Square D HJA36020YP 20A 3-Pole 600 V Circuit Breaker

Meet the Square D HJA36020YP 20A 3-Pole 600 V Circuit Breaker — a precise, reliable solution for safeguarding three-phase electrical systems up to 600 volts. Built to meet the demands of modern panels, this breaker combines a 20 amp per-pole rating with a robust three-pole configuration for comprehensive protection across all phases.

Part number HJA36020YP is your clear identifier for replacement and compatibility within Square D installations. Designed to fit panels and enclosure setups that accept this form factor, it delivers consistent performance in demanding environments where motor drives, pumps, and three-phase equipment require dependable overcurrent protection.

Key specifications

• Current rating: 20 A
• Poles: 3
• Voltage rating: 600 V
• Part number: HJA36020YP

Why choose this 3-Pole breaker for your three-phase systems

This 3-pole design protects three-phase circuits by interrupting all lines simultaneously when an overcurrent event occurs. That means fewer fault conditions slip through and safer, more predictable shutoffs for equipment like industrial motors and HVAC systems. With the Square D build, you gain consistent trip reliability and straightforward replacement in established electrical configurations.

Ideal use cases

• Three-phase motor circuits in commercial or light industrial panels
• Industrial machinery, pumps, and compressors operating on up to 600 V
• Power distribution nodes in 600 V electrical systems requiring coordinated phase protection

Practical considerations and tips

• Confirm panel compatibility for the Square D HJA36020YP form factor before installation.
• Ensure the connected load does not exceed 20 A per pole to maintain proper protection.
• Keep a spare HJA36020YP on hand for maintenance or field replacements, reducing downtime.
• Follow standard safety procedures and consult your panel labeling for installation instructions and rating confirmations.

For those maintaining reliable three-phase infrastructure, the Square D HJA36020YP 20A 3-Pole 600 V Circuit Breaker delivers targeted protection, straightforward replacement, and compatibility with established Square D systems. It’s the practical, purpose-built choice for safeguarding 600 V, three-phase equipment and keeping critical operations running smoothly.