Square D FA34030 - 30 A, 3-Pole Plug-In Circuit Breaker | AmpState

Square D FA34030 is a 30-amp, 3-pole plug-in molded case circuit breaker designed for dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Built for quick, straightforward replacement and robust performance, it’s a reliable choice for commercial and industrial electrical layouts as well as residential applications requiring 3-phase protection.

Fast, dependable installation

The FA34030 features a fast plug-in connection that simplifies installation and future replacements. This means less downtime during upgrades or maintenance and a cleaner, secure fit in compatible Square D panelboards and load centers.

Smart protection you can trust

Equipped with a thermal-magnetic trip unit, this breaker delivers stable, repeatable protection across a range of fault conditions. The thermal element handles overload protection while the magnetic element responds quickly to short circuits, helping protect wiring, devices, and connected equipment from damage.

Designed for compatibility and versatility

Manufactured by Square D and labeled with part number FA34030, this 30A, 3-pole plug-in MCCB is engineered to work with matching OEM load centers and panelboards. Its plug-in mounting style makes it an ideal fit for panel upgrades, retrofits, or new installations in residential settings that require three-phase protection, as well as commercial and light industrial environments where reliable branch circuit protection is essential.

Technical specifications at a glance

• Manufacturer: Square D
• Part number: FA34030
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 30 A
• Number of poles: 3
• Mounting style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use cases and practical applications

• Upgrading or replacing worn or trip-prone breakers in Square D panelboards and load centers.
• Providing reliable 3-phase protection for commercial equipment, lighting, and motor loads in light industrial settings.
• Installing in new or retrofit projects where a compact, durable plug-in MCCB is required for clean, organized electrical distribution.

Why this matters for your project

With its dedicated three-pole design and plug-in architecture, the FA34030 minimizes installation time while delivering precise protection characteristics. The combination of a thermal overcurrent mechanism and magnetic short-circuit response helps prevent nuisance trips and equipment damage, contributing to longer service life for panels and downstream devices, and reducing maintenance interruptions in busy facilities.

What you can expect

• Reliable 30A protection for branch circuits in 3-phase systems
• Easy, tool-friendly plug-in replacement in compatible panels
• Durable molded case construction designed for everyday electrical environments
• Clear compatibility with OEM Square D load centers and panelboards for streamlined installations