Commander 20 Amp Circuit Breaker BQL320 - 20 A, 240 V, 3-Pole Bolt-On Circuit Breaker | AmpState

Commander BQL320 is a 20A, 240V, 3-pole bolt-on molded case circuit breaker designed to deliver dependable branch-circuit overcurrent and short-circuit protection in panelboards and loadcenters. Built for steady performance in demanding environments, this unit pairs rugged construction with precise trip characteristics to keep electrical systems safe and uninterrupted.

Why this 3-pole bolt-on breaker stands out

• Secure bolt-on mounting ensures a rigid, vibration-resistant bus connection that stays tight under dynamic conditions and thermal cycling.
• Thermal-magnetic trip unit provides stable, repeatable protection—responding quickly to overloads and short circuits while minimizing nuisance trips.
• OEM-compatible design is engineered to work with matching loadcenters and panelboards, simplifying installs and replacements without compatibility surprises.
• Three-pole protection suits balanced three-phase circuits, helping protect equipment and wiring in commercial and light industrial applications.
• Versatile performance suited for residential, commercial, and light industrial environments where reliable power protection matters.

Technical specifications at a glance

• Part Number: BQL320
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 20A
• Voltage Rating: 240V
• Number of Poles: 3
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use cases

• Upgrading or expanding panelboards and loadcenters in commercial spaces like offices, retail, or light industrial facilities.
• Replacing aging or worn breakers in residential subpanels where three-phase protection is required or where 240V service is used.
• Protecting motors, compressors, and other 3-phase equipment that require reliable fault interruption and rapid trip responses.

How it supports your electrical system

The Commander 20A 240V 3-pole bolt-on breaker provides precise, predictable protection for three-phase circuits, reducing the risk of arcing faults and equipment damage. Its bolt-on design promotes a solid bus connection, which helps maintain consistent current flow and minimizes voltage drop at the connection point. By using a thermal-magnetic trip unit, it balances sensitivity and selectivity—tripping quickly on significant faults while avoiding unnecessary interruptions during normal operation.

Installation and compatibility tips

• Verify that the panelboard or loadcenter is designed for bolt-on molded case breakers and that the same manufacturer’s compatible accessories are used.
• Ensure the 3-pole configuration matches your three-phase distribution needs and that line/load connections align with the panel’s bus arrangement.
• Periodically test for smooth operation of the trip mechanism and inspect the mounting hardware to maintain a tight, vibration-resistant connection.

Why choose this product

When you need a reliable, purpose-built solution for 3-phase branch circuit protection, the Commander BQL320 delivers a precise balance of performance and compatibility. It’s engineered to integrate seamlessly with OEM panels, offers robust protection for a range of applications, and provides the durability required in everyday electrical infrastructure. Choose this 20A, 240V, 3-pole bolt-on breaker for installations where dependable protection and straightforward service are non-negotiable.