{"product_id":"siemens-5sj4104-7hg40-4a-1p-240v-circuit-breaker","title":"Siemens 5SJ4104-7HG40 Circuit Breaker, 4A, 1-Pole, 240V","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens 5SJ4104-7HG40 circuit breaker — a purpose-built protective device designed for industrial electrical service, maintenance, and replacement projects. With a single pole and a 4 A rating at 240 V, this breaker provides targeted overcurrent protection for small- to mid-sized circuits within commercial or light industrial panels.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eKey specifications at a glance\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e 5SJ4104-7HG40\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 4 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 1-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 240 V\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWhy choose a Siemens 5SJ4104-7HG40 for your project?\u003c\/strong\u003e Because it’s a genuine Siemens replacement designed to match the exact electrical characteristics of your existing panel, reducing installation risk and ensuring reliable protection for sensitive loads. This part is ideal when you need a precise, low-current protection device that fits in standard Siemens-compatible enclosures.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eUse cases\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eReplacing a worn or tripped breaker in an industrial control panel, switchgear, or service panel\u003c\/li\u003e \u003cli\u003eProtecting low-amperage circuits such as sensors, relays, and small automation equipment\u003c\/li\u003e \u003cli\u003eAs a ready-to-go spare part for maintenance crews and field technicians\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eCompatibility and installation notes\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eVerify fit by the exact part number (5SJ4104-7HG40) and by confirming your application requirements match (amperage, pole, and voltage).\u003c\/li\u003e \u003cli\u003eIf you’re unsure about compatibility, our team can help confirm fit — just send us a message and we’ll assist with part-number matching and recommendations.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003ePractical considerations\u003c\/strong\u003e:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eChoosing the correct amperage rating helps protect equipment without nuisance trips, balancing safety and uptime.\u003c\/li\u003e \u003cli\u003eUse in environments that require reliable, Siemens-manufactured protection for critical processes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46416147251362,"sku":"5SJ4104-7HG40","price":217.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_229276d9-908d-46df-93e5-6fe31866e0ff.png?v=1765492975","url":"https:\/\/www.ampstate.com\/products\/siemens-5sj4104-7hg40-4a-1p-240v-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}