Square D S29410 Undervoltage Release H J Frame Breakers

Product Description

The SQUARE D S29410 is an undervoltage release accessory designed for use with H and J frame circuit breakers. An undervoltage release trips the breaker automatically when line voltage drops below a set threshold, protecting connected equipment from damage caused by low-voltage conditions. This accessory mounts directly to compatible breaker frames and integrates into the breaker mechanism without external wiring complexity. Licensed electricians and panel technicians install this part during new circuit breaker builds or retrofit projects where undervoltage protection is required by system design or code compliance.

The S29410 is suited for commercial and industrial electrical distribution applications where H and J frame breakers are deployed. It is appropriate for use in motor control, feeder protection, and switchgear panels where automatic tripping on undervoltage conditions is a specified requirement. Installation is performed by qualified electrical contractors working on low-voltage distribution systems.

Key Features

• Undervoltage release function trips breaker automatically on voltage drop
• Compatible with H and J frame Square D circuit breakers
• Compact form factor fits within the breaker accessory envelope
• OEM accessory designed for direct integration with compatible breaker frames
• Sold as a single unit

Compatibility

Designed for use with H and J frame Square D circuit breakers as stated by the manufacturer.

Installation Notes

Installation of undervoltage release accessories must be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and applicable local codes. De-energize and lock out the circuit breaker and panel before beginning any accessory installation. Follow the breaker manufacturer instructions for mounting the accessory to the breaker frame. Do not install this accessory on breaker frames outside the specified H and J frame types.