Square D | PGA36120U31A | Circuit Breaker | 31A | 3-Pole | 600V

Square D PGA36120U31A Circuit Breaker is a precise, three-pole protective device designed for maintenance, retrofit, and replacement projects where exact specifications matter. With a 31 A rating and a 600 V capacity, this breaker integrates smoothly with Square D panels, preserving protection characteristics and panel coordination for reliable long-term performance.

Key specifications

• Amperage: 31 A
• Poles: 3-Pole
• Voltage rating: 600 V
• Part reference: PGA36120U31A — the primary compatibility reference

Important: Confirm fit and ratings before ordering. Use PGA36120U31A as the best reference for compatibility with your equipment and panel schedule.

Why this Square D breaker stands out

• Precise fit for matching specs: A 31 A, 3-Pole, 600 V design tailored to slot into compatible Square D distribution panels and switchgear without modification.
• Reliable 3-phase protection: Safeguards three live conductors simultaneously, ideal for 3-phase motors and load centers in industrial and commercial settings.
• Seamless retrofit and replacement: A straightforward upgrade or replacement option that maintains panel coordination and trip characteristics.
• Clear compatibility reference: The PGA36120U31A part number serves as a definitive cross-check across inventories and documentation.

Ideal use cases

This 31 A, 3-pole, 600 V circuit breaker is well-suited for:

• Maintenance of existing Square D panels and distribution systems requiring a 31 A, 3-pole protection at 600 V.
• Retrofit projects where a direct 3-phase, 600 V protective device is needed to match original equipment specifications.
• Replacement of aging breakers in industrial control panels, machine rooms, or commercial electrical rooms that operate on three-phase power.

Practical considerations

• Verify the panel rating and bus configuration to ensure full compatibility with PGA36120U31A before purchase.
• Keep the part number handy as the most reliable reference for cross-checking with your documentation.
• Follow your panel manufacturer guidelines for installation and clamping practices to ensure secure electrical contact.

Choosing Square D PGA36120U31A means aligning with a trusted protection solution that supports consistent electrical protection across your three-phase system, minimizes downtime during replacements, and preserves your system’s protective strategy.