{"product_id":"siemens-mbkjd3400-circuit-breaker","title":"Siemens MBKJD3400 - Circuit Breaker | AmpState","description":"\u003cdiv\u003eSiemens MBKJD3400 molded case circuit breaker delivers dependable, precise protection for modern electrical systems. Designed to shield panelboards and load centers from overcurrent and short-circuit conditions, this unit keeps critical circuits safe while helping your distribution panel stay organized and reliable. Why the MBKJD3400 stands out\n- Compact molded case design: Optimizes panel space without compromising protection. Its streamlined form allows easier layout in crowded or compact panels, helping you fit more circuits into the same footprint.\n- Thermal-magnetic trip unit: Delivers stable, repeatable protection across a range of operating conditions. The combination of thermal and magnetic tripping responds quickly to short circuits while preventing nuisance trips from normal load fluctuations.\n- OEM-compatible performance: Engineered to integrate with matching Siemens load centers and panelboards, ensuring consistent trip curves, coordinated protection, and straightforward replacement.\n- Versatile for multiple environments: Ideal for residential installations, small commercial setups, and light industrial applications where reliable branch circuit protection is essential. What problems it solves\n- Reduces the risk of electrical fires and equipment damage by reliably interrupting fault currents and overloaded circuits.\n- Simplifies panel planning with a compact footprint, freeing space for future expansions.\n- Improves maintenance confidence: Siemens’ trip technology provides predictable performance, so you know how the breaker will respond under fault or overload scenarios.\n- Streamlines upgrades and replacements: OEM compatibility minimizes compatibility concerns and simplifies ordering for existing Siemens panel systems. Who this is ideal for\n- Homeowners and residential electricians upgrading a subpanel or replacing an aging breaker where Siemens compatibility matters.\n- Commercial property managers and small-business technicians configuring distribution panels with dependable, cross-compatible protection.\n- Facility engineers overseeing light industrial panels who need consistent performance across varied loads. Technical highlights\n- Manufacturer: Siemens\n- Part Number: MBKJD3400\n- Type: Thermal-magnetic molded case circuit breaker\n- Application: Branch circuit overcurrent and short-circuit protection\n- Compatibility: Matching OEM load centers and panelboards How to use MBKJD3400 effectively\n- Confirm panel compatibility: Ensure the MBKJD3400 is the correct type and rating for your Siemens panelboard; compatibility supports proper trip coordination and warranty validity.\n- Plan for space and layout: Take advantage of the compact design to optimize wire routing and labeling inside the panel. Clear labeling improves troubleshooting and future maintenance.\n- Maintain clear, accessible labeling: Document circuit roles, amperage, and protected equipment to speed future servicing and upgrades.\n- Replace like-for-like: When upgrading or replacing, use the same part number (MBKJD3400) or a Siemens-approved equivalent to preserve protection characteristics. Practical tips for installation and care\n- Work with a licensed electrician to ensure safe handling and proper torque on terminations.\n- Inspect the trip unit and enclosure for any signs of wear or damage during replacement; replace if any doubt arises about protection integrity.\n- Keep a record of panel model, breaker part numbers, and installation date for future service events and warranty considerations. With the Siemens MBKJD3400, you’re choosing a purpose-built, OEM-compatible solution that emphasizes space efficiency, precise protection, and dependable performance across residential, commercial, and light industrial applications. It’s more than just a breaker—it’s a smart, reliable partner in keeping electrical systems safe, organized, and ready for future needs.\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355133726882,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-mbkjd3400-circuit-breaker-ampstate-breakers-583.webp?v=1788734064","url":"https:\/\/www.ampstate.com\/products\/siemens-mbkjd3400-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}