Square D HDA36150UKYP 150A 3-Pole 600 V Circuit Breaker

Engineered by Square D for demanding industrial environments, the HDA36150UKYP is a robust 150 A, three-pole circuit breaker designed to protect three‑phase feeders up to 600 V. With a trusted Square D pedigree, this unit delivers dependable overcurrent protection for commercial and light industrial electrical systems where reliable disconnects and precise protection are essential.

Key specifications at a glance

• Current rating: 150 A
• Poles: 3
• Voltage rating: 600 V
• Part number: HDA36150UKYP
• Brand: Square D (Schneider Electric)

Why this 3-pole breaker stands out

Three-pole protection ensures all phases are switched off together, reducing the risk of phase imbalances and protecting motors, pumps, and other three-phase equipment from overcurrent events. The HDA36150UKYP is purpose-built for installations where high-voltage (up to 600 V) distribution requires reliable, repeatable trip performance and clear, unambiguous isolation.

Where it fits best

Ideal for use in compatible Square D panels, switchgear, and distribution boards that require a 150 A three-phase protective device. This breaker is a solid choice for panelboard upgrades, retrofits, and new builds in industrial and commercial settings where three-phase service is standard.

Practical use cases

• Protecting three-phase motors, compressors, and conveyors in manufacturing lines
• Distributing power to industrial equipment in warehouses and facilities with 600 V systems
• Retrofits and replacements in established Square D installation footprints for consistent performance

How it helps you run safely and efficiently

With precise current handling and a reliable interruption mechanism, this circuit breaker helps minimize downtime by quickly isolating faulted circuits, preserving uptime and safeguarding personnel and equipment. Its compatibility with Square D ecosystems means easier installation, coordinated protection, and straightforward maintenance within existing panels.

Installation and care tips

Install the HDA36150UKYP in a compatible Square D enclosure or panelboard designed for 600 V, 3‑pole protection. Ensure the panel’s labeling and circuit protection plan reflect the 150 A rating and three-phase configuration to maintain clear, compliant electrical distribution.