Siemens 3TC1GG20 125A Circuit Breaker | AmpState

Meet the Siemens 3TC1GG20 125 A circuit breaker—built for everyday electrical work and trusted for reliable circuit protection in panelboards, load centers, and distribution networks. Available through AmpState, this exact part-number match is essential for maintenance teams, panel builders, and spare inventory where precision matters.

Why this 3TC1GG20 stands out

• Exact part-number alignment: Siemens 3TC1GG20 ensures you’re selecting a true replacement that fits your existing gear without adapters or guesswork.
• 125 A protection: Provides robust current protection for main or feeder circuits within residential, commercial, or light-industrial panels where reliable fault management matters.
• Designed for panelboards and distribution: A dependable choice for panel builders and installers handling electrical distribution across service panels, sub-panels, and other distribution configurations.
• Inventory-ready from AmpState: Streamlined procurement with ready stock and expert compatibility confirmation from our team—no guesswork, just a precise fit.

Practical uses and scenarios

Use this 3TC1GG20 breaker when upgrading an aging installation, stocking spare breakers for ongoing maintenance, or specifying exact replacements during panel builds. In projects where Siemens equipment forms the backbone of your electrical distribution, maintaining a precise part-number match reduces installation time and avoids compatibility issues down the line.

How AmpState supports you

Unsure about compatibility? Our team can help confirm fit against your panelboards, load centers, and distribution configurations. We’re your partner for reliable, traceable components with clear part numbers and dependable supply.

Specifications snapshot

Manufacturer: Siemens

Part Number: 3TC1GG20

Product Type: Circuit Breaker

Amperage: 125 A