Square D HLL36090 - 90 A, 600 V, 3-Pole Circuit Breaker | AmpState

The Square D HLL36090 is a 90 A, 600 V, 3-pole molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Built for residential, commercial, and light industrial environments, this genuine Square D component ensures reliable performance where it matters most.

Why this breaker stands out

• Compact molded case design maximizes panel space, helping you fit more protection without crowding the enclosure.
• Thermal-magnetic trip unit provides stable, repeatable protection—fast response to short circuits and controlled behavior during overloads for safer, predictable operation.
• OEM-compatible ensures seamless integration with matching Square D load centers and panelboards, preserving electrical performance and ease of replacement.
• Three-pole configuration suited for three-phase circuits, expanding protection across common residential, commercial, and light industrial applications.
• 600 V rating enables use in higher-voltage systems where robust branch-circuit protection is required.

Ideal use cases

Choose the HLL36090 for panelboard and loadcenter protection in a variety of settings, including

• Residential service panels where compact, reliable protection is essential
• Commercial distribution boards serving offices, retail, or light manufacturing
• Light industrial equipment feed where stable trip performance is critical

Technical snapshot

• Manufacturer: Square D
• Part Number: HLL36090
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 90 A
• Voltage Rating: 600 V
• Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Practical guidance for installation and use

• Pair this breaker with compatible Square D load centers and panelboards to ensure proper fit, performance, and reliable protection.
• Verify that your system operates within the 600 V environment to match the breaker’s voltage rating and prevent nuisance trips.
• When upgrading or replacing, confirm the panel’s ampacity and the circuit’s load profile to determine if 90 A is the appropriate protection level for the feeder.
• Keep a spare, OEM-matched unit on hand for quick replacement and minimized downtime during maintenance or upgrades.

Choose the Square D HLL36090 for a dependable, space-conscious, three-pole protective solution that aligns with OEM panels and delivers clear, predictable protection for a range of building types. Available through AmpState, it’s a genuine, ready-to-install answer for your branch circuit protection needs.