Square D HDL36030 - 30 A, 600 V, 3-Pole Circuit Breaker | AmpState

The Square D HDL36030 is a 30-amp, 600-volt, 3-pole molded case circuit breaker designed to protect branch circuits in panelboards and load centers with precision and reliability. Built for environments that demand steady performance across residential, commercial, and light industrial applications, this unit delivers consistent protection where it matters most.

Why this HDL36030 stands out

• Compact molded case design maximizes panel space, making it easier to fit into compact or crowded load centers without compromising protection.
• Thermal-magnetic trip unit provides stable, repeatable protection by automatically adapting to current conditions, reducing nuisance trips while responding quickly to genuine faults.
• 3-pole configuration ideal for three-phase circuits or multi-wire branch circuits, up to a 600V operating environment, delivering coordinated protection across all phases.
• OEM-compatible designed to be compatible with matching Square D OEM load centers and panelboards, ensuring a reliable fit and coordinated protection strategy.
• Versatile for multiple settings suitable for residential service panels, commercial electrical rooms, and light industrial panels where dependable overcurrent and short-circuit protection is essential.

Where it fits best

Use the HDL36030 in panelboards and load centers that require 3-pole protection for three-phase equipment or multi-wire branch circuits. Its 30A rating makes it a practical choice for protecting feeders, motor loads, and distributed branch circuits in small-to-medium installations, all while maintaining safe voltage levels up to 600V.

Specifications at a glance

• Manufacturer: Square D
• Part number: HDL36030
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 30A
• Voltage rating: 600V
• Number of poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Practical tips and use cases

Pair the HDL36030 with compatible Square D load centers when upgrading an existing panel or configuring a new installation that requires reliable 3-pole protection. In commercial environments, use it to safeguard feeders supplying three-phase equipment like pumps, conveyors, or HVAC components. In residential or light industrial settings, it can protect main or sub-feed circuits where space is tight but dependable fault protection is non-negotiable.

Why choose AmpState for this part

AmpState offers genuine Square D replacement parts with specifications that align precisely with your panelboard and load center requirements. This HDL36030 unit is engineered to deliver the same protective characteristics you rely on from the OEM, helping ensure system safety, uptime, and ease of replacement.