Square D HDL36015 - 15 A, 600 V, 3-Pole Circuit Breaker | AmpState

The Square D HDL36015 is a trusted 3-pole molded case circuit breaker designed to protect your electrical system with precision and reliability. At 15 A and 600 V, this unit provides dependable branch circuit overcurrent and short-circuit protection, making it a smart choice for panelboards and load centers across residential, commercial, and light industrial environments.

Why the HDL36015 stands out

• Compact molded case design delivers efficient use of panel space, helping you fit more protection without crowding the enclosure.
• Thermal-magnetic trip unit delivers stable, repeatable protection by quickly responding to both overloads and short circuits, reducing nuisance trips and downtime.
• 3-pole configuration supports three-phase circuits, ensuring coordinated protection in modern commercial and industrial setups.
• 600V rating expands its applicability beyond low-voltage panels, giving you flexibility in higher voltage distribution systems.
• OEM compatibility designed to work with matching manufacturer (OEM) load centers and panelboards for smooth upgrades and replacements.

Technical snapshot

• Manufacturer: Square D
• Part Number: HDL36015
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 15 A
• Voltage Rating: 600 V
• Number of Poles: 3
• Applications: Branch circuit overcurrent and short-circuit protection

Ideal use cases

• Residential panelboards where space efficiency and reliable protection are paramount
• Commercial electrical rooms and light industrial panels requiring 3-phase protection
• Systems that need robust short-circuit interruption alongside precise overcurrent protection
• Upgrades or replacements in OEM-compatible load centers for consistent performance

How this breaker solves real-world problems

In busy electrical closets, crowded panels often lead to a trade-off between space and protection. The HDL36015’s compact design minimizes footprint while the thermal-magnetic trip unit provides accurate, repeatable responses to overloads and faults. That means shorter downtime, fewer trip-induced interruptions, and a safer, more predictable electrical system. For facilities running three-phase equipment, the 3-pole configuration ensures synchronized protection across all phases, reducing the risk of uneven loading and arc faults.

Practical tips for best results

• Always verify your panelboard compatibility with the HDL36015 before replacement or installation to ensure smooth operation.
• Use the breaker in circuits that stay within the 15 A rating to avoid nuisance trips during normal operation.
• Follow panel manufacturer torque guidelines for securing terminations, and ensure clean, tight connections for reliable performance.
• Pair this breaker with appropriate labeling and protection coordination in the panel to streamline maintenance and future upgrades.

Whether you’re outfitting a compact residential panel, a commercial distribution rack, or a light industrial control center, the Square D HDL36015 delivers dependable protection, space-efficient design, and compatibility with OEM panel systems—helping you keep power flowing safely and efficiently.