Square D HJA36150SL 150A 600 V Circuit Breaker

Square D HJA36150SL 150A 600 V Circuit Breaker is a genuine Square D protective device designed to safeguard electrical distributions in commercial and light industrial settings. With a 150 A current rating and a 600 V maximum voltage rating, this breaker provides dependable protection for high-load circuits and critical equipment.

Designed for compatibility with Square D panels that accept HJA-series breakers, the HJA36150SL offers a reliable, known-fit replacement option when upgrading or servicing your panel. Keep your electrical system protected against overloads and short circuits while maintaining uniform trip characteristics and a solid mechanical fit.

• Key specs: Part Number HJA36150SL • Current Rating: 150 A • Voltage Rating: 600 V
• Ideal applications: Main service disconnects or feeder protection in panels and distribution systems rated up to 600 V; suitable for commercial and light industrial equipment and machinery
• Reliability you can count on: Square D engineering and manufacturing deliver consistent performance and compatibility within Square D ecosystems
• Easy replacement: Designed as a direct replacement for compatible Square D enclosures, simplifying maintenance and reducing downtime

Use cases include protecting feeders to motors in workshops, guarding distribution to factory machinery on production lines, or serving as the main disconnect in a commercial electrical room. This breaker helps prevent damage from overloads and fault currents while ensuring compatibility with existing Square D installation practices.

Practical installation notes: verify panel compatibility and labeling before installation, follow all safety procedures, and have a licensed electrician perform replacement in accordance with local electrical codes. If your system previously used an HJA-series device, this part provides a straightforward upgrade path to maintain protection levels across circuits.