Square D HLL36045 - 45 A, 600 V, 3-Pole Circuit Breaker | AmpState

Introducing the Square D HLL36045 — a rugged 45 A, 600 V, 3-pole molded case circuit breaker engineered to protect branch circuits in panelboards and loadcenters with dependable performance you can rely on.

• Compact molded case design maximizes panel space without sacrificing protection, making it ideal for tight electrical enclosures.
• Thermal-magnetic trip unit delivers stable, repeatable protection for both overloads and short circuits, reducing nuisance trips and improving uptime.
• 3-pole configuration provides synchronized protection across all three phases, essential for balanced, safe three-phase systems.
• 600 V voltage rating supports higher voltage installations common in commercial and light industrial settings.
• 45 A amperage rating offers precise current handling for branch circuits, protecting wiring and connected equipment.
• OEM-compatible designed to pair with matching Square D panelboards and loadcenters for seamless, reliable integration.
• Versatile across applications suitable for residential, commercial, and light industrial environments where dependable circuit protection matters.

Why this matters in real-world use:

• The thermal-magnetic protection curve responds quickly to short circuits while maintaining stable operation during normal conditions, helping to safeguard wiring, devices, and personnel.
• The compact form factor and OEM compatibility simplify installation, retrofits, and panel upgrades, reducing downtime and labor costs.
• With a clear 3-pole design, you get comprehensive protection for three-phase systems without compromising space or performance.

Technical snapshot

• Manufacturer: Square D
• Part Number: HLL36045
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 45 A
• Voltage Rating: 600 V
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection