Square D BJA36020 - 20 A, 600 V, 3-Pole Plug-In Circuit Breaker | AmpState

The Square D BJA36020 is a purpose-built 20A, 600V, 3-pole plug-in molded case circuit breaker designed to shield your panelboards and loadcenters from overcurrent and short-circuit events. Built for fast, dependable protection in residential, commercial, and light industrial settings, this unit pairs robust electrical performance with streamlined installation.

• Fast plug-in connection for quick installation and simple replacement, reducing downtime during service or upgrades.
• Thermal-magnetic trip unit delivers stable, repeatable protection by combining thermal overload sensing with instantaneous magnetic trip for short circuits.
• Three-pole configuration provides balanced, three-phase protection where required, helping maintain system integrity in multi-phase panels.
• OEM compatibility designed to work with matching Square D OEM load centers and panelboards, ensuring proper fit and reliable operation.
• Versatile applications ideal for branch circuit protection across homes, small businesses, and light industrial installations requiring reliable 20A, up to 600V protection.

Why choose the Square D BJA36020?

This plug-in molded case circuit breaker is more than a safety device—it’s a practical, time-saving solution for maintaining uninterrupted power in critical spaces. The 3-pole design ensures comprehensive coverage for three-phase circuits, while the thermal-magnetic trip unit provides consistent protection across varying loads and ambient conditions. With OEM-compatible compatibility, you can count on straightforward replacements that align with your existing panel architecture.

Technical specifications at a glance

• Manufacturer: Square D
• Part Number: BJA36020
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 20A
• Voltage Rating: 600V
• Number of Poles: 3
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Whether you’re upgrading an aging panel or outfitting a new installation, the Square D BJA36020 provides precise protection, fast serviceability, and seamless integration with compatible panelboards—delivering peace of mind for your electrical infrastructure.