New relay offers high short-circuit protection in EV charging applications

February 20, 2025

The four-pole AZEV400 relay from ZETTLER supports the efforts of charge point manufacturers to comply with important safety and operating standards, and the relay provides 5 kV of isolation.

The AZEV400 relay from ZETTLER offers comprehensive short-circuit protection in electric vehicle charging applications. The short-circuit capability has been validated at 3 kA and 10 kA across voltages from 230 V to 400 V, providing consistent performance and safety even under extreme conditions.

 

Rated for a maximum load of 50 A and a switching capability of 480 V ac, the AZEV400 is intended for use in IEC 61851 Mode 3 charging applications.

 

The relay provides robust protection in demanding charging environments. For instance, it features a surge withstand voltage of up to 10 kV, while enhanced insulation adds an extra layer of safety. The relay also features dielectric strength of up to 5 kVrms. Additionally, the AZEV400 is equipped with a mirror contact characterized according to the EN 60947-4-1 standard, enabling secure monitoring of switching contacts, and offering robust protection in safety-critical applications.

 

These features make the AZEV400 the ideal choice for durable and secure charging infrastructure.

Features

  • Four normally open load contacts plus mirror contact
  • Coil voltage ratings: 6 V, 9 V, 12 V or 24 V dc
  • At least 4.0 mm load contact gap
  • Withstands inrush currents according to ISO 17409 cl. 8.2.2
  • Standards compliance:
    • IEC 62955
    • IEC 62752
    • IEC 61008-1
    • IEC 62052-11

Applications

  • Offboard electric vehicle charging points
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