Square D HLA36070SJ 70A 3-Pole 600 V Circuit Breaker

The Square D HLA36070SJ 70A 3-Pole 600V Circuit Breaker is a dependable solution for protecting three-phase electrical circuits in demanding commercial and light-industrial environments. With a 70 ampere rating, three poles, and a 600-volt maximum rating, this breaker provides precise overcurrent protection where it matters most—keeping motors, conveyors, and distribution feeds up to speed while deterring damage from faults.

• Three-pole protection: interrupts all three hot legs together, ensuring balanced fault isolation across your 3-phase system.
• 70 A current rating: tailored for feeder and branch circuits powering motors, pumps, HVAC units, and other high-load equipment.
• 600 V maximum rating: suitable for a range of industrial and commercial distribution voltages, giving you flexibility in system design.
• Part number: HLA36070SJ, so you can confidently replace or upgrade within Square D panels designed for HLA-series breakers.
• Trusted brand: Square D by Schneider Electric—known for consistent performance and reliable protection in critical installations.

This breaker is specifically designed for panels and enclosures that specify HLA-series devices, ensuring compatibility and proper UL-listed installation. The 3-pole construction guarantees simultaneous disconnection of all phases under fault conditions, reducing the risk of phase imbalances and equipment damage. Ideal for protecting 3-phase loads such as industrial motors, process equipment, and multi-line feeders in manufacturing facilities, data centers, and large workshops.

Why choose the HLA36070SJ for your system

• Clear compatibility: matches Square D panels that accept HLA-type breakers, simplifying replacement and upgrades.
• Reliable protection: designed to promptly interrupt fault currents across all three conductors, helping to prevent collateral damage.
• Efficient maintenance: part of a straightforward protection strategy for service entrances and distribution panels, enabling quicker fault diagnosis and restoration.

Practical use guidance: when selecting this breaker, verify that your distribution panel supports HLA-series devices and that the circuit length and load requirements align with a 70A, 3-pole configuration. For installation, ensure the device is correctly seated in the panel, terminals are torqued to the manufacturer’s specifications, and replacement is performed by qualified personnel to maintain listing and safety standards. Keeping a correctly rated spare on hand minimizes downtime during maintenance or panel upgrades.