Square D BJA36045 - 45A, 3-Pole, Circuit Breaker

Introducing the Square D BJA36045 45A, 3-Pole Circuit Breaker—a compact, rugged protective device engineered for three-phase systems in industrial, commercial, and OEM environments. This breaker delivers reliable overcurrent protection where safe operation in distribution panels, switchboards, and control panels is critical.

Why the BJA36045 stands out

Designed for balanced protection across all three phases, this 45-amp, 3-pole circuit breaker helps prevent motor stalls, drive faults, and equipment damage during overload events. It integrates smoothly into three-phase electrical architectures, supporting consistent performance in demanding settings.

Key specifications

• Current rating: 45A
• Poles: 3-Pole
• Breaker type: Circuit Breaker
• Applications: panelboards, switchboards, control panels, motor control centers

Ideal applications

Perfect for industrial facilities, commercial installations, and OEM equipment where dependable protection and safe operation are essential. Whether you’re building a new distribution panel or upgrading an MCC, the BJA36045 provides dependable overload protection for critical three-phase loads.

Practical use cases

• New installations in manufacturing lines that require reliable three-phase protection
• Upgrading motor control centers or panelboards to enhance overload response
• Part of service and maintenance inventories as a ready, compatible spare

What this means for you

• Balanced three-phase protection reduces the risk of uneven phase loading and equipment stress
• Reliable, industry-standard performance supports uptime in critical processes
• Designed to fit into established Square D ecosystems and compatible panel configurations

Installation and care tips

Follow manufacturer guidelines and local electrical codes during installation. Ensure secure mounting and proper terminal torque, and perform regular checks on connections and surrounding components to maintain safe, reliable operation.