Totally Sealed Small Light High Voltage DC Contactor with Long Life
and Large Current Tolerance
Applications of contactor:
- 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
Contact arrangement (main)
Rated operating voltage
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
see figure 1, power switching capacity for resistive load
Max cut-off current
Max rated carry current
Operate time, 25℃
Close (includes bounce) max
Close (include bounce) typical
Bounce on close, max
Release time (includes arc time at max. break current)
Contact arrangement (auxiliary)
SPST-NO (the auxiliary contact is mechanically linked to the main
Auxiliary contact rating
Minimum current and voltage for auxiliary contact
Insulation resistance at 500VDC 500VDC
100mΩ (50mΩafter life test)
Dielectric at sea level (leakage ＜1mA)
Shock (saw tooth or 1/2 sine, 11ms)
Vibration, sinusoidal (10-2000 Hz peak)
Operating ambient temp range
Storage ambient temp range
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
- 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
- Products with ceramic sealing technology have higher usage temp and
more reliable sealing performance.
- Small volume, long life and light weight