Square D | HGF36045 | Circuit Breaker | 45A | 3-Pole

Square D HGF36045 45A 3-Pole Circuit Breaker is a durable, trusted protection device built for demanding electrical systems. Designed for maintenance, retrofit, and replacement, this 3-pole breaker delivers reliable overcurrent protection for 3-phase circuits.

Key specifications

• Amperage: 45A
• Poles: 3-Pole
• Part number: HGF36045

Compatibility reminder: Confirm fit and ratings before ordering. The part number is the best reference for matching your panel and application.

What problems does it solve?

Whether you're performing a retrofit to bring an older Square D panel up to current safety standards, replacing a worn breaker, or maintaining critical equipment, this 3-pole 45A breaker protects three-phase loads from overcurrent. It's well-suited for motor circuits, compressors, pumps, and other industrial or commercial equipment that rely on stable 3-phase protection.

Why choose this Square D breaker?

• Brand-backed reliability from Square D—well-known for consistent trip performance and compatibility within Square D panel ecosystems.
• Precise replacement identity with part number HGF36045, minimizing the risk of mismatches in retrofit projects.
• Designed for maintenance, retrofit, and replacement tasks, not just new installations, helping extend panel life and uptime.

Practical tips

• Before purchase, verify that your panel label lists HGF36045 or indicates compatibility with 3-pole 45A breakers of this form factor.
• Keep a spare for essential service calls to reduce downtime during motor or equipment failures.