Square D HGA36125SK 125A 3-Pole 600 V Circuit Breaker Potential Transformer

Square D HGA36125SK 125A 3-Pole 600 V Circuit Breaker is a robust protection device built for demanding three-phase power systems. With a 125 A continuous rating and a 600 V maximum, this model delivers dependable overcurrent protection for distribution panels, motor circuits, and feeders in industrial and commercial facilities. The HGA36125SK part number identifies a trusted Square D solution designed for straightforward integration into both existing installations and new builds.

Key specifications

• Model: HGA36125SK
• Current rating: 125 A
• Poles: 3
• Voltage rating: 600 V
• Brand: Square D

Why choose Square D HGA36125SK

• Three-pole design provides balanced protection across all phases, helping safeguard three-phase equipment from overloads and faults.
• 600 V rating equips this breaker for common industrial distribution applications, offering reliable fault interruption in higher-voltage environments.
• Part of Square D’s trusted line, ensuring compatibility with standard panels, wiring schemes, and field service practices.
• Clear, straightforward replacement option for compatible Square D installations, supporting efficient maintenance and system uptime.

Ideal use cases

• Protection for three-phase motor feeders in manufacturing and processing facilities.
• Distribution protection for panelboards and switchgear in commercial buildings, warehouses, and data centers.
• Main and branch circuit protection in systems that require reliable 3-phase safeguarding at up to 600 V.

Installation and compatibility

Designed to integrate with standard Square D panels and distribution systems, the HGA36125SK assumes a conventional 3‑pole form factor suitable for 3-phase wiring. When upgrading or replacing breakers, confirm panel compatibility and ensure correct wiring to maintain proper phase connections and safe operation. This model is a practical choice for projects seeking a proven Square D protection solution with a familiar interface for maintenance teams.