Square D | HLF36150 | Circuit Breaker | 150A | 3-Pole | 600V

Meet the Square D HLF36150 Circuit Breaker: a genuine, install-ready solution for three-phase electrical systems that demand reliability, precise protection, and simple replacement. Engineered to match specific Square D panelboards and feeders, this 150A, 3-pole device handles up to 600V with clarity and confidence.

Key specifications

• Amperage: 150 A
• Poles: 3-Pole
• Voltage rating: 600 V
• Part reference: HLF36150

What makes it stand out

Unlike generic breakers, this model is a direct-fit Square D component designed for easy retrofits and replacements in compatible panels. Using the exact part number guarantees you're getting the correct trip characteristics and physical fit, minimizing downtime during service windows.

Ideal use cases

• Maintenance on three-phase distribution panels in commercial or light-industrial settings
• Retrofits to upgrade or repair gear where a 150 A, 3-pole, 600 V protection scheme is required
• Replacement in existing Square D installations that call for HLF36150 as the compatibility reference

Practical considerations and tips

Before ordering, confirm fit and ratings against the panel’s labeling and documentation. The part number HLF36150 is the most reliable reference for compatibility, ensuring you won’t mismatch pole count or voltage. If you’re unsure about the exact model, refer to your panel’s model tag and the manufacturer’s wiring diagrams to verify it's the correct 3-pole, 150 A, 600 V breaker for your circuit.

With this breaker in place, you gain dependable overload protection for your three-phase distribution, helping to safeguard motors, transformers, and control circuits. It’s a smart choice for technicians and facilities teams who value accurate specifications and proven performance.