Square D HLA36070SL 70A 3-Pole 600 V Circuit Breaker

Introducing the Square D HLA36070SL 70A 3-Pole 600 V Circuit Breaker—the reliable protection your 3-phase electrical system relies on. Built for commercial and light-industrial panels, this breaker delivers steadfast overload and short-circuit protection at voltages up to 600 V, helping to safeguard wiring, equipment, and uptime.

Key specifications

• Current rating: 70 A
• Poles: 3
• Voltage rating: 600 V
• Part number: HLA36070SL
• Brand: Square D

Why this Square D breaker stands out

• Three-pole design for balanced protection across all phases in a 3-phase system, ensuring coordinated trip and reliable feeder protection.
• High-current capability with a 70 A rating, making it suitable for distributing power to robust equipment and motors without unnecessary interruptions.
• 600 V insulation and protection aligned with industrial and commercial distribution needs, enabling safe operation in higher-voltage environments.
• Exact part match for Square D panels—easy integration with compatible panels and accessories in the Square D ecosystem for a streamlined upgrade or replacement.

Ideal use cases

• Protection for 3-phase feeders in commercial electrical panels, machine rooms, and light-industrial facilities.
• Feeder breakers for equipment racks, conveyors, HVAC systems, and motor-control centers where reliable trip protection is critical.
• Replacement or upgrade in existing Square D installations that require a 70 A, 3-pole, 600 V solution.

Installation and practical considerations

To maximize performance and safety, pair the HLA36070SL with compatible Square D enclosures and bus assemblies designed for 3-pole protection. Ensure proper torque on termination lugs and confirm system voltage remains within the 600 V rating. As with all electrical work, installation should comply with local codes and be performed by qualified personnel.

Whether you're upgrading an aging panel or building a new distribution rack, the Square D HLA36070SL delivers dependable protection for 3-phase circuits with a straightforward, standards-aligned design. Rely on trusted Square D engineering to keep your electrical system safe, stable, and ready for demanding applications.