Square D HJL36045UA 45A 3-Pole 600 V Circuit Breaker

Meet the Square D HJL36045UA 45A 3-Pole 600V Circuit Breaker—the sturdy, three-phase protection your electrical distribution relies on. Built to safeguard demanding commercial and industrial panels, this breaker delivers reliable overcurrent protection for multi‑phase systems up to 600 volts.

With a 45‑amp current rating spread across three poles, it is designed to shield motors, pumps, conveyors, and other three‑phase equipment from overloads and short circuits. When fault conditions arise, this breaker isolates the faulty circuit quickly, helping minimize downtime and protect downstream equipment.

What makes this 3‑pole, 600 V solution compelling

• Three-pole design: authentic three-phase protection that suits multi‑phase power distribution.
• 45 A rating: appropriately paired for moderate-load motors and three‑phase loads without over‑tripping normal operation.
• 600 V maximum rating: appropriate for higher‑voltage panel networks commonly found in commercial and industrial settings.
• Durable Square D construction: built to withstand the rigors of everyday electrical duty in crowded equipment rooms and switchgear environments.
• Straightforward compatibility: designed as a practical replacement within compatible Square D panels that support the HJL series.

Ideal use cases

• Protecting three-phase motors in manufacturing lines, cooling systems, and processing equipment.
• Power distribution for commercial HVAC systems, pumps, and conveyors that run on three-phase power.
• Protecting three-phase equipment in data centers, warehouses, and industrial facilities where reliable circuit isolation matters.

Installation, safety, and compatibility tips

• Ensure the panel or distribution setup is compatible with the HJL series and this exact part number (HJL36045UA).
• Match the current rating and pole configuration to your load and conductor sizing, and follow all local electrical codes and the manufacturer’s installation guidelines.
• During replacement or installation, power down the system and take appropriate safety precautions to prevent accidental energization.

Specifications at a glance

• Brand: Square D
• Part number: HJL36045UA
• Current rating: 45 A
• Poles: 3
• Voltage rating: 600 V
• Product type: Circuit Breaker

Invest in the Square D HJL36045UA to deliver dependable three‑phase protection, streamlined maintenance, and peace of mind for your 3‑pole, 600‑volt electrical installations. Add it to your panel today and keep your critical equipment safeguarded against overloads and faults.