Square D FI36025 - 25 A, 3-Pole Plug-In Circuit Breaker | AmpState

Meet the Square D FI36025 — a 25 A, 3-pole plug-in molded case circuit breaker that delivers reliable branch circuit protection for panelboards and load centers. Built to snap into place quickly, it minimizes downtime during installs or replacements while delivering confident, long-lasting performance.

Why this 3-pole plug-in breaker stands out

• Fast plug-in connection enables rapid installation and streamlined replacements, reducing panel downtime during upgrades or maintenance.
• Thermal-magnetic trip unit provides stable, repeatable protection: the thermal element handles sustained overloads, while the magnetic element reacts instantly to short circuits, helping prevent damage to wiring and devices.
• OEM-compatible design matched to Square D load centers and panelboards for a consistent fit, predictable trip curves, and straightforward field upgrades.
• Versatile for multiple environments suitable for residential, commercial, and light industrial applications where dependable protection matters.
• Molded case, 3-pole configuration delivers balanced protection across three conductors, ideal for three-phase or multi-wire circuits in compatible panels.

Technical snapshot

• Manufacturer: Square D
• Part Number: FI36025
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 25 A
• Number of Poles: 3
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Ideal use cases and practical scenarios

• Upgrading or replacing breakers in existing Square D panelboards and load centers where a 25 A, 3-pole solution is required.
• Protecting balanced three-phase or multi-wire circuits in light commercial spaces and small industrial installations.
• Adding a reliable protection layer to new or renovated electrical rooms, ensuring cohesive performance with OEM-equivalent components.

Tips for optimal performance

Before installation, ensure the panel is compatible with the FI36025 and that the overall panel rating supports a 25 A, 3-pole device. Power down the panel and follow proper safety procedures. When seating the breaker, insert firmly until it latches and verify the labeling confirms the 25 A rating and three-pole configuration. For ongoing reliability, pair this plug-in breaker with other Square D devices that share the same OEM line to maintain coordinated protection across the panel.