Square D BDA34100Y - 100 A, 480 V, 3-Pole Plug-In Circuit Breaker | AmpState

Introducing the Square D BDA34100Y—a 100 A, 480 V, 3-pole plug-in molded case circuit breaker designed to deliver dependable branch circuit protection in panelboards and load centers. Its fast plug-in connection enables quick installation or field replacement, reducing downtime while maintaining robust protection for demanding electrical systems.

Key benefits

• Rapid plug-in installation: Fast, tool-free connection simplifies upgrades and replacements, helping you get systems back online quickly.
• Thermal-magnetic trip unit: Delivers stable, repeatable protection by reacting predictably to overloads and short circuits, minimizing nuisance trips while safeguarding wiring and equipment.
• Three-phase reliability: 3-pole design is tailored for 3-phase 480 V networks, making it ideal for commercial and light industrial environments.
• OEM-compatible fit: Designed to be compatible with matching Square D OEM load centers and panelboards, ensuring proper form, fit, and coordinated protection.
• 100 A branch circuit protection: Perfect for circuits that require solid, scalable protection without compromising system flexibility.
• Plug-in mounting: Simplifies panel maintenance and future upgrades, keeping installation straightforward and efficient.

Technical snapshot

• Manufacturer: Square D
• Part Number: BDA34100Y
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 100 A
• Voltage Rating: 480 V
• Number of Poles: 3
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Ideal applications and use cases

• New installations and panel upgrades in commercial spaces, data centers, offices, and light industrial facilities requiring 3‑phase, 480 V protection.
• Field replacements in existing panelboards that support plug-in breakers, reducing downtime and maintaining system reliability.
• Residential-commercial crossover projects where stable thermal-magnetic protection is needed for critical branch circuits.

Choosing the Square D BDA34100Y means prioritizing reliability, fast serviceability, and compatibility within your Square D ecosystem. For projects where quick upgrades, predictable protection, and scalable 3‑phase performance matter, this 100 A, 480 V, 3‑pole plug-in breaker is a precise, purpose-built solution.