220 Volts D.c Rotary Auxiliary Knife Switches

With a motive of delivering qualitative products, we are instrumental in manufacturing, exporting and supplying a world class range of Rotary Auxiliary Knife Switches in Nashik, Maharashtra, India.

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): 10Amp.
Operational Voltage: 220 volts d.c.
Operational Current: 2.0 Amp.
Utilisation Category: DC113
Switching capability: Inductive loads with L/R ratio (time constant) of 20mS.
Dielectric Strength: 2.0 kv for 1 minute.
Insulation Resistance: a Y500 Mohm
Mechanical Durability: a Y1,00,000 operations.
Electrical Durability: a Y50,000 operations.
Tested as per IEC-62271