Schneider Electric LRD325L Thermal Iec Overload Relay

Product Description

The SCHNEIDER ELECTRIC LRD325L is a thermal IEC overload relay rated for 17 to 25 amps at up to 690 VAC. It uses thermal sensing to monitor motor current draw and trip the circuit when sustained overcurrent conditions occur, protecting motors and downstream equipment from heat-related damage. Trip Class 20 means the relay will trip within 20 seconds at 7.2 times the rated current from a cold state, which suits many standard industrial motor applications. Dimensions are 2.5 inches tall, 4.4 inches wide, and 5.4 inches in length. The unit weighs 0.97 pounds. Licensed electricians and industrial maintenance technicians are the primary installers.

This relay is designed for use in industrial motor control applications where IEC-style contactors are specified. It pairs directly with LC1D40A and LC1D65A contactors for integrated overload protection in motor starter assemblies. Typical installations include three-phase motor circuits in commercial and light industrial settings such as pump panels, conveyor drives, compressor starters, and HVAC fan motor control panels.

Key Features

• Thermal sensing method provides reliable overcurrent detection based on motor heat buildup
• Adjustable current range of 17 to 25 amps covers a broad range of motor frame sizes
• Trip Class 20 rating suits standard-duty motors with moderate starting loads
• Rated for operation up to 690 VAC for compatibility with higher-voltage IEC motor circuits
• Direct mount design integrates with LC1D40A and LC1D65A contactors without additional hardware
• Compact footprint at 2.5 by 4.4 by 5.4 inches simplifies panel space planning

Compatibility

Specified for use with LC1D40A and LC1D65A IEC contactors as part of a complete motor starter assembly.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the NEC and applicable local codes. De-energize and lock out the panel before mounting or wiring the relay. Verify that the contactor model is confirmed compatible before installation, and set the current adjustment dial to match the motor nameplate full-load amperage after mounting. Do not energize the circuit until all connections are secured and the enclosure is properly closed.