Square D HLL26000S15 150A 2-Pole 600 V Circuit Breaker

Meet the Square D HLL26000S15 150A 2-Pole 600 V Circuit Breaker — a rugged, purpose-built protective device crafted for demanding electrical environments. With a 150 A current rating, a two-pole design that interrupts both conductors together, and a 600 V rating, this breaker delivers dependable protection for high-energy circuits in industrial and commercial settings.

Key specifications

• Part Number: HLL26000S15
• Current rating: 150 A
• Poles: 2
• Voltage rating: 600 V

Why it matters for your setup

This 2-pole configuration ensures simultaneous disconnection of both live conductors, providing safer servicing and reducing fault exposure in 600 V distribution systems. Built for reliability, the HLL26000S15 is designed to withstand the demands of feeder protection, motor circuits, and high-amperage loads that populate commercial electrical rooms and industrial panels.

Ideal use cases

• Feeder protection for 600 V panel boards in manufacturing facilities
• Protection for motors and large electrical equipment in commercial spaces
• Backup protection in power distribution assemblies where two-pole interrupting is required

What sets it apart

As part of Square D’s trusted protection lineup, this HLL-series breaker combines straightforward replacement with consistent performance in high-current applications. Its 2-pole design provides clear, coordinated isolation, helping you meet safety and reliability standards without overcomplicating maintenance routines.

Installation and compatibility tips

Ensure your panel or switchgear is designed to accommodate HLL-series breakers and two-pole 600 V devices. When replacing an existing protector, match the catalog number (HLL26000S15) to maintain proper fit, enclosure clearance, and electrical clearance requirements. Always follow proper lockout/tagout procedures and verify circuit labeling after installation.

Maintenance and care

Periodic visual inspections for signs of wear, heat discoloration, or abnormal gaps in mounting can help identify potential issues before they impact performance. Replace any breaker that shows evidence of damage or degraded operation to maintain system protection.

Designed for electricians, facilities managers, and anyone responsible for safe, reliable high-voltage distribution, the Square D HLL26000S15 150A 2-Pole 600 V Circuit Breaker is a dependable choice for protecting critical circuits and ensuring safe maintenance windows. Available through authorized electrical distributors and supply houses, it’s a practical upgrade or replacement for high-capacity, two-pole protection in 600 V systems.