Square D HJL36030M71AABCSD 71A 3-Pole 600 V Circuit Breaker

Meet the Square D HJL36030M71AABCSD—a rugged, three-pole circuit breaker built to reliably guard three‑phase electrical systems. With a 71 A current rating and a 600 V maximum, this unit is purpose‑built for industrial and commercial layouts that demand consistent protection and quick fault isolation. The part number HJL36030M71AABCSD identifies its place in the Square D lineup, ensuring compatibility with compatible panels and enclosures designed for three‑phase distribution.

Key specifications at a glance

• Current rating: 71 A
• Poles: 3 (three‑pole design for 3‑phase circuits)
• Voltage rating: 600 V
• Part number: HJL36030M71AABCSD
• Application: Suitable for protecting 3‑phase feeders and motor circuits in industrial and commercial environments

Why this breaker stands out

• Precise three‑phase protection: The 71 A rating provides targeted protection for mid‑sized three‑phase circuits, helping prevent equipment damage and downtime.
• Robust, field‑ready design: Engineered for consistent switching and reliable interruption in demanding service conditions, so your distribution network stays safeguarded even under stress.
• Trusted Square D engineering: Part of a long‑standing line of protection devices known for compatibility, easy maintenance, and predictable performance in industrial panels.

Ideal use cases

• Industrial machinery feeds and three‑phase motor circuits in manufacturing lines
• Commercial electrical distribution panels requiring dependable 3‑pole protection at 600 V
• HVAC systems, pumps, and other equipment that run on three‑phase power
• Panel upgrades or replacements where a 71 A, 3‑pole, 600 V breaker matches existing wiring and protection schemes

Practical installation and consideration tips

• Verify panel compatibility with the HJL series and ensure mounting aligns with enclosure specifications
• Follow your local electrical codes and the manufacturer’s installation instructions for safe connection and operation
• Plan for replacement or modernization by noting the exact part number (HJL36030M71AABCSD) to ensure correct form, fit, and trip characteristics
• Inspect for any signs of damage or shipping‑related impacts before installation and handle with standard electrical safety precautions

For panel designers, maintenance teams, and electrical engineers, the Square D HJL36030M71AABCSD provides a dependable, well‑specified solution for protecting 3‑phase circuits up to 600 V. Its 71 A rating is ideal for medium‑demand feeders, helping keep equipment safe while simplifying replacement and ongoing protection strategy in industrial environments.