Square D HJA36150SLYP 150A 3-Pole 600 V Circuit Breaker

Meet the Square D HJA36150SLYP 150A 3-Pole 600 V Circuit Breaker—an essential piece of three-phase protection designed for demanding electrical environments. With a 150 A current rating and a 600 V maximum, this part number HJA36150SLYP delivers reliable interrupting capability across all three phases, helping safeguard motors, feeders, and other heavy loads from overloads and short circuits.

Key specifications

• Part number: HJA36150SLYP
• Current rating: 150 A
• Poles: 3
• Voltage rating: 600 V

Why this breaker stands out

• Three-pole design for balanced protection—interrupts all three phases simultaneously, reducing the risk of phase imbalance that can damage motors and equipment.
• High-voltage capability—rated up to 600 V, making it suitable for medium-voltage distribution and robust industrial applications.
• Brand-backed reliability—Square D is known for dependable protection devices that align with common panelboard and distribution systems.
• Clear, durable protection—built to withstand the demands of daily operations while providing straightforward protection and easy identification in panel schedules.

Ideal applications

• Protecting three-phase motor circuits and machinery in manufacturing floors, HVAC systems, and processing lines.
• Feeder protection for commercial and light industrial panels that run on three-phase power.
• Main or branch circuit protection within panels designed to accommodate 150 A, 3-pole devices.

Installation and compatibility tips

Designed to integrate with compatible Square D panels and bus systems, this 150 A 3-pole 600 V breaker fits where a three-phase protective device is required. When selecting this breaker, verify that your panel accepts HJA36150SLYP and that the device’s interrupting rating and voltage rating align with your system design. Always follow local electrical codes and enclosure manufacturer guidelines during installation.

Maintenance and best practices

• Replace after abnormal trips or indication of wear to maintain optimal protection.
• Label circuits clearly in the panel schedule to reflect three-phase protection and facilitate quick service.
• Keep the surrounding area dry and free of dust to preserve reliability and safe operation.

For reliable three-phase protection in demanding environments, the Square D HJA36150SLYP 150A 3-Pole 600 V Circuit Breaker delivers targeted, durable performance that supports motor longevity, safe distribution, and clear electrical planning.