Square D HJA36070SV 70A 3-Pole 600 V Circuit Breaker

The Square D HJA36070SV 70A 3-Pole 600 V circuit breaker is built to protect demanding three-phase electrical systems with precision and reliability. This part, HJA36070SV, is tailored for environments where steady power delivery and robust protection are essential, helping keep motors, drives, and other high‑load equipment safe from overloads and faults.

Key specifications at a glance

• Current rating: 70 A
• Poles: 3
• Voltage rating: 600 V
• Part number: HJA36070SV (Square D)

Why this 70A, 3-Pole, 600V breaker matters

Designed for three-phase power distribution, this breaker safeguards all three lines simultaneously, delivering balanced protection for equipment that runs on 208–480 VAC or similar three-phase systems. With a 600 V maximum rating, it accommodates higher-voltage industrial applications, making it a reliable choice for panel feeders, motor circuits, and large electrical loads. The result is improved uptime, reduced risk of equipment damage, and clearer fault isolation in your distribution network.

Ideal use cases

• Three‑phase motor control circuits and drives in manufacturing, HVAC, and processing facilities
• feeders for large equipment such as compressors, pumps, and conveyors
• Main or branch protection within commercial or light industrial distribution panels

What sets Square D HJA36070SV apart

• Square D is known for consistent protection performance and dependable operation in industrial settings.
• Three-pole design: Provides simultaneous protection across all phases, reducing the risk of unbalanced faults and nuisance trips.
• High-voltage readiness: A 600 V rating accommodates industrial power networks, giving you a single, versatile solution for diverse installations.
• Direct replacement potential: When your system requires matching trip characteristics and form factor, this 70 A, 3‑pole unit aligns with established Square D configurations.

Practical notes and installation guidance

• Verify that your system’s voltage and current requirements align with the 70 A, 3-Pole, 600 V specifications before installation.
• Use the same part number (HJA36070SV) when replacing a worn or failed unit to preserve expected trip behavior and protective characteristics.
• Document the protection scheme in your panels, including the three-phase load details, to facilitate future maintenance and safety audits.
• Follow standard electrical safety practices during installation, ensuring the breaker is properly seated and terminals are torqued according to your panel’s guidelines.

For projects requiring reliable three-phase protection with a 70 A rating and a 600 V ceiling, the Square D HJA36070SV 70A 3-Pole 600 V circuit breaker delivers targeted, durable performance that supports efficient operation and safer power distribution.