Square D HLL36030M71 - 30 A, 600 V, 3-Pole Circuit Breaker | AmpState

The Square D HLL36030M71 is a compact, 30 A, 600 V, 3-pole molded case circuit breaker designed to deliver reliable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Built for real-world electrical protection, this device is a dependable choice for both new installations and upgrades in today’s demanding electrical environments.

• Space-efficient, molded case design: Optimizes panel real estate so you can fit more circuits without crowding the enclosure.
• Thermal-magnetic trip unit: Combines thermal overload protection with magnetic short-circuit protection for stable, repeatable performance across varying loads and temperatures.
• 3-pole configuration: Provides balanced protection across three conductors, ideal for three-phase systems and compatible panel layouts.
• 600 V rated: Suitable for higher-voltage branch circuits, expanding protection options in commercial and light industrial applications.
• 30 A continuous rating: Precisely sized for typical circuit protections, helping prevent nuisance trips while guarding against faults.
• OEM panel compatibility: Designed to be used with matching Square D OEM load centers and panelboards for straightforward retrofits and replacements.
• Versatile applications: Well-suited for residential service upgrades, commercial lighting and receptacle circuits, and light industrial equipment protection.

Use cases include upgrading panelboards in small-to-midsize commercial spaces, retrofitting aging systems in light industrial facilities, or replacing a failed breaker in existing Square D installations. With its robust molded case construction and reliable trip mechanism, the HLL36030M71 helps reduce downtime by delivering predictable protection when it matters most—during overloads and short circuits.

Key specifications at a glance: Type: Thermal-magnetic molded case circuit breaker • Amperage: 30 A • Voltage: up to 600 V • Poles: 3 • Application: Branch circuit overcurrent and short-circuit protection

In practice, this breaker serves as a dependable backbone for safe electrical distribution in spaces where reliable protection, space efficiency, and easy compatibility with existing panel infrastructure are priorities. If you’re updating a panelboard or loading center and need a proven 3-pole, 30 A solution, the Square D HLL36030M71 delivers focused protection with straightforward integration.