Square D HDA36070SJ 70A 3-Pole 600 V Circuit Breaker

When your 600V, three‑phase system needs decisive protection, the Square D HDA36070SJ 70A 3‑Pole 600V circuit breaker stands ready. Built to guard critical electrical circuits, this device delivers reliable interruption to keep motors, drives, and process lines safe from overcurrent events.

From a trusted name in electrical protection, the HDA36070SJ embodies Square D’s commitment to performance and durability. Designed for industrial and commercial applications, it offers consistent trip behavior and solid construction that technicians rely on in demanding environments.

Key specifications and identifiers

• Current rating: 70 A
• Poles: 3
• Voltage rating: 600 V
• Part number: HDA36070SJ
• Series: HDA family

Why this model is a smart choice

• Balanced three‑phase protection: Three poles ensure simultaneous disconnection across all phases, preventing dangerous phase imbalances that can damage motors and equipment.
• 600V readiness: Engineered for higher‑voltage applications common in industrial settings, enabling safe handling of demanding loads.
• Reliable replacement option: Ideal for upgrading or replacing existing 70A, 3‑pole breakers in compatible Square D panels, helping you maintain consistent performance across your distribution system.
• Durable construction for tough environments: Built to withstand the rigors of manufacturing floors, data centers, and HVAC/regulation systems where dependable protection matters most.

Practical use scenarios

• Protect 3‑phase motors, conveyors, pumps, and processing equipment in 600V distribution panels
• Upgrade legacy installations that require a 70A, 3‑pole, 600V protective device
• Install in commercial/industrial service panels where reliable, trip‑clear protection is critical for uptime

Installation and compatibility tips

Use only in panels and bus configurations designed for the HDA family. Follow manufacturer installation instructions for proper mounting, securing, and electrical connections to ensure optimal performance and safety.

For professionals safeguarding complex electrical systems, the HDA36070SJ delivers clear, dependable protection with a straightforward path to reliable service continuity. Add this circuit breaker to your Square D inventory and secure robust, three‑phase protection for your most critical loads.