Square D HJA36125SR 125A 3-Pole 600 V Circuit Breaker

Meet the Square D HJA36125SR, a genuine Square D circuit breaker crafted to protect and stabilize three‑phase electrical systems. With a robust 125 A current rating, a 3‑pole configuration, and a 600 V maximum rating, this OEM replacement part is designed to fit Square D panels and distribution gear where dependable protection is non‑negotiable.

Key specifications at a glance

• Brand: Square D
• Part Number: HJA36125SR
• Current rating: 125 A
• Poles: 3
• Voltage rating: 600 V

Ideal applications

Designed for three‑phase distribution, the HJA36125SR is well suited for commercial and light industrial environments where 3‑pole protection is required. Use it as a reliable replacement part in compatible Square D panels and gear to maintain safe, continuous operation for motor loads, processing equipment, conveyors, and other three‑phase circuits up to 600 V.

Why choose a genuine Square D replacement?

• OEM fit and compatibility: Specifically engineered to match Square D panels, ensuring proper mounting, electrical clearance, and performance.
• Consistent protection for 3‑phase systems: The 3‑pole design provides balanced protection across all three conductors in your three‑phase distribution.
• Reliability you can count on: As an authentic replacement part, it maintains the trusted protection profile you expect from Square D products.

Practical notes for installation and use

Verify that your panel or distribution setup accepts the HJA36125SR and that the load characteristics align with a 125 A, 3‑pole, 600 V circuit breaker. For optimal performance, ensure the switchgear is de‑energized during replacement and consult your panel’s documentation for proper installation procedures. This part is intended as a replacement component for compatible Square D systems that require the HJA36125SR specification.