Siemens NEB2B100B - 100 A, 600 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Siemens NEB2B100B is a rugged 2-pole bolt-on molded case circuit breaker engineered to shield your electrical systems from overcurrent and short circuits. With a 100 A rating and a 600 V capacity, this breaker is built to handle demanding panelboard and loadcenter applications while delivering reliable, repeatable protection across residential, commercial, and light industrial environments.

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection, helping maintain consistent contact and reducing the risk of loose connections in busy service panels.
• Thermal-magnetic trip unit delivers stable, repeatable protection by combining overload (thermal) sensing with fast magnetic trip for short circuits, minimizing nuisance trips while safeguarding downstream circuitry.
• OEM-path compatibility ensures straightforward upgrades and replacements, compatible with matching Siemens OEM load centers and panelboards for a seamless installation experience.
• 2-pole design for comprehensive protection safeguards both conductors in a circuit, ideal for feeder and branch circuit setups that require synchronized disconnection during faults.

This NEB2B100B breakout is ideal for installations where dependable branch-circuit protection is critical—whether upgrading an aging panel, expanding a commercial or light industrial distribution, or integrating into a new build where Siemens OEM compatibility matters. Its bolt-on format means a secure, durable connection in panels exposed to vibration or routine maintenance, helping ensure long-term performance with fewer call-backs.

Technical snapshot

• Manufacturer: Siemens
• Part Number: NEB2B100B
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 100 A
• Voltage Rating: 600 V
• Number of Poles: 2
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Choose Siemens NEB2B100B for a dependable, OEM-aligned solution that blends robust mechanical design with precise protective action. It’s a practical choice for installers and facility managers who value consistent performance, ease of integration, and long-term reliability in panelboards and loadcenters.