Square D HRL36100U31X is a dependable 100 A, 3-pole, 600 V circuit breaker designed for everyday electrical work. Built to protect panelboards, load centers, and electrical distribution systems, this unit is a solid choice for retrofit projects and ongoing maintenance where keeping the same part number matters. Why this breaker stands out for real-world use
- Consistent part number for retrofit and maintenance planning: When you’re replacing or stocking spare parts, using a breaker with a stable part number reduces compatibility guesswork and project delays.
- Robust three-pole design for three-phase systems: The 3-pole configuration supports common 3-phase installations up to 600 V, providing reliable circuit protection across feeders and distribution paths.
- 100 A capacity for demanding circuits: Ideal for safeguarding mid-to-high current branches in commercial or light industrial environments, while fitting into standard Square D panelboard footprints.
- Ready availability from AmpState: A trusted source for Square D components, with support to confirm fit and compatibility when you’re integrating with existing panels or upgrading distribution layouts. Key specifications at a glance
- Amperage: 100 A
- Poles: 3
- Voltage rating: 600 V
- Part Number: HRL36100U31X
- Manufacturer: Square D
- Product Type: Circuit Breaker Ideal use cases and who benefits
- Retrofit projects where panel compatibility and part-number stability are crucial
- Spare-part stock for maintenance teams that service Square D panelboards and load centers
- Upgrades or replacements in 3-phase electrical distributions that require reliable protection up to 600 V
- Facilities managers and electricians who prioritize long-term availability and straightforward sourcing How this compares to alternatives (practical considerations)
- Designed for compatibility with Square D panelboards and distribution systems, reducing the risk of mismatched trip curves or mounting issues common with generic substitutes.
- A focused, high-reliability option for customers who need a consistent part number across multiple sites and long-term maintenance cycles. Practical tips for use and installation
- Verify that your system voltage and panel type align with a 600 V, 3-pole breaker before installation.
- Keep a spare HRL36100U31X on-hand for planned maintenance to minimize downtime during light or routine service.
- When in doubt about fit, reach out to AmpState for compatibility confirmation to ensure a seamless replacement. Order with confidence from AmpState and secure dependable circuit protection with the Square D HRL36100U31X. If you need help matching a part number or confirming compatibility, just send us a message and we’ll help you confirm fit.