Siemens | BL2-040 | Circuit Breaker | 40A | 2-Pole | 240V | Plug-In

Siemens BL2-040 circuit breaker delivers dependable 40-amp, 240-volt protection in a compact, plug-in format. Engineered for maintenance, retrofit, and replacement projects, this 2-pole unit integrates with compatible Siemens panels while preserving the integrity and safety of your electrical system.

• Amperage: 40A
• Poles: 2-Pole
• Voltage: 240V
• Type: Plug-In
• Part number: BL2-040
• Ideal for: maintenance, retrofit, and replacement needs

What makes this Siemens model stand out is the plug-in design that enables quick, minimal-downtime swaps—crucial for service calls, upgrades, or unexpected outages. The 2-pole configuration provides balanced protection for 240V circuits, making it a reliable choice for commonly wired loads in residential or light commercial panels. When compatibility matters, the BL2-040 part number is your most reliable reference to ensure a proper fit and correct ratings.

• replacing a failed 2-pole 240V breaker, retrofit projects where a 40A circuit is required, or refreshing panels during maintenance.
• electricians, technicians, and homeowners performing panel maintenance or upgrades in Siemens-compatible systems.
• faster installation, predictable 40A protection, and a design that supports reliable circuit safety without panel modification.

Installation tips: Always shut off power at the main before working on the panel. Verify fit and ratings by cross-checking the panel labeling with the BL2-040 part number, and confirm that your panel accepts plug-in breakers of this style and amperage. Keep to the manufacturer’s guidelines and local electrical codes for a safe, compliant setup.

Note: Confirm fit and ratings before ordering. The BL2-040 part number is the best reference for compatibility, ensuring you get the right plug-in 40A, 2-pole 240V protection for your Siemens panel. Add this trusted replacement to your maintenance toolkit and reduce downtime on critical circuits.