EV Automotive High Voltage DC Relay

High Current DC Relay

Our high-voltage pre-charge relays are electromechanical devices designed to switch high voltage loads. These relays operate in the same way as electromechanical relays with the addition of features that allow these to be used in high voltage applications like battery disconnect units (BDU) and charging systems supporting the future of mobility. All of our automotive relays and contractors comply with the demanding switching requirements of hybrid and electric vehicles.

Cylindrical EVI Relay Rectangular EVM Relay

An EV car high voltage DC relay is an electrical component used in electric vehicles to control the flow of high voltage direct current (DC) power between the battery and various components of the vehicle, such as the motor and the charging system.

The high voltage DC relay typically consists of a coil, contacts, and a housing. When a voltage is applied to the coil, it generates a magnetic field that pulls the contacts together, allowing the flow of current through the relay. When the coil is de-energized, the contacts open, interrupting the flow of current.

In an electric vehicle, the high voltage DC relay is typically used to control the flow of power from the battery to the motor and other components. For example, when the driver presses the accelerator pedal, the high voltage DC relay closes, allowing the current to flow to the motor, which then turns the wheels. When the driver releases the pedal, the relay opens, cutting off the power to the motor.

The high voltage DC relay is an essential component of an electric vehicle’s electrical system, and it must be designed to handle the high voltages and currents that are typically involved in an electric vehicle’s powertrain.

Ceramic Brazing seal

Rectangular EVM Series

Ceramic Brazing seal, No arc leakage, Make sure no fire a burst, The insulation resistance reaches 1000MΩ(1000VDC) and meets the requirements of IEC60664-1 

 Product Features 

Coil Voltage: 12VDC 24VDC

Current: 40A 100A 200A 300A 400A

Voltage: 450VDC 750VDC

EM DC Relay drawing

Silence

Compact structure, low noise 

Safe

The mixed gas mainly filled with hydrogen can prevent the contact from oxidation and burn 

High Currency

40A 85℃ long time current carrying capacity 

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EVM Series Catalogue

special epoxy seal

Cylindrical EVI Series

 Special Epoxy seal, No arc leakage, protection class IP68, Make sure no fire a burst, The insulation resistance reaches 1000MΩ(1000VDC) and meets the requirements of IEC60664-1 

 Product Features 

Coil Voltage: 12VDC 24VDC

Current: 40A 100A 200A 300A 400A

Voltage: 450VDC 750VDC

Cylindrical DC Relay

Silence

Compact structure, low noise 

Safe

The mixed gas mainly filled with hydrogen can prevent the contact from oxidation and burn 

High Currency

40A 85℃ long time current carrying capacity 

EVI Series Catalogue

Automotive DC Relay

Customized Relays can be provided