This product adopts modularity design which may assembly the most contact poles and forms (such as normally open, normally closed and switching) required by customers with minimum parts. The coil of this series covers a large of current and can be modified according to customer's requirement. Besides, it makes use of horizontal magnetic blowout with make/break current of maximum 220V DC, so we use horizontal magnetic blow-our. They are used in program-controlled or successive power supply, forklift, electro car, engineering machinery, etc.