Square D | MHP36900V | Circuit Breaker | 900A | 3-Pole | 36900V

Meet the Square D MHP36900V circuit breaker—a purpose-built solution for high-demand, three-phase power systems. With a 900A rating across 3 poles and an impressive voltage class of up to 36900V, this device is designed for maintenance, retrofit, and replacement projects where exact specifications matter and downtime isn’t an option.

Key specifications at a glance

• Amperage: 900A
• Poles: 3-Pole
• Voltage: up to 36900V (36.9 kV)

Why this model stands out

• The MHP36900V is designed to slot into established Square D architectures, making it a reliable choice for panel retrofits and modernization projects.
• Three-pole configuration for balanced power: A true 3-phase breaker that supports evenly distributed current across phases, reducing the risk of uneven loading and faults.
• High-voltage capability: Rated for operation at substantial voltage levels, enabling it to protect large industrial circuits and equipment safely.
• Best reference for compatibility: When sourcing replacement parts, the part number MHP36900V is the most dependable reference to ensure a proper fit and electrical ratings.

Ideal use cases

• Maintenance and replacement for aging or failed high-current breakers in industrial facilities.
• Retrofit projects where existing gear requires a precise 3-pole, 900A, high-voltage solution.
• New or upgraded power distribution setups in facilities with three-phase loads and stringent voltage requirements.

Fit, compatibility, and ordering tips

Before placing an order, verify that your panel and system are compatible with a 900A, 3-pole device rated up to 36.9 kV. The MHP36900V part number is the clearest reference for matching panels, accessories, and installation kits. If you’re replacing an existing unit, cross-check the line-side and load-side terminations, mounting footprint, and any frame or accessory compatibility in your panel’s documentation.

Practical installation and maintenance notes

• Consult a licensed electrician to confirm voltage class, current rating, and panel compatibility before installation.
• Follow all local electrical codes and manufacturer guidelines for safe replacement, torque specifications, and terminations.
• Schedule periodic inspections of connections and enclosure integrity to maintain performance and safety in high-current environments.