Process introduction
Dc contactor is a contactor used in dc circuit, mainly used to control dc circuit (main circuit, control circuit and excitation circuit, etc.)
Since the suction coil of the dc contactor goes through dc, there is no shock of the starting current, and the iron core will not collide violently, so it has a long life and is suitable for frequent starting and stopping occasions
When the contactor coil is energized, the coil current generates a magnetic field, which causes the static iron core to generate electromagnetic suction to attract the moving iron core, and drives the contact action: normally closed contact is broken, normally open contact is closed, the two are linked.When the coil is cut off, the electromagnetic suction disappears, the armature is released under the action of a releasing spring, and the contact is restored: normally open contact is broken, normally closed contact is closed
Applied to electric vehicles, hybrid electric vehicles, construction machinery, photovoltaic power generation, dc voltage power supply control system, contact and coil connection without polarity requirements
The rated load current of the contact circuit is generally 50A,100A，200A，400A
Production capacity
The contacts of this type are flake-like silver alloy contacts, the main materials are silver cadmium oxide, silver copper oxide, silver tin oxide and silver alloy copper coating
According to the current size, the specification of the contact is not the same, generally for 6mm，8mm，10mm，11mm，12mm，14mm，16mm
This type of contact needs to be made of silver alloy strip or silver alloy copper clad strip, which is stamped through the mold, so the period is generally 15 to 20 days
Packaging and service
we have a special grinding and polishing process for the post-treatment to ensure that the contact is free of burr and copper chips. At the same time, we use imported contact protective agent to improve the contact resistance
The packing method of the contact is vacuum, the contact is in line with the international environmental protection ROHS and REACH standards, the packaging bag is in accordance with ROHS and REACH standards for purchase
Quality guarantee
The raw materials of each batch will be selected during the incoming inspection, and the daily production status will be recorded during the process inspection and finished product inspection to ensure the qualified rate
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