Overload and phase-failure protection of AC motors.

VR30 series thermal overload relay are suitable for overload and phase-failure protection of AC
motors with frequency of 50/60Hz,voltage up to 690V,current up to 0.1-30A under 8-hours duty or uninterrupted duty.

Functions provided by these relays, are phase-failure protection, temperature compensation,
Test button and manual reset.

Applicable Standards
National Standard: GB 14048
International Standard: IEC 60947-4-1
The relays can be mounted onto contactors or installed as single units.