Square D HDA36100U43XAABCSH 100A 3-Pole 600 V Circuit Breaker

Square D HDA36100U43XAABCSH is a rugged, high-capacity circuit breaker engineered for reliable protection of three-phase electrical systems. With a 100 A current rating, a 3-pole configuration, and a 600 V maximum rating, this device is purpose-built for demanding industrial and commercial environments where safeguarding motors, feeders, and critical equipment matters.

Key specifications at a glance

• Current rating: 100 A
• Poles: 3
• Voltage rating: 600 V
• Part number: HDA36100U43XAABCSH
• Brand line: Square D

Why this 3-pole, 600 V design is the right choice

For three-phase power systems, a 3-pole circuit breaker like the Square D HDA36100U43XAABCSH provides coordinated protection across all phases. The triple-pole arrangement helps ensure that, in the event of an overload or fault, all phases trip together, reducing the risk of phase imbalances that can damage motors and equipment. The 600 V rating makes this unit suitable for higher-voltage distribution tasks, from industrial controls to commercial machines, giving you a single, dependable solution for challenging electrical environments.

Ideal use cases

• Protection for three-phase motors in manufacturing lines, conveyors, and pumps
• Feeder protection in industrial panels and distribution boards
• HVAC and large equipment circuits in commercial facilities
• Power distribution points where reliable interruption across all phases is essential

What makes it stand out

Unlike single-pole or two-pole breakers used in limited configurations, this 3-pole model delivers synchronized protection across all three phases, helping you maintain system integrity under fault conditions. Its rugged construction is geared toward long-term reliability in environments where electrical demand is steady and safety-critical. The product is identifiable by the part number HDA36100U43XAABCSH, aligning with Square D’s trusted pedigree for distribution protection components.

Practical tips for selection, installation, and care

• Match this 3-pole, 600 V device to a compatible three-phase distribution panel or switchgear designed to handle 600 V operation and 100 A loads.
• Plan for motor loads that may experience inrush; ensure the breaker’s trip characteristics align with your motor control requirements.
• Consult your electrical engineer or licensed electrician to verify correct thermal and short-circuit protection settings for your specific installation.
• Store and handle the unit in a clean, dry environment to preserve performance and longevity before installation.

When you need trustworthy, phase-coordinated protection for three-phase circuits up to 100 A and 600 V, the Square D HDA36100U43XAABCSH stands out as a precise, purpose-built solution designed to keep systems running safely and efficiently.