Square D HJA36070UH 70A 3-Pole 600 V Circuit Breaker

Introducing the Square D HJA36070UH 70A 3-Pole 600 V Circuit Breaker — a genuine Square D part (Part Number HJA36070UH) built to safeguard 3-phase electrical systems with dependable, consistent protection. Designed for industrial and commercial environments, this breaker combines a practical 3-pole design with a strong 70 amp rating to stand up to demanding loads while keeping wiring and equipment safe.

• Current rating: 70 A
• Poles: 3 (three-pole design for balanced 3-phase protection)
• Voltage rating: 600 V
• Part number: HJA36070UH
• Brand: Square D

Why this matters in real-world setups:

• Three-pole protection ensures all phases trip together, minimizing the risk of motor or equipment damage due to uneven phase loading in 3-phase systems.
• A 600 V rating expands its applicability to higher-voltage distribution environments common in industrial panels and commercial installations.
• With a 70 A capacity, it provides reliable protection for feeders and branch circuits without excessive nuisance trips, helping maintain uptime for critical systems.
• As a recognized Square D component, it offers compatibility with panels and enclosures designed for HJA-series breakers, preserving labeling, certifications, and installation standards.

Ideal use cases:

• Protection for motors, conveyors, and HVAC equipment in manufacturing or processing facilities
• Feeder protection in industrial control panels and distribution boards that service 3-phase circuits
• Protection for commercial power systems where higher voltage (up to 600 V) is present

Practical installation notes:

• Confirm that your panel accepts HJA-series breakers and that a 70 A setting aligns with your circuit design.
• Follow standard electrical safety practices, verify proper torque on connections, and ensure appropriate clearance and insulation for 600 V applications.
• Use as a direct, genuine replacement to maintain system reliability and avoid compatibility issues.

For professionals seeking durable, dependable 3-phase protection, the Square D HJA36070UH 70A 3-Pole 600 V Circuit Breaker offers a precise fit, proven performance, and the trusted reliability of Square D—delivering peace of mind for critical electrical infrastructure.