Siemens LGB2B020B Circuit Breaker – VL Series – 20A – 2 Pole – 600VAC – Thermal Magnetic – Bolt-On – Panelboard Mount

The Siemens LGB2B020B is a VL Series molded case circuit breaker designed for reliable overload and short-circuit protection in commercial, institutional, and industrial power distribution systems. Rated at 20A and 600VAC, this 2-pole breaker is suitable for single-phase applications requiring compact design, high interrupting capability, and dependable performance.

Equipped with a thermal-magnetic trip unit featuring Long-Time and Instantaneous (LI) protection functions, the LGB2B020B provides effective protection against overload conditions and fault currents. It is built on the Siemens LGB (G-frame) platform and is designed for panelboard mounting applications requiring high fault current ratings in a compact footprint.

This model includes load-side lugs only (TC1Q1) and supports copper/aluminum wiring within the specified wire range, ensuring secure and flexible installation. Its UL listing and high interrupting capacity make it suitable for demanding electrical distribution environments.

Specifications

• Brand: Siemens Breakers
• Part Number: LGB2B020B
• Series: VL Series
• Type: LGB Molded Case Circuit Breaker
• Frame Type: G Frame (LGB)
• Category: Molded Case Circuit Breaker
• Mounting Type: Bolt-On
• Installation Type: Panelboard Mounting
• Protection Type: Thermal Magnetic
• Trip Functions: LI – Long-Time and Instantaneous
• Terminal Configuration: Load Side Lugs Only (TC1Q1)

Electrical Ratings

• Current Rating: 20A
• Voltage Rating: 600VAC
• Number of Poles: 2 Pole
• Phase: 1 Phase
• Interrupting Capacity: 100kA @ 240VAC (as rated basis)
• Additional Ratings: 65kA @ 480Y/277V, 14kA @ 600Y/347V
• Wire Range: 14–10 AWG (Cu/Al)

Construction

• Compact molded case design
• VL Series G-frame construction
• Thermal-magnetic trip mechanism
• Panelboard mounting configuration
• High interrupting capacity design
• Load-side lug termination only
• Durable industrial-grade housing
• Designed for high-fault current distribution systems

Functions

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

Dimensions

• Height: 2 in
• Width: 5.4 in
• Depth: 2.8 in
• Weight: 1.85 lbs

Standards

• UL Listed
• CSA Approved

Applications

• Commercial electrical distribution systems
• Industrial panelboards
• Branch circuit protection
• High fault-current installations
• Lighting and control circuits
• Institutional facilities

Returns are easy

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

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