The JR38 series thermal overload relays provide overload and phase failure protection for AC motors. They are suitable for 50/60 Hz systems with voltages up to 690 V and current ranges from 0.1 to 93 A (8-hour duty or uninterrupted duty). Key features include phase failure protection, ON/OFF indication, temperature compensation, and manual/automatic reset. The relays comply with IEC 60947-4-1 and can be mounted directly onto contactors or used as standalone units.

