Square D | KA361501021 | Circuit Breaker | 150A | 3-Pole | 600V

Square D KA361501021 Circuit Breaker: 150A, 3-Pole, 600V — a purpose-built protection device designed for demanding three-phase electrical systems. This 3-pole breaker delivers reliable overcurrent protection in industrial and commercial panels, helping to safeguard equipment, minimize downtime, and keep your operations running smoothly.

Key advantages that set this unit apart:

• Amperage and voltage you can trust: 150A maximum current with a 600V operating rating, ideal for guarding large motors, compressors, and other high-demand loads.
• Three-pole design for balanced protection: Provides coordinated protection across all three phases in three-phase systems, reducing the risk of phase imbalances and unexpected trips.
• Clear reference for compatibility: Part number KA361501021 is the definitive guide for retrofit, maintenance, and replacement projects. Use this reference to confirm fit with your Square D panels and assemblies.
• Maintenance-friendly and ready for retrofit: Designed for straightforward replacement in existing electrical infrastructure, helping you streamline upgrades and material planning.
• Durable, dependable construction: Built to withstand standard operating environments in commercial and industrial settings, delivering reliable protection when it matters most.

Who should consider this circuit breaker?

• Facilities performing panel retrofits or capacity upgrades that require a compatible 3-pole, 150A, 600V protection device.
• Maintenance teams stocking spare components for quick-field replacements to minimize downtime.
• Electrical engineers specifying replacement parts for legacy Square D installations that demand exact part references.
• Industrial environments with three-phase motors, conveyors, HVAC systems, and other high-load equipment needing robust overcurrent protection.

Practical use cases and benefits

• Retrofit projects: Swap in safely into existing equipment racks where the KA361501021 match is required, preserving system coordination and trip characteristics.
• Preventive protection: Use in panels supplying demanding loads to prevent overloads, reduce overheating, and extend component life.
• Spare for reliability: Keep a ready-to-install backup on hand for critical assemblies in production lines or data centers.
• Compliance-ready reference: Use the part number KA361501021 as the primary compatibility reference during documentation and procurement checks.

Installation and compatibility tips

• Always confirm fit and ratings before ordering; verify that your enclosure, bus stabs, and mounting arrangement align with the KA361501021 specifications.
• Use the part number KA361501021 as the primary reference when checking schematics, bill of materials, and panel documentation.
• Follow standard electrical safety procedures during installation, including de-energizing the system and isolating circuits before replacement.

In short, the Square D KA361501021 150A 3-Pole 600V circuit breaker is a deliberate choice for professionals who value precise compatibility, solid protection, and dependable performance in three-phase electrical systems. Whether you’re upgrading a panel, stocking up for maintenance, or replacing a worn-out breaker, this unit delivers the reliability and alignment you need to keep critical equipment protected and operating at peak efficiency.