Square D HRA36100U31XAABCSDYP 100A 3-Pole 600 V Circuit Breaker

Square D HRA36100U31XAABCSDYP is a purpose-built 100 A, three-pole circuit breaker designed for reliable protection of three-phase electrical feeds in commercial and light industrial applications. Rated for up to 600 V, this device safeguards motors, feeders, and other high‑current equipment, helping prevent damage from overloads and short circuits while fitting neatly into standard Square D panel boards.

Key specifications at a glance

• Current rating: 100 A
• Poles: 3 (three‑pole for three-phase circuits)
• Voltage rating: up to 600 V
• Part number: HRA36100U31XAABCSDYP
• Brand ecosystem: Square D

Why this 3‑pole, 600 V breaker stands out

• Designed for three‑phase power — ideal for distributing and protecting multi‑phase loads typical in commercial buildings, data centers, and small industrial setups.
• Robust current protection — a dedicated 100 A capacity provides dependable interruption for feeders and motor circuits, reducing downtime and equipment wear.
• Seamless Square D compatibility — built to integrate with Square D panel boards and enclosures, ensuring reliable fit, electrical continuity, and system compatibility within the Square D ecosystem.

Ideal use cases

• New or retrofit installations in offices, retail spaces, or light industrial facilities where three‑phase distribution is required
• Replacement or upgrade for aging panel components in compatible Square D systems
• Protection for three‑phase feeders feeding motors, compressors, pumps, and other heavy loads

How this breaker helps your facility

With the Square D HRA36100U31XAABCSDYP, you gain targeted protection for three‑phase circuits, helping to prevent cascading failures and equipment damage. The 600 V rating expands its versatility across commercial power distribution schemes, while the 100 A rating matches common feeder sizes found in many installations. By choosing a device from the Square D family, you also simplify maintenance, part sourcing, and panel compatibility, reducing service time during replacements or upgrades.

Installation and care notes

Ensure the breaker is installed by a qualified electrician and wired into a compatible Square D panel board. Follow all local electrical codes and manufacturer guidelines for torque and wiring practices. Regular visual inspections and periodic functional checks as part of your electrical maintenance routine can help verify uninterrupted protection for your critical loads.