Square D | LIF26300 | Circuit Breaker | 300A | 2-Pole | 600V

Square D LIF26300 Circuit Breaker is a robust, high-capacity protection device designed for demanding 600V systems. With a 300A rating and 2-pole configuration, this breaker provides reliable, fast-acting overcurrent protection for heavy feeders and main circuits in commercial and industrial panels.

Key specifications

• Amperage: 300A
• Poles: 2-Pole
• Voltage: 600V
• Best reference for compatibility: Part number LIF26300
• Applications: Maintenance, retrofit, and replacement where matching specs are required

Why this matters: when protecting large feeders in 600V systems, a breaker that aligns exactly with the original specifications helps maintain panel performance, trip coordination, and overall electrical safety. The LIF26300 is specifically suited for scenarios where you’re replacing or upgrading without altering the panel’s protection scheme.

Why choose the LIF26300

• Precise compatibility: Designed to match Square D panels that require a 300A, 2-pole, 600V solution. Using the exact part number aids in preventing mismatches that can affect protection performance.
• Maintenance-friendly: A reliable option for servicing aging infrastructure or retrofitting existing panels to restore optimal protection without major panel changes.
• Durable and dependable protection for heavy-duty circuits: Ideal for feeders and critical loads that demand solid overcurrent protection in 600V environments.

Ideal use cases

• Replacing a failed or worn 300A, 2-pole breaker in a 600V system.
• Retrofit projects where exact spec alignment is essential to preserve safety and performance.
• Stocking service-ready units for teams that maintain Square D panels and need fast, compatible replacements.

Installation and compatibility tips

Before ordering, confirm fit and ratings for your specific panel. The part number LIF26300 is the best reference to ensure compatibility with your Square D installation. When planning replacement, verify that the panel accepts a 2-pole, 600V device rated for 300A and that the mounting and bus configurations align with the LIF26300 requirements.

Practical considerations

• Follow all applicable electrical codes and safety procedures when working with high-voltage equipment. Disconnect power and use appropriate PPE before handling breakers.
• Keep a spare LIF26300 on hand for proactive maintenance and faster service calls, reducing downtime in critical applications.
• Document the exact part number in your panel records to simplify future replacements and audits.