Siemens Q240GFCSA - 40 A, 240 V, 2-Pole Plug-In Circuit Breaker | AmpState

Meet the Siemens Q240GFCSA—a 2-pole, 40A, 240V plug-in molded case circuit breaker crafted for reliable branch circuit protection in panelboards and load centers. Built to streamline installation and maintenance, this breaker keeps your electrical distribution dependable and easy to service.

Fast, tool-friendly plug-in installation—the quick-connect design minimizes installation time and makes replacements straightforward. In busy service environments, less downtime means faster restoration of power and safer, more efficient panel maintenance.

Thermal-magnetic protection you can trust—this unit uses a thermal-magnetic trip mechanism that delivers stable, repeatable protection against overloads and short circuits. It adapts to varying load conditions, reducing nuisance trips while ensuring critical circuits stay safeguarded when it matters most.

OEM-compatible and ready for your panel—specifically engineered to be compatible with matching Siemens OEM load centers and panelboards, ensuring a secure fit and reliable operation within your distribution system.

Versatile across applications—ideal for residential, commercial, and light industrial settings where dependable overcurrent protection is essential. Whether used in a home service panel or a small commercial distribution board, this breaker helps keep circuits protected without compromising performance.

Technical snapshot

• Manufacturer: Siemens
• Part Number: Q240GFCSA
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 40A
• Voltage Rating: 240V
• Number of Poles: 2
• Mounting Style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection

Why this Siemens breaker stands out

• Rapid serviceability: The plug-in design reduces maintenance time and simplifies panel swaps or upgrades.
• Reliable protection: Thermal-magnetic trip technology provides consistent response to overloads and short circuits, improving overall panel reliability.
• Designed for real-world use: Compatibility with OEM load centers means fewer compatibility concerns during installation or replacement.
• Clear fit for common circuits: With a 40A rating at 240V, it’s well-suited for mid‑demand branch circuits that require robust protection without excessive interrupting capacity.

Ideal use cases

• Upgrading or replacing aging breakers in home panelboards and load centers.
• Installing new 40A branch circuits in light commercial panels or small industrial distribution boards.
• Maintenance-friendly protection for circuits serving lighting, receptacles, HVAC sub-panels, or other mid-range loads.

Installation and compatibility tips

Ensure the panelboard or load center is designed for plug-in molded case breakers of this type, and verify that the Q240GFCSA aligns with your OEM specifications. When replacing an existing breaker, power down the panel, confirm the circuit is de‑energized, and use proper PPE. The quick-plug design simplifies seating; press firmly until you hear or feel a secure connection, then restore power and test the protected circuit for proper operation.