The Schneider Electric LR97D015E is an electronic overcurrent relay from the LR97 series, designed for motor protection in control panels. It detects locked rotor, mechanical jamming (I > 3 x Isetting), phase failure, and overload conditions where Imax exceeds the set threshold. The thermal protection adjustment range spans 0.3...1.5 A, with a tripping threshold of 0.3...1.3 A, making it suited for protecting small to medium motor loads on a 48 V AC/DC control supply.
Rated supply voltage is 48 V AC/DC — this is the coil voltage, not the motor power circuit. The relay operates on either AC or DC control power at 50/60 Hz, which simplifies panel wiring when both supply types are present. The reset options include automatic reset with a fixed 120 s delay, electrical reset by interrupting the supply for minimum 0.1 s, and manual reset. The 120 s automatic delay prevents immediate restart after a fault, which is standard for compressor or conveyor applications where rapid cycling could damage the load. Mounts directly on a contactor or on a DIN rail, occupying 45 mm width on the rail.
Designed to IEC 60947 and IEC 60255-6 standards, with a rated insulation voltage of 600 V (CSA/UL) and 690 V per IEC 60947-4-1. Surge withstand is 6 kV per IEC 61000-4-5, and dielectric strength is tested at 2 kV 50 Hz per IEC 60255-5.