Widely used in AD or DC power supply switch of mining – drive and control system, electric vehicle, mobile mining equipment, aviation mobile devices, backup power supply system, hydrogen fuel cell drive system, ships and underwater equipment, solar power equipment. It is the ideal choice of large mobile power supply circuit.

Specifications:

Item	Technical Parameter
Contact arrangement (main)	SPST-NO
Rated operating voltage	12-750VDC/VAC
Rated carrying current	350A (1/0 cable – 53mm² cross-section area)
Max carrying current (1 time)	1 second, 2000A; 60 seconds, 600A; 600 seconds, 400A
Switching capacity	see figure 1, power switching capacity for resistive load
Max cut-off current	2000A,320VDC,one time
Contact resistance Max rated carry current Typical 350A	0.4mΩ 0.3mΩ
Mechanical life	300,000 cycles
Operate time, 25℃ Close (includes bounce) max Close (include bounce) typical Bounce on close, max Release time (includes arc time at max. break current)	30ms 13ms 7ms 12ms
Contact arrangement (auxiliary)	SPST-NO (the auxiliary contact is mechanically linked to the main power contacts)
Auxiliary contact rating	2A,24VDC
Minimum current and voltage for auxiliary contact	100mA,8V
Insulation resistance at 500VDC 500VDC	100mΩ (50mΩafter life test)
Dielectric at sea level (leakage ＜1mA)	2200VRMS
Shock (saw tooth or 1/2 sine, 11ms)	20G’s
Vibration, sinusoidal (10-2000 Hz peak)	20G’s
Operating ambient temp range	-55~85℃
Storage ambient temp range	-55~125℃
Weight, typical	0.38KG (without nuts/washers)

Features of contactor:

Great temperature resistance property, can work under condition from -55℃ to 85℃.
Adopts ceramic, the same with the space program; reduced risk of fire or meltdown in over-current conditions.
Small size, can withstand and switch large current.
Hermetically sealed, with no risks of arcing leakage and fire.
Sealing chamber can effectively prevent contact oxidized and melted. Low and stable contact resistance.
Can be used in any environment, including immersion, high/low pressure and other harsh environment.
Not position sensitive, can be mounted in any position for ease of installation.
Products with ceramic sealing technology have higher usage temp and more reliable sealing performance.
Small volume, long life and light weight

Sealed Small Light High Voltage DC Contactor used in AD or DC power supply switch

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