Square D | HJL36100U31X | Circuit Breaker | 100A | 3-Pole | 600V | 25kA

In demanding industrial environments, protection and reliability go hand in hand. The Square D HJL36100U31X Circuit Breaker delivers precise 100 A protection in a robust 3-pole package, engineered for up to 600 V systems with a 25 kA short-circuit rating. Designed for maintenance, retrofit, and replacement projects, this breaker ensures your distribution network stays guarded against overloads and faults without compromising performance.

• Amperage: 100 A
• Poles: 3-Pole
• Voltage: 600 V
• Interrupting Capacity: 25 kA

Why this specific Square D breaker matters

The HJL36100U31X is more than a generic protection device. Its 3-pole configuration makes it ideal for three-phase feeders that power motors, conveyors, and large equipment in industrial settings. With a 600 V rating, it’s suitable for higher-voltage distribution networks, while the 25 kA interrupting capacity provides a meaningful safety margin against severe fault events. This combination translates to dependable shutdowns when needed and minimal nuisance trips in everyday operation.

Ideal use cases

• Maintenance, retrofit, or replacement in existing Square D panels or enclosures that specify the HJL36100U31X part family.
• Protection for three-phase motor feeders and other 3-phase loads in manufacturing, processing, or distribution environments.
• Spare or replacement stock for service fleets servicing industrial electrical distributions that require exact-specification breakers.

Important compatibility notes

To ensure safe, reliable operation, confirm fit and ratings before ordering. The part number HJL36100U31X is the most reliable reference for compatibility with your panel, enclosure, and wiring scheme. If your documentation or label specifies this exact part, you’re aligned for a straightforward replacement that preserves your original protection strategy.

Why choose Square D for this application

Square D is a long-standing standard in industrial electrical protection, known for consistency, widespread availability, and alignment with common panel and equipment specifications. The HJL36100U31X upholds that tradition, delivering predictable performance in critical power-distribution roles while simplifying service and maintenance with a familiar form factor and electrical characteristics.

Practical tips for use

• Keep records of panel and breaker documentation so future maintenance can quickly verify part compatibility.
• When replacing, inspect the surrounding wiring and terminals for wear or corrosion and address as needed to maintain a solid, safe connection.
• If you’re upgrading from a lower amperage or different pole configuration, plan for any feeder conductor and bus bar adjustments required by your panel model.