Siemens D11CFU2 110A 2-Pole Circuit Breaker

The Siemens D11CFU2 110A 2-Pole Circuit Breaker is built for dependable protection of high-demand 240V circuits in commercial and heavy-residential installations. With a 110-amp rating and a two-pole design, it ensures both live conductors are interrupted together, minimizing the risk of damaging faults and electrical fires.

Key features at a glance

• Part Number: D11CFU2
• Current rating: 110 A
• Poles: 2
• Voltage context: suited for Siemens panels that accept two-pole breakers designed for 240V service

Why this breaker stands out

Designed by Siemens to integrate seamlessly with compatible Siemens load centers and panelboards, the D11CFU2 delivers consistent, predictable tripping behavior across demanding loads. The 2-pole construction protects both hot legs of a circuit, ensuring balanced protection for equipment like large appliances, air-handling units, and other high-current feeders. Its robust build anchors reliability in environments where uptime and safety matter most.

Ideal use cases

• Feeding 240V circuits in commercial offices, retail spaces, or light manufacturing facilities
• Protecting large electrical feeders that require a single device to monitor two hot legs
• Replacement or upgrade for Siemens panels that specify the D11CFU2 family for 110A, two-pole protection

Installation and compatibility tips

• Verify that your Siemens panel or distribution board is labeled to accept D11CFU2 two-pole devices and supports a 110A rating
• Before installation, shut off main power and follow standard safety procedures for working inside electrical panels
• Ensure the physical fit aligns with the panel’s breaker slots and bus connection type to avoid improper seating

Choosing the Siemens D11CFU2 means opting for a trusted, purpose-built solution when you need reliable two-pole protection at 110 amps. It’s a precise fit for high-draw feeders and critical loads where dual-leg interruption is essential for safe, compliant electrical operation.