Square D | LLL36400U33X | Circuit Breaker | 3-Pole

Square D LLL36400U33X is a 3-pole circuit breaker designed for reliability in maintenance, retrofit, and replacement projects within Square D panel systems. The specific part number LLL36400U33X is the best reference to verify compatibility, so always confirm fit and ratings before ordering.

Designed for 3-Phase Protection

This three-pole breaker provides protection for 3-phase electrical circuits, making it ideal for commercial and industrial panel setups that require coordinated protection across all phases. Use in service renovations or panel upgrades where a matching Square D device is needed.

Key Details

• Poles: 3-Pole
• Part number: LLL36400U33X
• Brand: Square D
• For maintenance, retrofit, and replacement—verify compatibility with your panel before purchase.

Why Choose This LLL36400U33X 3-Pole Breaker

• Part-number-driven compatibility: Rely on LLL36400U33X as the primary reference to ensure the breaker matches your Square D panel’s specifications.
• Targeted use cases: Perfect for upgrades in existing Square D installations where a precise 3-pole device is required.
• Reliability and availability: A genuine Square D component designed to integrate with compatible panels and protect 3-phase circuits.

Compatibility, Installation & Best Practices

Before you install, double-check that the panel and circuit ratings align with the device. This product is intended for Square D panels and related equipment; the best reference for compatibility remains the LLL36400U33X part number. If you’re unsure, consult your panel documentation and follow lockout/tagout safety procedures during replacement.

Practical Use Scenarios

• Upgrading an older three-phase panel to contemporary protection with a matching 3-pole breaker.
• Replacing a failed breaker in a Square D system with a direct part-number match to minimize compatibility risk.
• Performing routine maintenance or panel retrofits where a 3-pole device is required to protect multi-phase loads such as motors, compressors, or three-phase equipment.

Secure your 3-pole protection with confidence by selecting the Square D LLL36400U33X when compatibility is defined by part number. Always verify fit and ratings to ensure safe, reliable operation of your three-phase electrical system.