Siemens NGB2B070B - 70 A, 600 V, 2-Pole Bolt-On Circuit Breaker | AmpState

Harness dependable branch circuit protection with the Siemens NGB2B070B, a 2-pole bolt-on molded case circuit breaker rated at 70 amperes and 600 volts. Engineered for panelboards and loadcenters, it delivers secure mounting, reliable trip performance, and OEM compatibility for residential, commercial, and light industrial installations.

• Secure bolt-on mounting: provides a rigid, vibration-resistant connection to the bus, reducing loosening and arcing in demanding environments.
• Thermal-magnetic trip: combining heat and magnetic sensing for stable, repeatable protection against overcurrent and short circuits.
• 2-pole, 70A, 600V: robust protection for multi-wire branch circuits and higher-energy loads.
• OEM-compatible: designed to work with matching Siemens OEM load centers and panelboards, ensuring a seamless fit and reliable performance.
• Versatile applications: suitable for residential, commercial, and light industrial applications where dependable protection matters.

• Manufacturer: Siemens
• Part Number: NGB2B070B
• Type: Thermal-magnetic molded case circuit breaker (MCCB)
• Amperage Rating: 70 A
• Voltage Rating: 600 V
• Number of Poles: 2
• Mounting Style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Ideal for electricians stocking replacement parts for Siemens-based panels, maintenance technicians updating panelboards in commercial spaces, and contractors outfitting light industrial installations that demand durable protection and quick, repeatable tripping behavior.

• Before installation, verify the panelboard specification matches the NGB2B070B and follow all safety procedures for de-energizing equipment.
• Ensure the bolt-on mounting surfaces are clean and undamaged to maximize the rigidity of the connection.
• Leverage the thermal-magnetic trip for predictable response: overload protection via the thermal element and rapid short-circuit interruption via the magnetic element.

Choose this Siemens NGB2B070B 2-pole bolt-on MCCB for reliable, OEM-aligned protection that stands up to vibration and demanding electrical loads. With its precise trip characteristics and robust mounting, it’s a practical, long-term upgrade for panel-based electrical systems—backed by AmpState’s commitment to genuine Siemens components.