Square D HGA36110SR 110A 3-Pole 600 V Circuit Breaker

Designed for demanding three-phase power systems, the Square D HGA36110SR 110A 3-Pole 600 V Circuit Breaker delivers dependable overcurrent protection for industrial and commercial electrical installations. With a 110-amp rating across three poles and a 600-volt maximum rating, this unit is built to safely interrupt faulted circuits, helping reduce downtime and protect valuable equipment.

Key specifications

• Current rating: 110 A
• Poles: 3
• Voltage rating: 600 V
• Part number: HGA36110SR
• Brand: Square D

Why this matters

In three-phase systems, a reliable 3-pole breaker like the Square D HGA36110SR ensures that faults are contained quickly across all phases. This minimizes the risk of damage to motors, transformers, and other high-load equipment, while providing safe isolation when maintenance or upgrades are needed. The 600 V rating makes it suitable for a wide range of commercial and industrial applications, where robust protection is essential.

Ideal use cases

• Protection for three-phase motor circuits in manufacturing, pumps, and conveyors
• Feeder protection inside commercial and industrial panelboards
• HVAC equipment and large compressor networks that run on 3-phase power
• Power distribution feeders in data centers and involving medium-sized loads

How it integrates

The HGA36110SR is designed to fit Square D panels and distribution gear, ensuring compatibility within established electrical setups. Its 3-pole configuration provides synchronized interruption across all phases, simplifying shutdowns and service work while maintaining system coordination.

What sets it apart

• Clear, dedicated protection for 3-phase circuits up to 600 V
• Dedicated 110 A protection level suitable for medium-load feeders and motors
• Part number HGA36110SR offers a precise, traceable component for panel inventories and replacements

Practical tips

• Verify that the HGA36110SR is compatible with your existing Square D panels before installation
• Keep a spare 110 A, 3-pole unit on hand for quick replacement during maintenance
• Have a qualified electrician install and commission the breaker to ensure proper alignment with your system’s protection scheme