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Circuit Breaker
Siemens | LGB3B125B | Circuit Breaker | 125A | 3-Pole | 600V | Bolt-On
| Part Number | LGB3B125B |
| Amperes | 125 |
| Poles | 3 |
| Voltage | 600 |
| Product Type | Circuit Breaker |
Regular price
$1,409.00
Sale price
$1,409.00
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 | LGB3B125B | Circuit Breaker | 125A | 3-Pole | 600V | Bolt-On
Regular price
$1,409.00
Sale price
$1,409.00
Regular price
Unit price
Product description
Shipping
Engineered by Siemens, the LGB3B125B circuit breaker delivers robust protection for 3‑phase electrical systems up to 600V. With a 125A rating and three poles, this bolt‑on unit is built for demanding maintenance, retrofit, and replacement tasks where exact compatibility matters.
- Amperage: 125A
- Poles: 3‑Pole
- Voltage rating: 600V
- Mounting: Bolt‑On
- Part reference: LGB3B125B (best compatibility reference)
Why this design stands out: the LGB3B125B pairing from Siemens gives you reliable interruption protection for three‑phase, high‑voltage circuits, with a bolt‑on configuration that ensures a secure, vibration‑resistant connection in compatible panels. This makes it particularly well suited for retrofit projects, service upgrades, and replacement of aging equipment where panel design requires a bolt‑on style.
Ideal use cases
- Maintenance shutdowns and component replacements in industrial or commercial panels.
- Retrofit projects where upgrading protection for 3‑phase 600V circuits is required.
- Stocking spare breakers for critical equipment facing frequent service intervals.
Installation and compatibility tips
Before ordering, confirm fit and ratings—the part number LGB3B125B is the most reliable reference for compatibility with your panel. Ensure your panel supports bolt‑on mounting and 3‑pole, 600V protection to maximize safety and performance.
What problems it solves
By providing precise overcurrent protection for 3‑phase 600V circuits, this Siemens breaker helps prevent equipment damage, reduces the risk of electrical faults, and supports safe, predictable shutdowns during maintenance and upgrades.
Practical guidance for best results
- Match the breaker to an existing panel’s mounting style and voltage rating to avoid compatibility issues.
- Keep spare parts on hand for critical lines to minimize downtime during service windows.
- Handle with standard electrical safety procedures during installation to ensure secure, torque‑appropriate mounting.
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What Our Customers Say
General feedback we often hear from customers purchasing industrial electrical parts.
Verified
Lead time was reasonable and the part matched expectations when it arrived.
Procurement · Ontario
Verified
Good value for industrial use. Customers mention easy installation.
Service tech · Field work
