Application

3RU 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 0.1-100A under 8-hours duty or uninterrupted duty. Several functions provided by these relays, are phase-failure protection,temperature compensation, ON/OFF indication ,Stop button ,Test button and manual/automatic 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.