Square D HJA36100U44XAABCSJ 100A 3-Pole 600 V Circuit Breaker

Designed by Square D for demanding three‑phase power systems, the HJA36100U44XAABCSJ is a 100 A, 3‑pole circuit breaker engineered to protect critical equipment in circuits up to 600 V. This precise part number—HJA36100U44XAABCSJ—ensures you’re selecting the exact replacement needed for reliable protection in industrial and commercial panels.

Why this 3‑pole 100 A circuit breaker stands out

• Three‑phase protection built for all three phases in 3‑phase networks, helping prevent uneven loading and phase-to-phase faults.
• Clear, trusted rating 100 A current capacity makes it ideal for feeder lines, motor circuits, and distribution paths where stable protection is essential.
• 600 V maximum voltage capability covers a wide range of industrial and commercial applications, delivering reliable interruption for higher‑voltage systems.
• Brand reliability from Square D, a long‑standing standard in electrical protection, offering consistency and predictable performance across panels and installations.
• Exact part identification with part number HJA36100U44XAABCSJ for easy ordering, stocking, and maintenance workflows.

Ideal use cases

• Three‑phase motor feeders and control circuits in manufacturing facilities
• Power distribution and protection in commercial electrical rooms and panel boards
• HVAC systems, pumps, conveyors, and other equipment that rely on balanced three‑phase power
• Spare parts stocking for maintenance teams who require precise, compatible Square D components

Practical installation and maintenance notes

• Ensure the circuit breaker matches your panel’s design and is appropriate for three‑phase circuits up to 600 V.
• Follow standard electrical codes and manufacturer guidelines during replacement or installation to maintain system safety and reliability.
• Store and stock the exact part number (HJA36100U44XAABCSJ) to minimize downtime and ensure compatibility with existing panels and accessories.

For professionals seeking dependable three‑phase protection with a proven track record, the Square D HJA36100U44XAABCSJ 100A 3‑Pole 600 V circuit breaker delivers precise protection, straightforward replacement, and enduring performance in demanding electrical environments.