Square D 9066RB1 Starter Reset Mechanism

Product Description

The SQUARE D 9066RB1 is a replacement reset mechanism designed for use with magnetic motor starters. This accessory restores manual reset functionality to a starter that has tripped due to overload or fault conditions, allowing the starter to be re-energized after the cause of the trip has been addressed. It is a direct OEM-style replacement component intended for installation by licensed electricians and qualified motor control technicians working on industrial or commercial motor control equipment. The part ships as a single unit and installs without additional accessories.

This reset mechanism is a starter accessory suited for motor control applications in commercial and light industrial environments. It is designed specifically for use with SQUARE D 8538 and 8539 series magnetic motor starters. These starters are commonly found in pump control panels, HVAC equipment, compressor circuits, and other three-phase motor applications where manual reset overload protection is required.

Key Features

• Direct replacement reset mechanism restores manual reset capability to faulted starters
• Designed specifically for SQUARE D 8538 and 8539 series starters
• OEM-style fit eliminates the need for field modification
• Compact form factor suited for panel-mount starter enclosures
• Single-unit packaging for individual repair or service calls

Compatibility

Compatible with SQUARE D 8538 and 8539 series magnetic motor starters as stated by the manufacturer.

Installation Notes

Installation should be performed by a licensed electrician. Disconnect and lock out all power to the motor control center or starter enclosure before servicing any starter components. Verify that the cause of the overload trip has been identified and corrected before resetting the starter mechanism. Work on motor control equipment should comply with applicable NEC requirements and the equipment manufacturer's service documentation.