Siemens NGB1B020B Circuit Breaker – VL Series – NGB Frame – 20A – 1 Pole – 347VAC – Bolt-On – Thermal Magnetic

The Siemens NGB1B020B is a VL Series molded case circuit breaker designed for compact panelboard applications requiring reliable low-current circuit protection. Rated at 20A and 347VAC, this 1-pole breaker is built on the NGB frame platform and is suitable for single-phase electrical distribution systems.

Equipped with a thermal-magnetic trip unit, the NGB1B020B provides Long-Time and Instantaneous (LI) protection, ensuring dependable response to overload and short-circuit conditions. Its bolt-on mounting design supports secure installation in panelboards and allows compatibility with reverse feed applications where applicable.

This breaker is UL listed and engineered for consistent performance and high interrupting capacity in commercial and industrial electrical systems.

Specifications

• Brand: Siemens / ITE
• Part Number: NGB1B020B
• Series: VL Series
• Frame Type: NGB Frame
• Category: Molded Case Circuit Breaker
• Mounting Type: Panelboard Bolt-On
• Configuration: 1 Pole
• Phase: 1 Phase
• Protection Type: Thermal Magnetic
• Trip Functions: LI – Long-Time and Instantaneous

Electrical Ratings

• Current Rating: 20A
• Voltage Rating: 347VAC
• Interrupting Capacity: 25kA @ 277VAC
• Application Suitability: Reverse feed capable (panelboard dependent)

Construction

• Compact NGB frame molded case design
• Bolt-on mounting system for panelboards
• Thermal-magnetic trip mechanism
• Load side lugs included
• Durable industrial-grade enclosure

Functions

• Overload protection
• Short-circuit protection
• Long-time delay protection
• Instantaneous fault protection
• Circuit switching and isolation

Dimensions

• Height: 1 in
• Width: 5.4 in
• Depth: 2.8 in
• Weight: 0.85 lb

Applications

• Commercial electrical panelboards
• Industrial distribution systems
• Lighting and control circuits
• Single-phase branch circuit protection
• Compact low-voltage installations
• Reverse feed panelboard applications

Returns are easy

You may return items within 30 days of delivery for a refund.

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