Square D | LHL36300V | Circuit Breaker | 300A | 3-Pole | 36300V

The Square D LHL36300V circuit breaker is designed for demanding industrial power systems where reliability and exact compatibility matter. This 3-pole, 300A breaker protects three-phase feeders with a voltage rating of 36300V, making it a precise match for high-demand installations. The part number LHL36300V is the best reference for compatibility, and it’s ideal for maintenance, retrofit, and replacement projects that require identical specs.

Key benefits and what makes it unique

• Exact spec match: The specific part number LHL36300V ensures it fits panels and distribution systems that rely on Square D’s LHL-series breakers.
• Three-pole design for three-phase systems: Protects all three phases and coordinates with downstream devices for balanced, reliable protection.
• High-current capability: 300A rating supports heavy-load feeders common in industrial environments.
• Voltage capacity: Rated for 36300V, enabling safe interruption of high-voltage distributions in compatible setups.
• Maintenance-friendly replacement: Quick swap-in when service downtime is available, minimizing panel downtime.
• Retrofit-ready: A practical choice when modernizing legacy panels that require exact form-factor and ratings.

Ideal use cases

Use this breaker in maintenance projects, retrofit upgrades, or replacement jobs where you need the exact Square D LHL36300V specifications. It’s particularly well-suited for facilities with three-phase power distribution, heavy equipment loads, and panels designed to accept LHL-series breakers. Having the correct part number on hand reduces risk of incompatibility and helps you avoid last-minute field corrections.

How to verify fit and ordering confidence

Before ordering, confirm fit and ratings by cross-referencing the following:

• Panel type and compatibility with LHL-series breakers
• Amperage: 300A
• Poles: 3-Pole (three-phase protection)
• Voltage rating: 36300V
• Preferred reference: part number LHL36300V

Why choose Square D for this application?

Choosing an OEM like Square D for your protection scheme helps ensure coordinated protection across your distribution network. With the LHL36300V you’re not just buying a breaker you’re investing in a proven compatibility framework that aligns with Square D panels and downstream devices, minimizing surprises during installation and service.