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Which kind of DC contactors do electric vehicles require?
DC contactors are widely used in electric vehicles, charging piles, energy storage systems, power battery packs, electric forklifts, electric golf carts, electric agricultural machinery, electric ships, electric off-road motorcycles, electric snowmobiles, electric tricycles, electric aerial work platforms, electric garden tools, electric cleaning vehicles, automatic fruit pickers, Autonomous Mobile Robots (AMRs), electric agricultural robots, etc. They serve as executive switching devices for connecting and disconnecting DC circuits for high-power, high-voltage EV platforms, and on function side are widely applied in:
•Battery main circuit isolation
•Pre-charge and emergency disconnect (E-Stop)
•Motor & inverter DC input protection
•On-board charging systems
One of their most extensive application categories covers motor load scenarios, specifically all types of electric vehicles. With operating voltages ranging from tens of volts up to approximately 1000Vdc, DC contactors deliver the following performance features to effectively ensure the long-term, safe, and reliable operation of electric vehicles:
1. Epoxy sealed:
IP65, Completely prevents dust from entering and avoids internal dust accumulation
2. N2 Gas sealed:
1)Prevent oxidation of contact
2)High impulse withstand voltage up to 4.5kV per millimeter
3)Ensure high electrical lifetime capacity
3. Strong magnet together with N2 Gas sealed:
Ensure high making and breaking electrical lifetime capacity
4. Double-sided silver alloy contact: AgSnO2
Impact current resistant and contact adhesion avoided
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16 Décembre 2025 à 02h07
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