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circuit-breaker
Siemens LGB3B100B 100A 3P 600V Circuit Breaker | AmpState
| Part Number | LGB3B100B |
| Amperes | 100 |
| Poles | 3 |
| Voltage | 600 |
| Product Type | circuit-breaker |
Regular price
$1,417.00
Sale price
$1,417.00
Regular price
Unit price
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Seamless online shopping experience guaranteed with easy shipping and returns policy.
Shop with Confidence: Our Products come with a Reliable Year-Long Warranty.
Siemens LGB3B100B 100A 3P 600V Circuit Breaker | AmpState
Regular price
$1,417.00
Sale price
$1,417.00
Regular price
Unit price
Product description
Shipping
Siemens LGB3B100B is a robust three-pole circuit breaker designed to protect complex electrical distribution setups. With a 100-amp rating and a 600-volt maximum, it delivers reliable overcurrent protection for panelboards and load centers across commercial, industrial, and utility-grade installations.
Ideal for replacement projects and spare stocking, this part helps keep your bill of materials aligned with the original equipment. When you need to match a legacy installation or preserve BOM integrity, LGB3B100B ensures you’re ordering the exact component the system was designed for.
From AmpState, this Siemens model ships ready for quick swap-outs and easy cross-reference. If you’re unsure about compatibility, message us and we’ll verify the fit against your panel schedule or original part number.
- Amperage: 100 A
- Poles: 3 (three-pole design for 3-phase circuits)
- Voltage rating: 600 V
- Manufacturer: Siemens
- Part number: LGB3B100B
Practical use cases:
- Replacement of aging 3P 100A breakers in commercial panels to restore reliable protection without altering wiring or bus configurations.
- Stocking spare units to minimize downtime in critical electrical rooms where a quick swap is essential.
- Maintaining BOM parity during panel refurbishment or upgrade projects, ensuring seamless maintenance and service schedules.
Installation and safety tips:
- Verify that the panelboard or load center accepts the LGB3B100B by checking the original part number and installation manual.
- Power down the system and follow lockout/tagout procedures before replacement.
- Handle the breaker by its handles, avoid touching internal contacts, and ensure proper seating in the bus stabs.
- Consult AmpState’s compatibility support if you’re migrating from a different model or if your panel uses a non-standard configuration.
Choose Siemens LGB3B100B for dependable, code-compliant circuit protection that keeps your electrical distribution up and running. Available now from AmpState.
Contact sales@ampstate.com
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What Our Customers Say
General feedback we often hear from customers purchasing industrial electrical parts.
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Arrived in good condition and helped keep our project on schedule.
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Exactly what most contractors expect from an industrial supplier.
Electrical · Commercial
