Schneider Electric LRD3322 Thermal Iec Overload Relay

Product Description

The SCHNEIDER ELECTRIC LRD3322 is a thermal IEC overload relay rated for 17 to 25 amps at up to 690 VAC. It provides motor overload and phase-loss protection by detecting excess heat generated by sustained overcurrent conditions. The relay operates on Trip Class 10A, which defines the maximum tripping time under overload conditions and suits standard motor loads in industrial and commercial electrical systems. Licensed electricians and industrial maintenance technicians install this relay as a protective device in motor starter assemblies.

The LRD3322 is designed for use in motor control applications requiring IEC-style overload protection. It is specified for installation with the LC1D80 and LC1D95 contactors, making it suited for motor starters in commercial HVAC equipment, pump systems, compressors, and similar three-phase motor loads. It fits residential, light commercial, and industrial panels where IEC motor control components are specified.

Key Features

• Thermal sensing method detects sustained overcurrent and triggers automatic trip response
• Trip Class 10A rating suits standard induction motor applications
• Wide adjustment range of 17 to 25 amps allows field calibration to motor full-load amperage
• Rated to 690 VAC for compatibility with international and domestic motor control voltage systems
• Compatible with LC1D80 and LC1D95 contactors for direct mounting in starter assemblies

Compatibility

Designed for use with LC1D80 and LC1D95 contactors as an IEC-style overload relay in motor starter assemblies.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the NEC and any applicable local codes. De-energize and lock out the motor control panel before installing or replacing this relay. Set the overload dial to match the motor nameplate full-load amperage after mounting. Do not exceed the rated current or voltage limits of the relay.