Square D PGL36120U44 A - 1200 A, 600 V, 3-Pole Circuit Breaker | AmpState

The Square D PGL36120U44A is a high-capacity, 3-pole molded case circuit breaker designed to safeguard panelboards and load centers in demanding environments. With a 1200 A rating at up to 600 V, this unit delivers robust branch circuit overcurrent and short-circuit protection where reliability matters most.

Why this 3-pole molded case breaker stands out

• Space-efficient, compact design: The molded case format maximizes panel space without compromising protection, making it suitable for large-scale residential, commercial, and light industrial installations.
• Thermal-magnetic trip unit: Combines thermal sensing with magnetic instantaneous trip for stable, repeatable protection across a range of loads and fault conditions. You’ll experience consistent performance instead of nuisance trips.
• OEM-ready compatibility: Designed to work with matching OEM load centers and panelboards, simplifying installation and reducing integration risk in existing systems.
• High-current, versatile protection: 1200 A at 600 V across a 3-pole configuration supports main or feeder protection in sizeable panels, balancing safety with capability.

What it protects and where it fits

Ideal for applications requiring dependable branch circuit protection and short-circuit interruption, the PGL36120U44A is well-suited for:

• Residential electrical panels with high-capacity feeders or sub-feeds
• Commercial panelboards serving offices, retail spaces, or small warehouses
• Light industrial panels where durable protection and quick fault isolation are critical

Use this breaker as a main or feeder protection device in appropriately rated panels, ensuring the panel’s bus and enclosure are compatible with a 600 V, 3-pole, 1200 A device.

Technical specifications at a glance

• Manufacturer: Square D
• Part number: PGL36120U44A
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 1200 A
• Voltage rating: 600 V
• Number of poles: 3
• Application: Branch circuit overcurrent and short-circuit protection in panelboards and load centers

Practical guidance for deployment

Before installation, verify that the panel or load center is rated for 1200 A and 600 V, and confirm bus compatibility with Square D PGL-series devices. The thermal-magnetic trip unit provides reliable protection across varying temperatures and load profiles, but regular inspection and test procedures should be followed per panel labeling to maintain optimal performance.

Why buyers choose AmpState

As part of AmpState’s catalog, this Square D breaker delivers the proven reliability and OEM compatibility you expect for expansive electrical builds. It’s a purpose-built solution for professionals who demand precise protection, streamlined installation, and enduring performance in demanding panel environments.