Schneider Electric BDL26040 40A 2-Pole 347 V Circuit Breaker Potential Transformer

Meet the Schneider Electric BDL26040 — a 40 A, 2-pole circuit breaker with an integrated potential transformer, engineered to deliver dependable protection and precise metering in demanding electrical panels. This isn’t a generic breaker; it’s a purpose-built solution for modern distribution networks where monitoring data and rapid fault isolation go hand in hand.

Designed for commercial and light-industrial environments, the BDL26040 combines robust protection with measurement-ready capability. The built-in potential transformer provides a direct, accurate sensing signal for meters and protection relays, reducing wiring complexity and speeding up commissioning in new or retrofit panels.

Key features and benefits

• Integrated potential transformer for metering and sensing: obtain reliable voltage samples right at the breaker, enabling seamless connection to energy meters and relay logic without extra external CTs.
• 40 A current rating, 2-pole construction: protects two conductors, supports balanced loading, and simplifies coordination with upstream protection devices.
• 347 V voltage rating: optimally suited for common 480Y/277 V commercial installations and other 347 V class systems, ensuring compatibility across a wide range of facilities.
• Compact, dependable Schneider Electric design: part of a trusted protection portfolio, ensuring reliability and straightforward integration with Schneider panels and accessories.
• Streamlined installation and maintenance: fewer components to wire and fewer potential fault points, helping reduce commissioning time and ongoing servicing.

Ideal use cases

• New or retrofit electrical panels in offices, data centers, and light industrial facilities where metering visibility is essential for energy management and demand response programs.
• Feeder protection for transformers or critical circuits where a built-in sensing path simplifies relay coordination and protection schemes.
• Space-constrained distribution environments that benefit from a reduced wiring footprint without sacrificing monitoring capability.
• Systems operating at 347 V nominal voltage, providing straightforward integration with common commercial power architectures.

Specifications at a glance

• Part Number: BDL26040
• Manufacturer: Schneider Electric
• Current rating: 40 A
• Poles: 2
• Voltage rating: 347 V
• Type: Circuit breaker with integrated potential transformer

Practical considerations

• Confirm compatibility with your panel and protection scheme to ensure the integrated transformer aligns with your metering and relay inputs.
• Plan wiring routes to connect the potential transformer secondary to metering or relay devices, minimizing loop area and ensuring clean signal integrity.
• Follow installer guidance for torque values and auxiliary connections to maintain reliability over the device’s service life.