Square D 9066RB2 Starter Reset Mechanism

Product Description

The SQUARE D 9066RB2 is a replacement reset mechanism designed for use with magnetic motor starters. This accessory restores manual reset functionality to a starter assembly when the original mechanism has worn or failed. It fits directly into the starter housing and allows a technician to manually reset the overload relay after a trip event, returning the motor circuit to an operable state. The 9066RB2 is a discrete starter accessory intended for installation by qualified electricians or industrial maintenance technicians working on motor control equipment.

This reset mechanism is suited for commercial and industrial motor control applications where 8538 or 8539 series magnetic starters are installed. Typical install scenarios include motor control centers, panel-mounted starters, and standalone starter enclosures found in HVAC, pump, compressor, and conveyor drive applications. The part is a direct OEM-style replacement and is packaged as a single unit.

Key Features

• Direct replacement reset mechanism for 8538 and 8539 series starters
• Restores manual overload reset capability to the starter assembly
• Single-unit packaging suitable for service and repair stock
• Compact form factor designed for drop-in installation within the existing starter housing

Compatibility

Designed for use with SQUARE D 8538 and 8539 series magnetic motor starters.

Installation Notes

Installation should be performed by a licensed electrician or qualified industrial maintenance technician. De-energize and lock out the starter and associated motor circuit before beginning any disassembly, following NFPA 70E lockout/tagout procedures. Verify the replacement mechanism is fully seated and the reset action operates freely before restoring power. Confirm the overload relay has been properly reset and the fault condition has been corrected prior to returning the motor to service.