Square D HDA36070SR 70A 600 V Circuit Breaker

Overview

The Square D HDA36070SR 70A 600 V Circuit Breaker is a reliable overcurrent protection device designed to safeguard electrical circuits from overloads and short circuits. With a 70 A current rating and a 600 V voltage rating, this breaker delivers dependable performance in demanding commercial and industrial applications, helping protect wiring, devices, and equipment while minimizing downtime.

Key specifications

• Part number: HDA36070SR
• Current rating: 70 A
• Voltage rating: 600 V
• Brand: Square D

Why this model stands out

The HDA36070SR combines Square D’s engineering pedigree with a straightforward, install-ready design. Its 70 A rating is well-suited for protecting feeders and branch circuits that approach the 70-amp threshold, while the 600 V rating accommodates higher-voltage distribution within safe, code-compliant limits. This makes it an excellent choice for upgrading existing Square D panels or configuring new installations that require precise, reliable protection at a practical, mid-range current level. By choosing this model, you rely on a component designed to integrate seamlessly with compatible Square D panels and distribution systems, ensuring consistent performance and straightforward maintenance.

Ideal use cases

• Feeder protection for commercial or light industrial panels operating up to 600 V
• Branch-circuit protection for equipment and machines drawing up to 70 A
• Replacement for compatible Square D HDA-series breakers in existing installations

Practical installation tips

Verify that your distribution panel accepts HDA-series breakers and confirm compatibility with the bus stabs and mounting hardware. Adhere to all local electrical codes and safety practices, and consult a licensed electrician for correct sizing and installation. Keeping a spare HDA36070SR on hand can reduce downtime during routine maintenance or unexpected outages.