Square D FA36050 - 50A 3 Pole Molded Case Circuit Breaker

The Square D FA36050 is a 50-Amp, 3-pole molded case circuit breaker (MCCB) engineered to provide precise overcurrent and short-circuit protection within electrical distribution networks. This F-frame breaker acts as a critical safety barrier, shielding downstream equipment from electrical faults and thermal damage while maintaining system stability in demanding environments. By utilizing precision-calibrated internal components, the FA36050 preserves electrical integrity across diverse power infrastructures.

Dual-Action Thermal-Magnetic Protection

The Square D FA36050 employs a sophisticated thermal-magnetic tripping mechanism to address different types of electrical faults. The thermal element monitors persistent overcurrent conditions, responding to gradual heat buildup that could compromise wire insulation. Simultaneously, the magnetic component provides an instantaneous trip response during high-level short circuits. This dual-action unit ensures comprehensive protection for three-phase electrical loads, supporting operational safety in systems with voltage requirements up to 600VAC.

Robust F-Frame Design and Construction

This molded case circuit breaker features the standard Square D F-frame architecture, which offers a compact footprint to maximize space efficiency within electrical panels and switchboards. The outer housing is constructed from high-strength insulating materials that protect internal mechanical parts from environmental contaminants and physical wear. The robust build quality ensures long-term reliability during repeated switching operations, making it a dependable component for both new installations and legacy system maintenance.

Key Features and Operational Benefits

• Reliable 50A Continuous Current Rating: Supports consistent power delivery for mid-range industrial and commercial branch circuits.
• Three-Pole Configuration: Provides simultaneous protection and switching for all three phases of an electrical system.
• Pressure Plate Terminations: Ensures secure, high-integrity wire connections that minimize electrical resistance and reduce the risk of terminal overheating.
• Visual Status Indication: Includes a three-position toggle handle (On, Off, Tripped) for immediate identification of the circuit state during troubleshooting.
• High Interrupting Capacity: Designed to safely clear faults within its rated voltage parameters, preventing damage to the broader electrical distribution system.

Industrial and Commercial Applications

The Square D FA36050 is optimized for integration into power distribution centers, motor control centers, and various panelboard configurations. It is specifically suited for the following use cases:

• Manufacturing Machinery: Protects industrial equipment and motors requiring 50A three-phase power supply.
• Commercial HVAC Systems: Serves as dedicated branch circuit protection for large-scale heating, ventilation, and air conditioning units.
• Infrastructure Upgrades: Functions as a direct replacement or expansion component for existing Square D F-frame installations.
• OEM Panel Building: Integrates into custom control panels where reliable, UL-certified circuit protection is a primary design requirement.

Compliance and Safety Standards

Every Square D FA36050 breaker adheres to the strict manufacturing protocols of Schneider Electric. This MCCB is UL listed and CSA certified, ensuring full compliance with North American electrical codes and safety regulations. The precision-engineered trip settings reduce the likelihood of nuisance tripping, maintaining maximum uptime for critical assets while providing a high level of safety for personnel and infrastructure.