Siemens LGG3B020L - 20 A, 600 V, 3-Pole Circuit Breaker | AmpState

Meet the Siemens LGG3B020L — a 20A, 600V, 3-Pole molded case circuit breaker designed to shield your electrical system from overcurrent and short circuits. Built for reliable performance in panelboards and load centers, this unit makes efficient use of space without sacrificing protection.

• Three-pole, 20A, 600V — robust protection for three-phase circuits in commercial, industrial, and residential settings.
• Thermal-magnetic trip unit — delivers stable, repeatable protection for both overloads and short-circuit events, reducing nuisance trips and equipment wear.
• Compact molded-case design — maximizes panel space, making it easier to fit into tight electrical enclosures and streamline wiring layouts.
• OEM-ready compatibility — designed to be fully compatible with matching Siemens OEM load centers and panelboards for seamless integration.
• Versatile application — suitable for residential, commercial, and light industrial installations, especially where space efficiency and reliable protection matter.

Why this breaker stands out

The LGG3B020L combines a compact form factor with a dependable thermal-magnetic trip mechanism, delivering predictable response across a range of temperatures and electrical disturbances. Use it to protect feeders, branch circuits, and three-phase equipment where a single device must可靠ly handle both overload and short-circuit conditions. By choosing a Siemens LGG3B020L, you’re opting for a proven solution that pairs with compatible Siemens panelboards to maintain consistent protection characteristics across your electrical system.

Ideal use cases

• Replacing aging or malfunctioning breakers in existing Siemens panelboards and load centers
• Three-phase feeders in small commercial spaces with limited panel footprint
• Motor circuits for light industrial equipment, HVAC systems, and other three-phase loads requiring reliable protection
• New installations where space-saving design and precise trip performance are priorities

Compatibility and installation notes

To maintain optimal performance, pair the LGG3B020L with matching Siemens OEM load centers and panelboards. Ensure proper alignment with the enclosure’s bus stabs and mounting rails, and follow standard electrical practices for three-pole devices. This unit is intended for branch circuit overcurrent and short-circuit protection in appropriate industrial and commercial environments.

Technical specifications

• Manufacturer: Siemens
• Part Number: LGG3B020L
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 20A
• Voltage Rating: 600V
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Available through AmpState, the Siemens LGG3B020L 3-Pole Circuit Breaker offers reliable protection for three-phase systems while preserving valuable panel space. If you’re upgrading panel capacity or replacing an aging breaker, this unit delivers consistent performance and straightforward integration with your Siemens infrastructure.