A rectangular high-voltage relay for an electric vehicle (EV) is a type of electrical switch that is used to control high-voltage DC circuits in the EV’s powertrain. These relays are typically used in EVs to switch high currents and voltages, such as those in the battery pack, motor, and charging system.

Rectangular high-voltage relays are typically larger than cylindrical DC relays and have a rectangular shape, with multiple contacts that can be opened or closed by an electromagnetic coil. The specific design of the relay may vary depending on the application, but they typically have features such as:

  • High voltage and current ratings suitable for EV applications.
  • A durable and reliable construction that can withstand the high voltages and temperatures associated with EV powertrain operation.
  • Low contact resistance to minimize power losses and heat generation.
  • A fast response time to quickly switch the high currents and voltages in the EV’s powertrain.

Rectangular high-voltage relays may be used in EVs for functions such as:

  • Controlling the main contactor that connects and disconnects the battery pack from the motor and other systems.
  • Controlling the pre-charge resistor that limits the current flow during the initial charging of the high-voltage system.
  • Controlling the DC-DC converter that converts the high-voltage battery power to the lower-voltage power required for auxiliary systems such as lights, HVAC, and infotainment.

The choice of a specific type and size of rectangular high-voltage relay will depend on the specific requirements of the application, such as the voltage and current ratings, switching speed, and environmental conditions.

EV DC Relay

EVM DC Relays

Rectangular DC high Voltage Relays

1 Form A

Max Switching Voltage 1000 VDC

Contact Rate: 30A 50A 100A 150A 200A 250A 300A

Insulation Resistance: 1000MΩ (1000VDC)

EVM Relay