{"product_id":"siemens-5sx2103-8-3a-1p-400v-circuit-breaker","title":"Siemens 5SX2103-8 Circuit Breaker, 3A, 1-Pole, 400V","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens 5SX2103-8 Circuit Breaker—an intentionally compact, dependable protection device built for industrial electrical service, maintenance, and replacement projects. With a precise 3 A rating and a single-pole design, it delivers targeted overcurrent protection for individual circuits within 400 V networks, helping minimize downtime and keep critical equipment safe.\u003c\/p\u003e \u003ch3\u003eWhy the 5SX2103-8 stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eExact part-number compatibility:\u003c\/strong\u003e The 5SX2103-8 is designed to integrate with Siemens panels and related systems. Verify fit by part number to ensure seamless operation in your application.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eLow-current protection for reliability:\u003c\/strong\u003e A 3 A rating provides selective protection for control circuits, instrumentation feeders, and other low-load circuits, reducing unnecessary trips in busy industrial environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eEfficient single-pole form factor:\u003c\/strong\u003e The 1-pole design simplifies installation in standard control panels, MCCs, and distributed circuits where space and simplicity matter.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e400 V readiness:\u003c\/strong\u003e Rated for 400 V systems, this breaker is suited to common industrial and European-style power distributions, delivering consistent performance under demanding conditions.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTrusted Siemens engineering:\u003c\/strong\u003e Backed by Siemens’ engineering standards, this breaker emphasizes reliability, compatibility, and long service life in industrial settings.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eReplacement and retrofit projects in Siemens-based panels and switchgear within manufacturing or process environments.\u003c\/li\u003e \u003cli\u003eProtection for small feeders, control circuits, and instrumentation lines in 400 V distribution networks.\u003c\/li\u003e \u003cli\u003eNew installations in industrial automation setups where a precise 3 A, 1-pole breaker is appropriate for the circuit being protected.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eHow to ensure fit and install\u003c\/h3\u003e\n\u003cp\u003eBefore installation, confirm compatibility by the part number 5SX2103-8 and review your application requirements. If you’re unsure about compatibility or need help matching a part number to your equipment, send us a message and we’ll assist in validating fit for your specific setup.\u003c\/p\u003e \u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Siemens\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e 5SX2103-8\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 3 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 1\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 400 V\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46416141123746,"sku":"5SX2103-8","price":460.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-5sx2103-8-circuit-breaker-3a-1-pole-400v-breakers-920.webp?v=1789240549","url":"https:\/\/www.ampstate.com\/products\/siemens-5sx2103-8-3a-1p-400v-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}