A
Protection IP20
Ambient temperature -5 to 50 ºC
Mounting Clip on Din rail (35mm * 7.5mm) Vertical