Square D HJA36070SD 70A 3-Pole 600 V Circuit Breaker

Meet the Square D HJA36070SD—a purpose-built 3-pole circuit breaker designed for demanding three-phase electrical systems. With a 70 A current rating and a 600 V maximum, this device provides reliable, clear-cut protection for feeders and equipment in industrial and commercial panels. The part number HJA36070SD identifies the exact configuration you need, simplifying sourcing, stocking, and replacement in demanding environments.

Key specifications

• Part number: HJA36070SD
• Current rating: 70 A
• Poles: 3
• Voltage rating: 600 V
• Series/brand: Square D (HJA family)

Ideal applications

Designated for three-phase power distribution, the HJA36070SD is well-suited for protecting:

• Feeders in industrial control panels and distribution enclosures
• Motor circuits in manufacturing equipment and processing lines
• Three-phase power branches in commercial facilities requiring a 70 A protection device

Use cases include panelboard replacements, system upgrades, or new installations where a 70 A, 3-pole, 600 V device is specified. It’s a practical fit for environments where reliability and clear electrical protection are priorities.

Installation and safety notes

For correct operation, ensure the device is compatible with your panel and termination methods. Follow the installer’s manual and local electrical codes during replacement or installation. Torque and wiring specifics should be taken from the official datasheet and mounting guidelines to ensure secure connections and safe operation. When in doubt, verify system compatibility with a qualified electrician.

Why choose Square D HJA36070SD

Choosing a Square D breaker means aligning with a trusted name in electrical protection. The HJA36070SD delivers precise three-pole protection at 70 A for 600 V systems, simplifying identification and replacement in service fleets and stockrooms. Its clearly defined ratings help technicians quickly verify suitability for a given circuit, reducing downtime and misapplication. If your panel requires a compatible, field-assembled solution with reliable performance, this part provides a straightforward, dependable option.