Square D HJL36090AABCSH 36090A 3-Pole 600 V Circuit Breaker Potential Transformer

Meet the Square D HJL36090AABCSH—a rugged, three-pole circuit breaker designed for 600 V systems and equipped with an integrated potential transformer. This combination device delivers reliable overcurrent protection while providing direct voltage sensing for protection relays and metering equipment, enabling smarter, more efficient electrical distribution in demanding industrial environments.

Why this design stands out

• Integrated potential transformer: Streamlines wiring and installation by combining protection and voltage sensing in a single unit, reducing part count and panel space requirements.
• 3-Pole protection for 600 V systems: Ensures synchronized, comprehensive protection across all phases, ideal for complex feeders, motor circuits, and switchgear banks.
• High current rating: With a current rating of 36090 A, this breaker supports substantial industrial loads while maintaining precise, reliable trip performance when faults occur.
• Durable, compact design: Built to withstand harsh industrial environments and fit neatly within standard Square D panels and switchgear, aiding maintenance and scalability.
• Straightforward integration: Designed to work within common 600 V distribution architectures, making upgrades or replacements easier for engineers and technicians.

Specifications at a glance

• Product: Square D Circuit Breaker
• Part number: HJL36090AABCSH
• Poles: 3
• Voltage rating: 600 V
• Current rating: 36090 A
• Features: Integrated potential transformer for direct voltage sensing

Use cases and ideal applications

• Feeder protection in 600 V distribution panels for manufacturing lines, processing plants, and data centers.
• Motor control centers that require embedded metering signals for SCADA, energy management, or protective relays.
• Panel upgrades where space optimization and simplified wiring are priorities, helping installers reduce installation time and potential wiring errors.

Practical benefits you’ll notice

• Faster diagnostics and smarter protection thanks to built-in voltage sensing feeding protection relays and meters without extra transformers.
• Cleaner panel layouts with fewer interconnects, thanks to the combined breaker-and-transformer design.
• Improved reliability in harsh environments due to rugged construction and optimized mounting within standard Square D switchgear.

Whether you’re replacing aging equipment, expanding a 600 V distribution network, or upgrading to a more integrated protection-and-monitoring solution, the Square D HJL36090AABCSH delivers precise protection, seamless integration, and tangible workflow efficiencies. This is the choice for engineers and technicians who demand dependable performance, reduced wiring complexity, and clear, actionable metering signals in demanding industrial settings.