Siemens LGG3B100L - 100 A, 600 V, 3-Pole Circuit Breaker | AmpState

Siemens LGG3B100L is a 100 A, 600 V, 3-pole molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and loadcenters. Built for reliable performance in demanding electrical environments, this breaker helps protect both equipment and people by interrupting fault currents quickly and safely.

Key advantages that set the LGG3B100L apart

• Compact molded-case design maximizes panel space, making it easier to fit multiple breakers in tighter electrical enclosures without compromising protection.
• Thermal-magnetic trip unit provides stable, repeatable protection across a range of loads, reducing nuisance trips and improving reliability over time.
• 3-pole configuration enables simultaneous protection of three conductors, ideal for 3-phase systems or multi-wire branch circuits in a single, integrated device.
• OEM panel compatibility designed to drop into matching Siemens loadcenters and panelboards, simplifying upgrades, replacements, or expansions.
• Versatile for diverse settings suitable for residential, commercial, and light industrial applications where space and performance matter.

Technical snapshot

• Amperage rating: 100 A
• Voltage rating: 600 V
• Number of poles: 3
• Type: Thermal-magnetic molded case circuit breaker
• Part number: LGG3B100L

Practical use cases

• Protect branch circuits in commercial panels where higher current protection and compact space-saving are priorities.
• Upgrade or replace aging breakers in residential or light industrial panelboards while maintaining compatibility with Siemens OEM equipment.
• Support 3-phase installations or multi-wire branch circuits that require coordinated protection across three conductors.

Why choose this breaker for your panel

By combining a space-efficient design with a reliable thermal-magnetic trip, the LGG3B100L delivers predictable protection against overloads and short circuits. Its 600 V rating supports a broad range of commercial and industrial applications, while the 3-pole configuration simplifies wiring layouts and ensures synchronized trip behavior. When paired with matching OEM loadcenters or panelboards, it offers a seamless, long-lasting protection solution that reduces downtime and simplifies maintenance.

Installation and best-use practices

• Verify panelboard compatibility with Siemens OEM components before installation.
• Ensure the electrical system voltage does not exceed 600 V and that the load does not exceed 100 A per circuit.
• Follow fabricante installation instructions for torque and terminal clearance to maintain optimal performance.
• Use in environments within its rated specifications (residential, commercial, or light industrial) to maximize reliability and longevity.