Square D | LHL3640033M | Circuit Breaker | 400A | 3-Pole | 600V

The Square D LHL3640033M circuit breaker is a precise, OEM-matched protection device designed for maintenance, retrofit, and replacement projects in 600V systems. With a robust 400A capacity and a 3-pole configuration, this unit delivers reliable protection where exact specifications matter most.

Key specifications

• Amperage: 400A
• Poles: 3-Pole
• Voltage: 600V

Why this matters

In industrial and commercial electrical distributions, using the exact part reference LHL3640033M minimizes compatibility risk, preserves protective coordination, and reduces downtime during service work. Because this breaker is specified to match the original equipment, it enables a straightforward, near-seamless replacement or retrofit with confidence in electrical safety and system performance.

Ideal use cases

• Maintenance: replace aging or failed 3-pole breakers in 600V circuits without altering panel wiring or protection schemes.
• Retrofit: upgrade or restore protection in legacy Square D installations that require a precise 400A, 3-pole, 600V unit.
• Replacement: swap in when an OEM-referenced part is needed to keep systems compliant and documented.

How to verify compatibility

Always confirm fit and ratings before ordering. The part number—LHL3640033M—is the best reference for compatibility with your panel and protection scheme, ensuring you maintain proper trip characteristics and electrical safety.

Practical guidance for installation and ongoing reliability

• Cross-check your panel labeling against the LHL3640033M specification to ensure exact match.
• Store spare units with other OEM-referenced breakers to simplify future replacements and audits.
• When installing, follow standard electrical safety practices and refer to your panel’s documentation for torque and termination details.
• Document the replacement with the part number to support future maintenance and service records.

Choose the Square D LHL3640033M for a purpose-built, OEM-referenced solution that keeps 600V electrical distributions protected, compliant, and ready for reliable operation.