{"product_id":"siemens-ngg3b125-125a-600v-3-pole-circuit-breaker","title":"Siemens NGG3B125 - 125 A, 600 V, 3-Pole Circuit Breaker | AmpState","description":"\u003cdiv\u003eSiemens NGG3B125 is a compact, reliable 3-pole molded case circuit breaker designed to protect your electrical systems from overcurrent and short circuits in panelboards and loadcenters. With a 125A rating and a 600V handle, it’s built to handle demanding residential, commercial, and light industrial applications without taking up precious panel space. Key reasons to choose the NGG3B125\n- Space-efficient design: The compact molded case format makes it easier to fit into tighter panels, helping you maximize cabinet real estate without sacrificing protection.\n- Predictable protection with a thermal-magnetic trip: The integrated trip unit delivers stable, repeatable response to both overloads and short circuits, reducing nuisance trips and helping safeguard connected equipment.\n- Seamless OEM compatibility: Engineered to work with matching Siemens OEM loadcenters and panelboards, ensuring a reliable fit, proper electrical coordination, and straightforward installation.\n- Versatile for three-phase applications: As a 3-pole breaker, it’s well-suited for three-phase distribution circuits common in commercial spaces and light industrial setups, delivering consistent protection across all phases. What this part does for your project\n- Branch circuit protection: Guards downstream conductors and devices from overloads that could cause insulation damage or fire, by interrupting excessive current before damage occurs.\n- Short-circuit safeguard: Responds quickly to high fault currents, isolating the affected circuit to minimize equipment damage and power disruption.\n- Quick, confident replacements: The NGG3B125 is designed for straightforward replacement in compatible Siemens panels, helping reduce downtime during maintenance or upgrades. Technical snapshot\n- Manufacturer: Siemens\n- Part Number: NGG3B125\n- Type: Thermal-magnetic molded case circuit breaker\n- Amperage Rating: 125 A\n- Voltage Rating: 600 V\n- Number of Poles: 3\n- Application: Branch circuit overcurrent and short-circuit protection\n- Compatibility: Designed to align with matching OEM Siemens loadcenters and panelboards Ideal use cases\n- Upgrading service panels in light commercial spaces, such as offices, retail displays, and small warehouses, where three-phase distribution is needed.\n- Replacing aging or undersized breakers in Siemens panelboards to restore reliable protection with a component designed for the same footprint and electrical characteristics.\n- New installations where a robust 3-pole, 125A protection device is warranted for 600V distribution networks. Practical installation and usage tips\n- Verify panel compatibility before installation to ensure a seamless fit with your specific Siemens loadcenter or panelboard.\n- When replacing an existing breaker, confirm the bus stab and terminal torque requirements match the NGG3B125’s design for secure connections and reliable trip performance.\n- For equipment longevity, ensure proper circuit labeling and consistent protection coordination with adjacent protective devices in the same panel.\n- Consider the 3-pole configuration for balanced three-phase loads to optimize protection and breaker operation across all phases. Compared to generic overcurrent protection options, the Siemens NGG3B125 provides a purpose-built combination of space efficiency, stable thermal-magnetic trip behavior, and OEM-compatible integration. This means fewer installation hassles, more predictable protection, and a dependable path to maintaining power reliability in your panel installations. If you’re stocking or upgrading Siemens panels, the NGG3B125 125A, 600V, 3-pole molded case circuit breaker stands out as a practical, high-confidence choice for safeguarding equipment and ensuring steady operation in a range of residential, commercial, and light industrial environments.\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355152208034,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens_breaker_and_panel_a3aea93c-c9a3-45b9-b04e-e175544a0531.png?v=1764689640","url":"https:\/\/www.ampstate.com\/products\/siemens-ngg3b125-125a-600v-3-pole-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}