{"product_id":"siemens-miniature-circuit-breaker-b-curve-2-pole-400v-50a","title":"Siemens Miniature circuit breaker, B-curve, 2-pole, 400V, 50A","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Siemens 5SL4250-6 is the Siemens SENTRON 5SL4 Miniature Circuit Breaker, 2-pole, 50 A, B-characteristic. It is designed for overload and short-circuit protection in AC electrical installations — ideal for branch-circuit protection in residential, commercial or light industrial distribution boards and control panels.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2-pole miniature circuit breaker (2P)\u003c\/li\u003e\n\u003cli\u003eRated current: 50 A\u003c\/li\u003e\n\u003cli\u003eTripping characteristic: B (standard type for general load and lighting circuits)\u003c\/li\u003e\n\u003cli\u003eRated operational voltage: up to 400 V AC (multi-phase) \/ up to 440 V AC maximum\u003c\/li\u003e\n\u003cli\u003eShort-circuit breaking capacity: 10 kA (Icu rated) — suitable for typical distribution circuits\u003c\/li\u003e\n\u003cli\u003eEnergy-limiting class 3 — helps reduce fault energy and improve protection\u003c\/li\u003e\n\u003cli\u003eScrew-type terminals — compatible with solid or stranded conductors (range: 0.75 … 25 mm²)\u003c\/li\u003e\n\u003cli\u003eModular width: 2 units (≈ 36 mm) — fits standard DIN-rail enclosures and distribution boards\u003c\/li\u003e\n\u003cli\u003eCompact design — 90 mm height, 76 mm depth, 70 mm installation depth\u003c\/li\u003e\n\u003cli\u003eMounting: DIN-rail or busbar mounting; any mounting position allowed\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eTechnical Specifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eArticle Number:\u003c\/strong\u003e 5SL4250-6\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProduct Series:\u003c\/strong\u003e SENTRON 5SL4 miniature circuit breakers\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 2 (two-pole)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Current (In):\u003c\/strong\u003e 50 A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Operational Voltage (AC):\u003c\/strong\u003e 230\/400 V AC; up to 440 V AC max\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBreaking Capacity (Icu \/ Ics):\u003c\/strong\u003e 10 kA\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTripping Curve:\u003c\/strong\u003e B-characteristic\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConductor Size (solid \/ stranded):\u003c\/strong\u003e 0.75 … 25 mm²\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminal Tightening Torque:\u003c\/strong\u003e 2.5 … 3 N·m\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eWidth (modular units):\u003c\/strong\u003e 2 (≈ 36 mm)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions (approx.):\u003c\/strong\u003e Height 90 mm, Depth 76 mm, Installation depth 70 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection Rating:\u003c\/strong\u003e IP20 (with connected conductors)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmbient Operating Temperature:\u003c\/strong\u003e –25 °C … +55 °C typical (storage: –40 °C … +75 °C)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical Service Life:\u003c\/strong\u003e ~10,000 switching cycles typical\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eCompliance \u0026amp; Certifications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eComplies with standard electrical protection requirements for miniature circuit breakers (AC supply, overload \u0026amp; short-circuit protection)\u003c\/li\u003e\n\u003cli\u003eSuitable for use in residential, commercial, and light-industrial electrical installations\u003c\/li\u003e\n\u003cli\u003eCompatible with standard DIN-rail busbar systems and modular distribution enclosures\u003c\/li\u003e\n\u003cli\u003eAuxiliary and accessory devices (such as fault-signalling contacts or shunt trips) can be added according to scenario requirements\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Siemens 5SL4250-6 MCB is suitable for branch-circuit protection in distribution boards for lighting, socket outlets, small motor loads or general loads. It is also commonly used in control panels, machine distribution boards, small commercial installations, residential buildings, and any application requiring a reliable, compact 50 A over-current protection device with B-characteristic tripping behavior.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":40775053148224,"sku":"5SL4250-6","price":981.14,"currency_code":"ZAR","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/3662\/3424\/files\/5SL4250-6.jpg?v=1764575549","url":"https:\/\/industrial.rubicon.tech\/products\/siemens-miniature-circuit-breaker-b-curve-2-pole-400v-50a","provider":"Rubicon Group Industrial Technology Shop","version":"1.0","type":"link"}