{"product_id":"siemens-mbkjd3-400a-circuit-breaker","title":"Siemens MBKJD3 400A Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens MBKJD3 400A Circuit Breaker — a purpose-built protection device for panelboards, load centers, and electrical distribution networks. When retrofit projects require a consistent part number for bulk replacements and predictable maintenance planning, MBKJD3 delivers reliability you can count on, now available from AmpState.\u003c\/p\u003e \u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003e400 A interrupting capacity\u003c\/strong\u003e for high-demand feeders and main circuits, providing dependable fault clearance and protecting equipment downstream.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSiemens engineering, guaranteed fit\u003c\/strong\u003e designed for seamless installation in Siemens panelboards and load centers, preserving original electrical characteristics and trip behavior.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart-number consistency for retrofit and procurement\u003c\/strong\u003e MBKJD3 uses a stable identifier, simplifying stocking, ordering, and documentation across maintenance schedules.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFast sourcing from AmpState\u003c\/strong\u003e with reliable availability to minimize downtime and keep project timelines on track.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eClear compatibility support\u003c\/strong\u003e if you’re unsure about fit or need to verify the part number, AmpState specialists can help confirm compatibility and suitability for your specific panel configuration.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal Use Scenarios\u003c\/h3\u003e\n\u003cp\u003eUse MBKJD3 when replacing or upgrading protection in existing Siemens systems, including commercial electrical rooms, industrial distribution panels, and retrofit jobs where long-term part availability matters. It’s especially valuable when you need to maintain exact part-number continuity for maintenance logs, warranty records, and procurement history.\u003c\/p\u003e \u003ch3\u003eWhy This Breaker Stands Out\u003c\/h3\u003e\n\u003cp\u003eBeyond basic specs, the MBKJD3 is built for reliability in high-current environments. Its Siemens pedigree means consistent performance across assemblies, with predictable tripping and coordination within your distribution scheme. By choosing MBKJD3, you align with a robust ecosystem of Siemens accessories and compatible components, reducing the risk of misfits or mismatched replacements in the field.\u003c\/p\u003e \u003cp\u003eReady to confirm compatibility or place an order? Message us and we’ll help you verify fit and get you on the schedule for your retrofit or maintenance project.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46411122081954,"sku":"MBKJD3","price":3154.0,"currency_code":"CAD","in_stock":true}],"url":"https:\/\/www.ampstate.com\/products\/siemens-mbkjd3-400a-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}