Square D HJL36070C 70A 3-Pole 600 V Circuit Breaker

The Square D HJL36070C 70A 3-Pole 600 V Circuit Breaker is a trusted overcurrent protection solution designed for demanding three‑phase electrical systems. With a 70 amp rating and three poles, it cleanly interrupts fault currents across all three hot legs, helping protect connected equipment and maintain safe, reliable operation in industrial and commercial settings.

Designed for performance in higher‑voltage environments, this 600 V rated breaker is well suited for motor feeders, drives, and other heavy loads that demand dependable protection and quick fault clearance. Its rugged molded‑case construction supports long service life in real‑world installations, while a thermal‑magnetic trip mechanism provides precise protection against both overloads and short circuits.

• 70 A, 3-Pole design – ideal for three‑phase circuits up to 600 V, simplifying protection for motors and feeders.
• 600 V maximum rating – built to handle higher‑voltage distribution needs typical in commercial and industrial equipment.
• Genuine Square D part – part number HJL36070C, ensuring compatibility with Square D panels and spare‑parts ecosystems.
• Reliable protection – thermal‑magnetic trip provides consistent response to overloads and fault conditions, helping minimize equipment damage and downtime.
• Durable construction – engineered for rugged use in challenging environments, with dependable performance over time.

This breaker is an excellent choice for facilities upgrading or stocking spare parts for three‑phase systems. It’s particularly valuable for protecting feeders and motors in manufacturing lines, industrial automation, HVAC equipment, and other heavy‑duty applications where uptime matters.

Who benefits most: maintenance teams, electrical contractors, and facility managers looking for a reliable, brand‑recognized protection device that ensures compatibility with existing Square D installations and simplifies sourcing for replacements and repairs.

Practical tips for use and installation:

• Confirm panel compatibility with the HJL36070C and ensure correct three‑phase alignment before installation.
• Inspect wiring and tighten connections to prevent heat buildup and ensure accurate trip performance.
• Keep the exact part number accessible for quick replacements and maintenance planning.

Specifications at a glance

• Current rating: 70 A
• Poles: 3
• Voltage rating: 600 V
• Part number: HJL36070C
• Brand: Square D