Square D HDA36125SVYP 125A 3-Pole 600 V Circuit Breaker

Power distribution protection that you can rely on. The Square D HDA36125SVYP 125A 3-Pole 600 V Circuit Breaker is engineered to guard three-phase circuits, delivering fast, dependable interruption when overloads or faults occur. With a 125 A rating and a 600 V maximum, it’s designed for demanding industrial and commercial environments where safety and uptime matter.

Key specs

• Current rating: 125 A
• Poles: 3
• Voltage rating: 600 V
• Part number: HDA36125SVYP
• Brand: Square D

What problems it solves

In three-phase power networks, overcurrents can damage wiring insulation, trip motors, and trigger unplanned downtime. This circuit breaker is designed to trip under overloads and short circuits on systems up to 600 V, helping protect equipment, maintain safer operating conditions, and minimize costly interruptions. The 125 A capacity provides solid protection for mid-size feeders without sacrificing performance for startup surges common in industrial motors and equipment.

Why this model stands out

Designed for applications requiring robust, reliable three-pole protection, the HDA36125SVYP combines a dependable trip mechanism with compatibility within Square D’s distribution ecosystem. Its 125 A rating is a practical balance between protection and manageability for substantial loads, while the 600 V rating broadens its suitability for higher-voltage industrial installations. This isn’t a generic breaker—it’s a purpose-built solution for reliable 3-phase protection.

Ideal use cases

• Three-phase motor feeders in manufacturing lines and automation.
• Power distribution branches in facilities with 3-phase electrical systems.
• Protection for HVAC equipment, large pumps, and other industrial loads.
• Replacement part for Square D panelboards requiring a 125 A, 3-pole, 600 V device.

Installation and safety notes

Ensure the breaker is installed in a compatible Square D panelboard designed for 3-pole 600 V devices. Follow all relevant electrical codes and the manufacturer’s installation instructions. If you’re uncertain about panel compatibility or wiring, consult a licensed electrician to verify the correct part and safe mounting.

Care, maintenance, and lifecycle

Periodically inspect for signs of wear and ensure proper operation after faults. Replace per your maintenance schedule to preserve protection integrity. Using authentic parts like the HDA36125SVYP supports consistent performance and long-term reliability in your electrical system.