{"product_id":"siemens-sj1-400a-3p-600v-circuit-breaker","title":"Siemens SJ1 400A 3P 600V Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Siemens SJ1 400A 3P 600V Circuit Breaker delivers rugged, reliable overcurrent protection for panelboards, load centers, and electrical distribution networks. This SJ1 model is a smart pick for maintenance teams, panel builders, and spare inventory when a direct part-number match matters for fast, accurate replacements.\u003c\/p\u003e \u003cp\u003eWhether you’re upgrading an existing installation or stocking for future service, the SJ1 provides a clear, compatible solution that aligns with Siemens-based systems. AmpState makes it straightforward to source this exact part, with support available to confirm fit and compatibility as needed.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Siemens\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e SJ1\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Circuit Breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 400 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 600V\u003c\/li\u003e\n\u003c\/ul\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eExact part-number matching\u003c\/strong\u003e simplifies procurement, minimizes configuration errors, and reduces downtime when swapping in a proven Siemens component.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePanelboard and load center ready\u003c\/strong\u003e—designed for protection duties across common electrical distribution setups, helping keep circuits safe and serviceable.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReliable supplier availability\u003c\/strong\u003e—AmpState stocks this SJ1 model so you can quickly locate the right part when time matters.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e Compatibility support\u003c\/strong\u003e—if you’re unsure about fit, we offer assistance to confirm compatibility and ensure a seamless replacement.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eIdeal for:\u003c\/strong\u003e maintenance and service teams performing panel upgrades or replacements in industrial facilities.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePerfect for:\u003c\/strong\u003e panel builders stocking spare inventory to support rapid installations and on-site repairs.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eUse case:\u003c\/strong\u003e retrofits or new builds requiring a 3-pole, 400 A protection device at 600 V within Siemens-based electrical distributions.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003ePractical tips for best results:\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eVerify that your panelboard or load center specifies a 3-pole, 400 A, 600 V device to ensure correct fit and protection level.\u003c\/li\u003e \u003cli\u003eCheck busbar configuration and mounting compatibility with the SJ1’s form factor to avoid installation delays.\u003c\/li\u003e \u003cli\u003eKeep a small stock of SJ1 spares in accessible locations to minimize downtime during outages or scheduled maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eIf you need help matching a part number or confirming compatibility, send us a message and we’ll help you confirm the fit for your Siemens-based system.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46410855645346,"sku":"SJ1","price":10.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_83963f7f-600e-419f-90c6-e7677089642b.png?v=1765492973","url":"https:\/\/www.ampstate.com\/products\/siemens-sj1-400a-3p-600v-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}