Square D HGA36150U43XAABCSD 150A 3-Pole 600 V Circuit Breaker Potential Transformer

Meet the Square D HGA36150U43XAABCSD, a rugged 150 A, 3-pole, 600 V circuit breaker with an integrated potential transformer designed for demanding commercial and industrial power systems. This device combines dependable overcurrent protection with accurate voltage sensing, helping you safeguard equipment while simplifying control wiring.

Key features and value:

• Current rating: 150 A — suitable for protecting feeders and motor circuits in medium-size panels.
• Configuration: 3-pole construction for three-phase power distribution.
• Voltage rating: 600 V — appropriate for typical industrial electrical environments.
• Part number: HGA36150U43XAABCSD — precise identification for ordering, replacement, and warranty traceability.
• Integrated potential transformer: provides a ready source for voltage sensing, metering, and protective relay inputs, reducing external components and wiring complexity.

Why choose this design? In real-world installations, having a circuit breaker with an inherent potential transformer means you can monitor system voltage and respond to faults more quickly. The three-pole arrangement supports balanced protection across all phases, helping prevent single-phase faults from cascading through equipment.

Ideal use cases include:

• Industrial power panels and motor control centers requiring reliable 3-phase protection and voltage sensing.
• Commercial facilities with stringent protection and monitoring needs for critical loads and HVAC systems.
• New installations or retrofit projects where minimizing field wiring and sensing components saves time and reduces potential points of failure.

Practical tips for installation and optimization:

• Verify compatibility with your existing panel board architecture and bus assembly before installation.
• Route PT sensing lines and ensure secure, corrosion-free terminations to preserve accurate voltage readings.
• Document the part number and configuration for future service, spare parts, and warranty support to avoid confusion during maintenance.