Square D HDA36125UP 125A 3-Pole 600 V Circuit Breaker

Square D HDA36125UP 125A 3-Pole 600 V Circuit Breaker delivers reliable, three-phase protection for demanding electrical systems. With a 125-amp current rating and a three-pole design, it interrupts all live conductors in a 3‑phase circuit up to 600 volts, safeguarding equipment and reducing the risk of damage from overloads or faults.

• Part number: HDA36125UP
• Brand: Square D
• Current rating: 125 A
• Poles: 3
• Voltage rating: 600 V

Where this model shines:

• Ideal for three‑phase electrical distributions in industrial facilities, manufacturing lines, and large commercial installations that require dependable protection up to 125 amps.
• Well suited for main feeders and distribution panels where 3‑pole, 600 V protection ensures simultaneous disconnection of all phases, improving safety and system reliability.
• A precise replacement option in systems designed around Square D components, helping maintain consistency and compatibility across your panel lineup.

Why choose the Square D HDA36125UP in your electrical toolkit:

• Specific compatibility: This is a dedicated Square D solution with the exact 125 A, 3‑pole, 600 V specification, reducing guesswork during maintenance and upgrades.
• Clear protection for 3‑phase loads: The three‑pole configuration ensures all live conductors trip together, preventing unbalanced conditions and protecting motors, drives, and other 3‑phase equipment.
• Durable, industry‑grade construction: Built for demanding environments common in facilities and industrial spaces, helping sustain performance over time.

Practical tips for use:

• Verify that your panel or distribution system supports a 3‑pole, 125 A, 600 V device before installation.
• When replacing an existing breaker, confirm the Line/Load orientation and bus compatibility to ensure a smooth swap with the HDA36125UP.
• Follow all applicable electrical codes and safety practices during installation and testing. If in doubt, consult a licensed electrician.