Abb OA1G10 1-NO Auxiliary Switch Ot Os Disconnect

Product Description

The ABB OA1G10 is a 1-NO (normally open) auxiliary switch designed for use with OT and OS series disconnect switches. Auxiliary switches provide a secondary contact signal that mirrors the position of the main disconnect, allowing control circuits to monitor switch state or trigger interlocks and indicators. The OA1G10 mounts directly to compatible ABB rotary disconnect switches and is installed by licensed electricians working on industrial or commercial power distribution equipment. It is a compact, add-on accessory that expands the functionality of an existing switch assembly without replacing the base unit.

This auxiliary switch is suited for industrial panel builds, machine control enclosures, and commercial electrical distribution systems where switch position feedback is required. Typical applications include motor control centers, disconnect panels, and machinery requiring safety interlocking or PLC input signals tied to the disconnect position. Electricians and panel builders add this accessory during initial assembly or as a field retrofit on installed OT and OS series switches.

Key Features

• 1-NO (normally open) contact configuration for switch position signaling
• Designed to mount directly on ABB OT and OS series rotary disconnect switches
• Enables control circuit interlocking, indicator wiring, or PLC input integration
• Field-installable accessory for new builds or retrofits on existing switch assemblies

Compatibility

Designed for use with ABB OT and OS series rotary disconnect switches as stated in product data. Confirm compatibility with the specific OT or OS switch model before ordering.

Installation Notes

Installation should be performed by a qualified electrician in accordance with NEC requirements and local codes. De-energize and lock out the disconnect switch and all associated circuits before installing or servicing this auxiliary switch. Follow the ABB installation instructions supplied with the accessory for proper mounting and contact wiring. Do not energize the circuit until the auxiliary switch is fully seated and secured on the disconnect body.

Technical Specifications

• Contact Configuration: 1-NO (Normally Open)
• Compatible Switch Series: OT, OS
• UPC: 41701910244

Standard Information

• Brand: ABB
• Manufacturer Part Number: OA1G10