Rotary Auxiliary Knife Switches

Product Description

Rotary auxiliary knife switches popularly known as wafer switches due to their modular & companct design are very versatile for switching a.s. as well as d.c. resistive & iductive loads. They are used as auxiliary contacts in equipments such as MV & HV - Vacuum Circuit Breakers, Gas Circuit Breakers, Isolators & Various equipments, where it is linked mechanically to the equipment and follows the position as per the linkage. In most cases a straight motion of main contacts is converted into rotational through links & levers to operate the switches.

Features:

•  Knife type of contacting making it suitable for switching d.c. loads.
•  Self cleaning of contacts is done during the operation.
•  Modular design to achieve any number of poles with minimum components.
•  Brass inserts used in threads to endure more than required torque while mounting.
•  Superior insulating material ensures electrical & mechanical stability.

Specification:

•  Conventional free AIr Thermal Current Rating (lth): *0Amp.
•  Operational Voltage: **0 volts d.c.
•  Operational Current: 2.0 Amp.
•  Utilisation Category: DC**3
•  Switching capability: Inductive loads with L/R ratio (time constant) of *0mS.
•  Dielectric Strength: 2.0 kv for 1 minute.
•  Insulation Resistance: ≥**0 Mohm
•  Mechanical Durability: ≥1,*0,**0 operations.
•  Electrical Durability: ≥*0,**0 operations.
•  Tested as per IEC*****1