Eaton CH8BSM Mechanical Interlock Ch Series

Product Description

The EATON CH8BSM is a mechanical interlock accessory designed for use with CH series load centers and panelboards. It prevents two breakers from being energized simultaneously, a critical safety function in transfer switch applications and generator tie-in installations. Licensed electricians install this interlock to meet code requirements for manual transfer configurations, ensuring only one power source feeds the panel at a time. At 6.5 pounds and with a slim profile of 1 inch in depth, the CH8BSM is a compact hardware solution built for straightforward field installation.

The CH8BSM is intended for residential and light commercial electrical applications where a generator or alternate power source must be interlocked with the utility feed. It is commonly installed in CH series load centers during new construction or retrofit projects that require a manual transfer capability without a dedicated transfer switch. This approach is often used when local codes permit interlock-based generator connections.

Key Features

• Mechanical interlock prevents simultaneous energizing of two breakers
• Designed for CH series load centers and panelboards
• Supports code-compliant manual transfer configurations
• Slim 1-inch depth for easy fit within standard enclosures
• Packaged dimensions: 17 inches x 14.75 inches x 1 inch

Compatibility

Designed as an OEM-style accessory for EATON CH series load centers and panelboards. Consult the load center documentation to confirm specific breaker position and model compatibility before installation.

Installation Notes

Installation should be performed by a licensed electrician in accordance with NFPA 70 (NEC) requirements and any applicable local codes. Always shut off utility power and verify the panel is de-energized before installing or adjusting interlock hardware. Follow the load center manufacturer instructions for proper breaker positioning and interlock mounting. Do not force or modify the interlock mechanism, as improper installation can defeat its safety function.

Technical Specifications

• Weight: 6.5 pounds
• Package Length: 17 inches
• Package Width: 14.75 inches
• Package Height: 1 inch
• UPC: 78211309960

Standard Information

• Brand: EATON
• Manufacturer Part Number: CH8BSM