Square D | FCJ34020 | Circuit Breaker | 20A | 3-Pole | 480V | Bolt-On

Square D FCJ34020 is a 20 Amp, 3-Pole, 480-Volt bolt-on circuit breaker engineered for robust, field-ready performance in industrial electrical panels. This unit shines in maintenance, retrofit, and replacement scenarios where exact specifications matter—making it the precise match when your system calls for a bolt-on 3-pole device in a 480V circuit.

Designed for reliability in demanding environments, the FCJ34020 fits squarely in Square D installations that require strict amperage control and secure mounting. The bolt-on design provides a physically solid connection that helps resist loosening in vibration-prone equipment and busy service bays, while simplifying on-site installation and future servicing.

Key specifications

• Amperage: 20 A
• Poles: 3-Pole
• Voltage: 480 V
• Mounting: Bolt-On
• Part number: FCJ34020

Ideal use cases

- Industrial control panels and switchboards that operate at 480 volts and require three separate poles for distributed loads.

- Retrofit projects where older bolt-on breakers must be replaced with a matching 20A, 3-pole unit to maintain consistent protection and trip characteristics.

- Maintenance and emergency field service where a direct part reference (FCJ34020) ensures quick, accurate replacement and minimizes downtime.

Why this bolt-on choice stands out

• Secure mounting: The bolt-on configuration provides a sturdy, vibration-resistant hold that’s ideal for equipment with frequent start/stop cycles.
• Exact compatibility reference: When you reference FCJ34020, you’re aligning with the exact Square D spec required by many 480V, 3-pole installations.
• Streamlined service: Field technicians appreciate the straightforward installation path of bolt-on breakers, reducing service time and errors.

Important compatibility note

Before ordering, confirm fit and ratings match your panel design and electrical system. The part number FCJ34020 is the best reference for compatibility, and your panel’s labeling should indicate 3-pole, 480V bolt-on requirements for a clean match.