Master Controller


Master controller are used for remote operation of the equipment like E. O. T cranes & rolling mills drives etc. The enclosure of the controller confirms to I. P 54 degrees of protection, making it dust proof. It has u to 6 notches either side with maximum 24 contacts as per desired sequence. Controller are provided with spring & Dead man’s handle arrangemtn. They are compact up to 4-0-4 step. Suitable for Hoist-Grab, Cross Travel Long Travel. Up tp 16 contacts per motion with spring return arrangement is provided.

Salient Features:

  • Long Life: Millions of operations are possible without significant wear to melamine cams and contacts which are rated for 40amps at 500 V A.C.
  • Simple Maintenance: Maintenance is simplified through the use of individual interchangeable contact blocks. Contact tips can be easily inspected without removing the block or disturbing connections. When contacts are worn, only fixed and moving contacts can be replaced by removing only one screw. The remaining contact blocks and circuits are disturbed.
  • Wide Electrical Clearance: The design of contact block provides generous electrical creepage and clearance, preventing arcing between contact blocks or to ground. Heavy duty terminal screws are located for convenience and ease of wiring.

Techincal Data

Body Material Sheet Steel/Aluminium Die cast
Protection Degree IP-44/ IP-54
Confirming to IS-13947(Part-1) 1993
Mounting Position Horizontal/Vertical
Contact Material Silver Cadmium
Rated Voltage Insultion 500V A.C.
Thermal Test Current 10 Amps.
Cable entries 2×20 ø 2×26 ø standard Conduit
Frequency of operation 100 switching per hour
Contacts Single/ double break
No. of contacts 24 maximum
No. of steps 7-0-7 maximum
Optional Spring return/deadman’s handle arrangement