Westhinghouse HKA3150 - 150A, 3-Pole, Circuit Breaker

Westhinghouse HKA3150 is a rugged 150A, 3-Pole circuit breaker designed to deliver dependable overcurrent protection in demanding electrical environments. Its three-pole configuration provides true three-phase coverage, making it ideal for large motors, HVAC equipment, and distribution circuits in panelboards, switchboards, and control panels.

Designed for industrial, commercial, and OEM applications, the HKA3150 helps prevent equipment damage and unplanned downtime by interrupting fault current quickly and safely. The 150A rating ensures it can handle substantial load while providing precise tripping behavior to protect conductors and devices downstream.

Key benefits

• Three-Phase protection: 3-Pole design coordinates with three-phase systems and motor controllers, reducing risk to equipment during faults.
• High-load capability: 150A rating supports large distribution circuits and motor feeders without excessive nuisance trips.
• Versatile installation: Compatible with panelboards, switchboards, and control panels across industrial and commercial settings.
• OEM-friendly: Suitable for integration into customized electrical assemblies and equipment builds.

Why choose this over generic breakers

Compared to single- or two-pole devices, the HKA3150 provides robust three-phase protection, which is essential for balanced fault current interruption in motor-driven loads. With its dedicated three-pole design, you gain reliable coordination with motor starters and protective relays, helping you maintain uptime and protect expensive equipment.

Practical tips for use:

• Plan protection for three-phase feeders feeding large motors or transformer banks; place the HKA3150 at the origin of the circuit to maximize protection.
• Ensure your panelboards or switchboards are rated for 150A continuous operation and compatible with 3-Pole breakers of this style.
• Regularly verify trip characteristics and maintenance intervals per your control panel's maintenance plan to minimize unexpected trips.