Schneider Electric LRD146 Thermal Iec Overload Relay

Product Description

The SCHNEIDER ELECTRIC LRD146 is a thermal IEC overload relay rated for 7 to 10 amps at up to 690 VAC. It provides motor branch circuit protection by detecting sustained overcurrent conditions and tripping to interrupt control power before motor windings sustain heat damage. Trip Class 10A means the relay will trip within 10 seconds at 7.2 times the set current, making it suitable for standard motor starting loads. Licensed electricians and industrial maintenance technicians install this device as part of a motor starter assembly in control panels and machine enclosures.

The LRD146 is designed for use in IEC-style motor starter assemblies in both light industrial and commercial applications. It mounts directly to compatible contactors and handles overload protection for three-phase motor loads within its 7 to 10 amp adjustment range. Typical install scenarios include conveyor drives, pump starters, fan motors, and other fixed-speed motor loads requiring reliable overcurrent protection. Compatible contactors include the LC1D09 and LC1D38 series.

Key Features

• Adjustable current setting range of 7 to 10 amps covers a broad band of motor FLA ratings in one device
• 690 VAC maximum voltage rating supports both 480 VAC and 600 VAC industrial power systems
• Trip Class 10A performance is appropriate for standard induction motor starting applications
• Thermal sensing method provides bimetallic overload detection without external power requirements
• Direct-mount design integrates with LC1D09 and LC1D38 contactors without additional wiring adapters

Compatibility

Designed for direct mounting to LC1D09 and LC1D38 series IEC contactors as stated by the manufacturer.

Installation Notes

Installation should be performed by a qualified electrician in accordance with the NEC and any applicable local codes. De-energize and lock out the panel before mounting or wiring the relay to the contactor assembly. Verify the motor nameplate FLA falls within the 7 to 10 amp adjustment range before setting the dial. Do not adjust the current setting dial while the contactor is energized.