Siemens NEB2B030B - 30 A, 600 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Meet the Siemens NEB2B030B — a robust 30A, 600V, 2-pole bolt-on molded case circuit breaker designed to deliver dependable branch circuit protection in panelboards and load centers. Built for residential, commercial, and light industrial environments, this breaker keeps power safe and interruptions rare, even in demanding installations.

What makes this breaker stand out

• Secure bolt-on mounting provides a rigid, vibration-resistant bus connection, minimizing movement and loosening in busy electrical rooms and panels.
• Thermal-magnetic trip unit delivers stable, repeatable protection by combining thermal overload sensing with magnetic short-circuit protection for fast, decisive trips.
• OEM-compatible design works with matching Siemens load centers and panelboards, ensuring proper fit, coordinated protection, and reliable operation.
• 2-pole configuration safeguards both hot legs in 240V circuits, enabling clean, common-trip protection for multi-wire branch circuits.

Ideal use cases

Use the NEB2B030B when you need solid, code-compliant protection for branch circuits in Siemens-based installations. It’s a smart choice for:

• Residential subpanels and main distribution panels requiring 30A protection
• Commercial lighting and receptacle circuits where reliable interruption control matters
• Light industrial panels and machine feeds that demand consistent thermal-magnetic protection

Technical at a glance

• Manufacturer: Siemens
• Part Number: NEB2B030B
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 30A
• Voltage Rating: 600V
• Number of Poles: 2
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Whether you’re upgrading an aging panel, stocking spare parts for a Siemens-based installation, or planning a new build that requires dependable protection with straightforward maintenance, the NEB2B030B delivers precise protection, easy installation, and lasting performance. Add it to your panel or load center lineup and experience the reliability Siemens is known for in everyday electrical distribution.