Square D HDA36070SD 70A 3-Pole 600 V Circuit Breaker

The Square D HDA36070SD is a robust circuit breaker designed for demanding three‑phase power systems. With a 70 A rating, 3 poles, and a 600 V maximum voltage, this unit provides dependable protection for essential equipment in industrial and commercial environments.

Key specifications

• Current rating: 70 A
• Poles: 3
• Voltage rating: 600 V
• Part number: HDA36070SD
• Brand: Square D

Why choose this 70 A, 3‑pole, 600 V breaker

• Three‑phase protection: Ideal for three‑phase feeders and motor circuits, helping prevent damage from overloads and short circuits in complex electrical networks.
• Precise protection for demanding loads: The 70 A rating is tailored for mid‑size industrial and commercial equipment, reducing nuisance trips while safeguarding valuable assets.
• Compatibility with Square D systems: Engineered to integrate smoothly with Square D panels and distribution setups, delivering reliable performance in established electrical infrastructures.

Ideal use cases

Use the HDA36070SD in industrial control panels, three‑phase distribution boards, or machinery housings that require solid three‑phase protection at up to 600 V. It’s well suited for feeders feeding motors, pumps, conveyors, and other equipment where dependable interruption protection is essential.

Practical tips for deployment

• Confirm panel compatibility and mounting style to ensure a correct, secure fit.
• Match the interrupting capability and trip characteristics to your system’s fault levels and load profile.
• Keep a spare unit on hand for quick replacement to minimize downtime in critical applications.