Square D HLL36125LV - 125 A, 600 V, 3-Pole Circuit Breaker | AmpState

Square D HLL36125LV is a 125 A, 600 V, 3-pole molded‑case circuit breaker engineered to deliver dependable branch‑circuit overcurrent and short‑circuit protection in panelboards and loadcenters. Its compact design maximizes usable panel space while providing precise, repeatable protection for multi‑phase systems.

• Compact molded‑case design optimizes panel real estate without compromising protection or wiring access, making it ideal for space‑constrained panels and retrofit installs.
• Thermal‑magnetic trip unit delivers stable overload protection with fast response to short circuits, reducing arcing, heat buildup, and equipment wear.
• Three‑pole construction provides synchronized disconnection of all conductors in 3‑phase circuits, enhancing safety and system reliability.
• OEM‑to‑OEM compatibility designed to pair seamlessly with matching Square D loadcenters and panelboards, ensuring correct fit, trip coordination, and streamlined replacements.
• Versatile application suitable for residential, commercial, and light industrial environments, handling a range of branch circuits with confidence.

Technical specifications

• Manufacturer: Square D
• Part Number: HLL36125LV
• Type: Thermal‑magnetic molded case circuit breaker
• Amperage Rating: 125 A
• Voltage Rating: 600 V
• Number of Poles: 3
• Application: Branch circuit overcurrent and short‑circuit protection

Use cases and practical scenarios

• New installations in three‑phase panelboards and loadcenters where reliable protection and compact sizing matter.
• Replacement in existing Square D systems to maintain proper trip curves, compatibility, and coordinated protection.
• Feeder protection for commercial lighting circuits or small motor loads where a robust, easily serviceable breaker is needed.
• Retrofits in residential multi‑breaker setups requiring proven overload and short‑circuit protection without sacrificing panel space.

Why this model stands out

• Precision protection with a dedicated thermal‑magnetic trip unit means fewer nuisance trips and clearer fault isolation.
• Designed for compatibility with OEM panels ensures dependable performance and simplifies procurement and maintenance.
• Built for durability in diverse environments—residential, commercial, and light industrial—without sacrificing space or ease of installation.