Square D HJL36100M73SKYP 100A 3-Pole 600 V Circuit Breaker

The Square D HJL36100M73SKYP is a robust overcurrent protection solution designed for 3-phase electrical systems. With a 100 A current rating and a 3-pole configuration, this circuit breaker provides reliable shutdown across all three phases in circuits up to 600 V, helping safeguard equipment and keep outages to a minimum.

Key specifications

• Part Number: HJL36100M73SKYP
• Current rating: 100 A
• Poles: 3
• Voltage rating: 600 V

Why this matters

In commercial and light industrial environments, reliable protection for 3‑phase loads is critical. The Square D HJL36100M73SKYP delivers coordinated protection for three conductors, helping prevent damage from overloads and short circuits while allowing safe, simultaneous disconnection of all phases. Its compatibility with Square D panels means fewer fit-and-finish issues during replacement or retrofits, reducing downtime and maintenance headaches.

Ideal for

Installers and facility managers seeking a dependable 3-pole, 600 V circuit breaker for mid-range loads will find the HJL36100M73SKYP a natural fit. It’s well-suited for motor circuits, distribution panels, and service entrances in facilities that rely on steady 3-phase power and need reliable protection without oversizing the protection device.

Common applications

• Protection of 3-phase motor feeders in manufacturing, HVAC, and processing equipment
• Distribution panel protection for commercial and light industrial buildings
• Replacement part for existing Square D installations to restore standard protection levels

Installation and maintenance tips

• Verify panel compatibility and ensure the unit fits your Square D distribution equipment before installation.
• Follow proper safety protocols and lockout/tagout procedures when servicing electrical panels.
• Adhere to manufacturer guidelines for mounting and electrical connections to ensure reliable performance.