NR8 series thermal overload relay (referred to as thermal relay) It is suitable for overload and phase failure protection of AC motors with long-term operation or intermittent long-term operation of 50Hz/60Hz, voltage to 690V, current 0.1A~38A. The thermal relay also has functions such as temperature compensation, motion indication, automatic and manual reset, stop, etc. The product performance is stable and reliable. Meet the standard: GB/T 14048.4, IEC 60947-4-1. The thermal relay is connected to the contactor for installation.