Square D | LHF26300 | Circuit Breaker | 300A | 2-Pole | 600V

Designed for heavy-duty electrical protection in commercial and industrial environments, the Square D LHF26300 circuit breaker delivers reliable 300-amp protection in a compact, two-pole package for up to 600 volts. Built to serve as a precise replacement, retrofit, or maintenance replacement, it integrates with existing Square D panels that require the exact part number for compatibility.

Key specifications

• Amperage: 300A
• Poles: 2-Pole
• Voltage rating: 600V
• Part number: LHF26300

The LHF26300 is specifically suited for tasks where you need to safely interrupt and isolate high-current circuits. It ensures both conductors disconnect simultaneously, protecting equipment and personnel during overcurrent events. This makes it ideal for feeders and main circuits in libraries, warehouses, manufacturing floors, and data centers where uptime matters.

Why this unit stands out

• Exact fit for applications requiring a 300A, 2-pole, 600V protection device from Square D
• Genuine Square D construction ensures consistent performance and compatibility with existing Square D panels
• Designed for straightforward replacement in retrofit projects, minimizing panel modification

Use cases and practical scenarios

- Maintenance: Replace aging breakers to reduce nuisance trips and maintain stable protection for critical circuits.

- Retrofit: Upgrade legacy panel sections to handle higher loads without reconfiguring the entire electrical system.

- Replacement: Restore original protection levels after component wear or recall adjustments, using a direct part-number match.

Ordering and compatibility tips

• Always confirm fit and ratings before ordering. The part number LHF26300 is the most reliable reference for compatibility.
• Verify amperage (300A), number of poles (2), and voltage rating (600V) align with your panel requirements.
• Check the enclosure and mounting style to ensure a clean, secure installation with no wiring or bus-bar conflicts.