Flame Proof 40 Amps Counter Weight Operated Gravity Type Shunt Limit Switch – Gas Groups 2C
Flame Proof 40 Amps Counter Weight Operated Gravity Type Shunt Limit Switch is designed for operation in a hazardous environment, where explosive gases/vapors are present. The robustly designed Flame-proof enclosure is modified to meet the requirement as specified on IS/IEC-600079-0-2007 & IS/IEC 600079-1-2007. The enclosure is made of Aluminum Alloy LM 4. Each enclosure is subjected to a hydrostatic pressure test. The enclosure is certified by the Central Institute of Mining & Fuel Research for use in Gas Group IIC. limit switch with 2 NC Contacts rated for 40 Amps at 500 V.A.C.
A two (NC) Contact elements are operated by respective rotating cams, suitably adjusted on a square cam-shaft. When a cam on the moving load hits the weight of the limit switch and rotates the square camshaft, which turns in turn operates the change over contacts.