Square D HJL36100U44XAABCSHYP 100A 3-Pole 600 V Circuit Breaker

Meet the Square D HJL36100U44XAABCSHYP 100A 3-Pole 600 V Circuit Breaker—the rugged, reliable protector your three-phase electrical system depends on. Engineered by Square D, this part delivers dependable overcurrent protection for demanding industrial and commercial environments, helping keep equipment safe and uptime high.

Key specifications at a glance

• Current rating: 100 A
• Poles: 3
• Voltage rating: 600 V
• Part number: HJL36100U44XAABCSHYP

Why this model stands out

Designed for three-phase systems, the 3-pole configuration provides synchronized interruption across all phases, ensuring balanced protection when faults occur. The 100 A rating makes it well-suited for mid-range feeders and motor circuits in busy facilities, while its 600 V capacity covers a broad range of commercial and light industrial applications. Built to integrate seamlessly with Square D panelboards, this breaker supports straightforward ordering, replacement, and system upgrades within the Schneider Electric ecosystem.

Ideal use cases

• Three-phase distribution panels in manufacturing, warehouses, or data centers
• Motor control circuits that demand reliable overload and short-circuit protection
• Panel upgrades or replacements where a precise 100 A, 3-pole, 600 V solution is required

Installation and compatibility tips

• Verify compatibility with your Square D panel or distribution board before installation.
• Follow the panel manufacturer’s mounting and torque guidelines to ensure secure operation.
• Keep a spare few for quick field replacement to minimize downtime during maintenance windows.

Practical insights for better protection

Choosing the right circuit breaker isn’t just about current and voltage ratings. The 3-pole design provides coordinated isolation for all phases, which is crucial for preventing uneven loads and protecting three-phase equipment. For facilities that rely on motors, pumps, and conveyors, this unit offers a dependable balance of protection and performance, helping to safeguard both equipment and personnel.