Square D HDA36100U43XAABCSJYP 100A 600 V Circuit Breaker

Meet the Square D HDA36100U43XAABCSJYP, a high-capacity circuit breaker engineered for demanding commercial and industrial electrical installations. With a 100 A current rating and a 600 V maximum voltage, this device delivers precise overcurrent protection where it matters most, helping to prevent damage to wiring, equipment, and panels.

Key specifications

• Part Number: HDA36100U43XAABCSJYP
• Current rating: 100 A
• Voltage rating: 600 V
• Brand/Series: Square D HDA family
• Protection type: Overcurrent protection for branch circuits and feeders

What makes it the right choice

Designed to fit Square D panels and enclosures that accept HDA-series devices, this breaker provides reliable, predictable trip behavior in the event of overloads or faults. The 100 A rating makes it suitable for mid-to-high-load circuits, while the 600 V rating supports use in both low- and high-voltage commercial systems according to your facility's needs.

Ideal use cases

• Commercial electrical panels serving office, retail, or light-industrial spaces with multiple high-draw circuits.
• Industrial control panels where a rugged 100 A protection point is required.
• Panel upgrades or replacements where maintaining brand consistency with Square D components is important.

Installation and safety considerations

• Electrical work should be performed by a licensed electrician following NEC guidelines and local codes.
• Check panel labeling to ensure compatibility with HDA-series breakers before replacement.
• Handle with care to avoid arcing and ensure proper torque on terminal connections as per manufacturer specs.

Maintenance and longevity tips

Keep connections clean and free of corrosion, monitor for signs of wear, and replace if the device shows signs of damage or if the panel configuration changes. Regular inspection helps maintain reliable protection across your electrical system.

Secure this 100 A, 600 V Square D breaker today to safeguard your circuits and maintain smooth operation of your electrical infrastructure.