Siemens WB3100 100A 3P 240V Circuit Breaker, NEMA 3R | AmpState

The Siemens WB3100 100A 3P 240V Circuit Breaker, NEMA 3R is built to safeguard your electrical distribution with dependable performance. Designed for panelboards, load centers, and rugged outdoor environments, this 3-pole breaker provides precise protection for three‑phase 240V circuits while withstanding the demands of real-world installations.

Ideal for maintenance teams, panel builders, and inventory managers who need a direct part-number match, the WB3100 is a smart choice when reliability and compatibility matter. Available from AmpState, this part helps you minimize downtime and streamline procurement by ensuring you’re selecting the exact Siemens component your system requires.

Key specifications at a glance

• Manufacturer: Siemens
• Part Number: WB3100
• Product Type: Circuit Breaker
• Amperage: 100 A
• Poles: 3
• Voltage: 240 V
• Enclosure Rating: NEMA 3R
• Availability: AmpState

Why this matters for your projects

Three-pole protection at 240V is essential for safe, reliable three-phase distribution. The NEMA 3R rating signals readiness for outdoor and semi-exposed installations, reducing concerns about weather and environmental exposure. With a direct fit to Siemens systems, this WB3100 minimizes guesswork during replacements and new builds alike.

Use cases and practical benefits

• Stock a dedicated spare for panelboards and load centers to cut downtime during maintenance or emergency repairs.
• Specify for new electrical distribution installations where a precise 100A, 3P, 240V solution is required.
• Maintain clean, organized inventory by using a validated part number that matches your Siemens-based panels.
• Leverage the reliability of Siemens components to support long-term system performance and safety compliance.

If you’re unsure about compatibility, AmpState is ready to assist with fit confirmation and part-number verification to ensure a seamless match for your panelboard or distribution setup.

Elevate your protection strategy with the Siemens WB3100—a purpose-built, three‑pole 100 A breaker designed for robust, real-world use. Add it to your cart from AmpState and keep your electrical distribution running smoothly and safely.