Square D HJL36050AA 36050A 3-Pole 600 V Circuit Breaker Potential Transformer

The Square D HJL36050AA 36050A 3-Pole 600 V Circuit Breaker Potential Transformer is engineered for demanding industrial environments where reliable, three-phase protection and precise voltage sensing matter. Built to handle higher fault currents and flush with integration capability for protection relays and metering, this unit keeps your electrical distribution safer and more monitorable.

Why this unit stands out

• Three-pole protection ensures all hot conductors trip together, preventing phase imbalance and reducing equipment damage during faults.
• 600 V voltage rating delivers robust performance across common industrial Power Distribution Systems (PDS) and motor loads.
• Integrated potential transformer considerations supports voltage sensing for protective relays and metering, enabling accurate monitoring without extra components.
• Specific interchangeability part number HJL36050AA is designed to align with compatible Square D panels and protection schemes, simplifying procurement and replacement.

Ideal use cases

This 3-pole 36050 A device is well-suited for industrial facilities, data centers, and manufacturing environments where reliable fault interruption across all phases is critical. Use it in panels feeding large motors, transformers, or switchgear that require precise voltage sensing for alarms, control circuits, and remote monitoring. Its potential transformer capability makes it an attractive option when you need accurate voltage data for protection relays or metering systems without adding separate equipment.

Practical benefits and outcomes

• minimizes electrical damage and downtime by isolating all three phases simultaneously during a fault.
• with integrated sensing pathways supports faster, more accurate relay tripping and system diagnostics.
• reduces the number of separate components in your protection chain, thanks to compatible transformer-sensing functionality.
• with Square D ecosystems helps maintain consistent performance and easier sourcing for replacement parts.

Technical snapshot

• Current rating: 36050 A
• Poles: 3
• Voltage rating: 600 V
• Part number: HJL36050AA
• Product type: Circuit Breaker with potential transformer considerations for voltage sensing

Installation and care (practical tips)

Before installation, confirm panel compatibility and follow all applicable electrical codes. Ensure secure mounting and proper torque on terminals, and verify that the protection and sensing pathways are configured to align with your protection scheme. If you’re upgrading from a lower-phase or lower-voltage device, plan for coordinated testing with your relays and metering equipment to confirm accurate voltage readings and trip behavior.