Schneider Electric LRD350 Overload Relay 37 A 50 A

Schneider Electric LRD350 Overload Relay

The Schneider Electric LRD350 is a thermal overload relay designed to protect three-phase motors in industrial control panels. It provides adjustable overload protection with a current setting range from 37 A to 50 A and a trip class of 10A. The unit mounts directly onto compatible TeSys Deca contactors for a compact starter assembly. It is suited for maintenance engineers and panel builders specifying motor protection up to 690V AC.

Direct contactor mounting and screw clamp terminals

The relay mounts directly to a compatible contactor, eliminating the need for a separate DIN rail mount and reducing panel space. Screw clamp terminals accept standard wiring tools for secure connections. Auxiliary contacts include one normally open and one normally closed circuit for signalling or interlocking. The manual reset function requires operator intervention after a trip event, ensuring fault investigation before restart.

For three-phase motor protection up to 50 A

This relay suits applications where thermal overload protection is required for motors drawing between 37 A and 50 A at up to 690V AC. It is not suitable for applications needing electronic overload features, automatic reset, or current settings outside the stated range. Builders requiring NEMA-rated starters or different trip classes should select an alternative device.