Square D HGA36100U43XAABCSK 100A 3-Pole 600 V Circuit Breaker

The Square D HGA36100U43XAABCSK is a purpose-built circuit breaker designed to safeguard three‑phase electrical systems with uncompromising reliability. Rated at 100 A and configured as a 3‑pole device for up to 600 V, this breaker is a trusted choice for demanding industrial and commercial panels where protection of motors, feeders, and distribution circuits is critical.

Why this breaker matters

In three‑phase environments, balanced protection across all conductors is non‑negotiable. The HGA36100U43XAABCSK disconnects all three phases during a fault, preventing residual energy from damaging equipment or wiring. Its 600 V rating makes it suitable for a wide range of industrial applications, from motor control centers to heavy machinery feeds, ensuring safe and timely interruption when overloads or short circuits occur.

Key features and benefits

• 100 A current rating provides robust protection for demanding loads without nuisance tripping in normal operating conditions.
• 3-pole configuration ensures simultaneous disconnection of all three phases, enhancing safety and reducing the risk of phase imbalance during faults.
• 600 V maximum voltage rating makes it compatible with a broad spectrum of industrial equipment and distribution panels that run on higher-voltage three‑phase systems.
• Square D reliability backed by decades of industry experience in electrical protection, helping to minimize downtime and maintenance headaches.
• Panel and enclosure compatibility designed to fit Square D distribution panels and standard enclosures, delivering predictable trip characteristics and consistent performance.

Ideal use cases

• Three‑phase motor circuits in manufacturing lines, compressors, and pumps.
• HVAC and large equipment feeds in commercial facilities.
• Distribution panels where a precise 100 A protection level is needed for safe, reliable operation.
• Panel replacements or upgrades that require an exact part number to match existing wiring diagrams and trip curves.

How it helps your operation

By providing reliable, predictable interruption when faults occur, this breaker protects wiring insulation, downstream equipment, and overall system integrity. Its solid construction supports long service life in challenging environments, reducing the frequency of replacements and maintenance checks. For engineers and technicians, using the exact part number HGA36100U43XAABCSK ensures installation accuracy and traceable compatibility with your electrical schematics.

Who should consider this part

• Electrical contractors performing panel replacements or upgrades in industrial settings.
• Facility managers seeking dependable protection for 3‑phase power distribution.
• OEMs integrating durable, high‑current protection into equipment running on 600 V three‑phase systems.

Choose the Square D HGA36100U43XAABCSK 100 A 3‑Pole 600 V Circuit Breaker when you need proven, phase-balanced protection for demanding three‑phase circuits, delivered by a trusted brand with a long history of electrical reliability.