Square D HDA36070UK 70A 3-Pole 600 V Circuit Breaker

The Square D HDA36070UK 70A 3-Pole 600 V Circuit Breaker is built for demanding industrial and commercial electrical systems that demand dependable protection and easy maintenance. Part Number HDA36070UK, this 70 A three-pole device is designed to interrupt power safely on overloads or short circuits, guarding motors, drives, and other heavy loads in environments up to 600 V.

Key advantages that matter in real-world use

• Three-pole protection for balanced 3‑phase loads—ideal for motors, pumps, conveyors, and HVAC equipment that run on three-phase power, ensuring synchronized interruption when a fault occurs.
• 70 A current rating provides robust protection for mid-to-high current feeders without nuisance trips, helping minimize downtime during maintenance or load surges.
• 600 V voltage rating suitable for industrial distribution panels and switchgear, offering reliable protection across higher voltage circuits commonly found in commercial facilities and manufacturing lines.
• Proven Square D reliability with a design tailored for rugged environments, where consistent performance and quick isolation are critical to safety and uptime.
• Clear fault containment helps prevent cascading electrical faults by quickly interrupting fault currents and protecting downstream equipment and wiring insulation.

Ideal applications and scenarios

• Protecting and controlling 3‑phase motors in manufacturing equipment, air handling units, and material handling systems.
• Feeding critical loads in industrial control panels, ensuring fast, safe shutdown during fault conditions.
• Retrofit or new installations where a durable, high-volume protection device is required in UK or European-style distribution configurations.

What to expect in practice

With the HDA36070UK, you get a protection system that clearly signals when a fault occurs and isolates the affected circuit to prevent damage to wiring and connected devices. This translates to less unplanned downtime, easier maintenance planning, and longer life for valuable equipment. The 3-pole design ensures balanced disconnection across all phases, reducing the risk of cycling faults and uneven loads that can stress motors and drives.

Technical snapshot

• Current rating: 70 A
• Poles: 3
• Voltage rating: 600 V
• Part number: HDA36070UK
• Product family: Square D circuit breakers

Whether you’re reinforcing a new installation or upgrading an aging panel, the Square D HDA36070UK 70A 3-Pole 600 V Circuit Breaker delivers dependable protection with a purpose-built design for three-phase systems. It’s the practical choice for professionals who value safety, reliability, and straightforward maintenance in demanding electrical environments.