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Siemens VL Series NGB2B050B

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NGB2B050B

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The Siemens NGB2B050B is a molded case circuit breaker from the VL Series, designed to operate effectively in 1-phase systems. Rated for 50 amperes and 347/600 volts AC, it guarantees valid circuit protection thanks to its thermal magnetic trip unit.

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Technical specifications for NGB2B050B

ManufacturerSiemens
Product TypeMolded Case Circuit Breaker
Product LineVL Series
Part NumberNGB2B050B
UPC783643414174
Poles Quantity2 Poles
Operating Frequency50 to 60 Hertz
Mounting TypePanel Mount
Amperage Rating50 Amperes
Operating Voltage347/600 Volts AC
Terminal Connection TypeLoad Lugs
Trip Unit TypeThermal Magnetic Trip Unit
Interrupt Rating25 kA at 277/480 Volts AC; 14 kA at 347/600 Volts AC
Rated Phase1-Phase
Connectable Conductor Cross-Sections8 to 1/0 AWG for Copper; 8 to 2/0 AWG for Aluminum
ApprovalsIEC, NOM, UL, and CSA-Certified
Protection FunctionsLI - Long-Time and Instantaneous
Type of FrameNGB Frame
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Siemens has engineered the NGB2B050B molded case circuit breaker as part of its VL Series. This device is rated at 50 Amperes and can handle operational voltages of 347/600 Volts AC. Designed primarily for panel mounting, it hosts a two-pole configuration, making it suitable for single-phase applications.

With an operational frequency range of 50 to 60 Hertz, this circuit breaker is versatile in its setting. It features a thermal magnetic trip unit that offers protection against both long-time overloads and instantaneous spikes. The interrupt ratings are noteworthy as they handle fault currents effectively; 25 kiloamperes at 277/480 volts AC and 14 kiloamperes at 347/600 volts AC.

The NGB2B050B also supports load lug terminal connections for reliable electrical engagement. In terms of conductor cross-sections, it accommodates copper wires from 8 AWG to 1/0, and for aluminum wires, it supports 8 AWG to 2/0. With multiple certifications including IEC, NOM, UL, and CSA, this circuit breaker meets stringent safety standards, reinforcing its suitability for diverse applications.