Standard Specification: IS 13947 ( Part 4/Sec1) DC1 Duty
Rating: Up to 3000 AMPS @ 60 V DC
Configuration:

Single Pole Normally Open
Single Pole Normally Close

Design feature:

Silver Alloy Contacts for low contact resistance
Powerful Electromagnet For High Contact Pressure.
Bus Bar Mounting
Epoxy Encapsulated Coil