{"product_id":"siemens-miniature-circuit-breaker-2-pole-25ka-400v-o70mm","title":"Siemens Miniature circuit breaker, 2-pole, 25kA, 400V, Ø70mm","description":"\u003ch3\u003e\u003cstrong\u003eProduct Overview\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThe Siemens 5SY8225-8 is a two-pole (2P) miniature circuit breaker from the SENTRON 5SY8 series. It is rated for 25 A, has a D-curve tripping characteristic, and is designed for industrial and infrastructure applications requiring high breaking capacity (25 kA at 400 V AC according to EN 60947-2). Its compact 70 mm depth housing, robust mechanical design and high fault-current resilience make it ideal for demanding switchboard and motor feeder protection systems.\u003c\/p\u003e\n\u003ch3\u003e\u003cstrong\u003eKey Features\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e2-pole (2P) miniature circuit breaker\u003c\/li\u003e\n\u003cli\u003eRated current: 25 A\u003c\/li\u003e\n\u003cli\u003eTripping characteristic: D-curve (suitable for loads with high inrush currents)\u003c\/li\u003e\n\u003cli\u003eRated operational voltage (AC): 400 V; insulation voltage: 440 V\u003c\/li\u003e\n\u003cli\u003eBreaking capacity: up to 30 kA (AC) according to IEC\/EN 60947-2\u003c\/li\u003e\n\u003cli\u003eCompact installation depth (~70 mm) for space-efficient switchgear design\u003c\/li\u003e\n\u003cli\u003eHalogen-free and sealable version for industrial safety requirements\u003c\/li\u003e\n\u003cli\u003eTouch protection for main terminals and combined top\/bottom terminals for flexible wiring\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 5SY8225-8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSeries:\u003c\/strong\u003e SENTRON 5SY8\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 2 (2P)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Current (AC-3, 40 °C):\u003c\/strong\u003e 25 A\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRated Supply Voltage (AC):\u003c\/strong\u003e 400 V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsulation Voltage (Ui):\u003c\/strong\u003e 440 V AC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBreaking Capacity (Icu):\u003c\/strong\u003e 25 kA at 400 V AC (25 kA typical); rating up to ~30 kA per catalogue data\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTripping Characteristic:\u003c\/strong\u003e D-curve\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule Width:\u003c\/strong\u003e Approx. 36 mm (2 modules wide on DIN rail)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHousing Depth:\u003c\/strong\u003e ~70 mm\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAmbient Operating Temperature:\u003c\/strong\u003e –25 °C to +55 °C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtection Class (Front):\u003c\/strong\u003e IP20 with terminals connected\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\u003eDesigned in accordance with IEC\/EN 60947-2 and related circuit-breaker standards\u003c\/li\u003e\n\u003cli\u003eTested for industrial switchgear applications, suitable for high fault-current environments\u003c\/li\u003e\n\u003cli\u003eHalogen-free and sealable options meet enhanced safety and environmental requirements\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\u003cstrong\u003eApplications\u003c\/strong\u003e\u003c\/h3\u003e\n\u003cp\u003eThis miniature circuit breaker is ideally suited for industrial and infrastructure electrical installations, where branch-circuit protection or motor-feeder protection is needed with high fault-current capacity and reliable performance. Thanks to its D-curve trip characteristic, it is particularly appropriate for circuits with high inrush currents—such as motors, transformers and large capacitive loads—while still offering compact form-factor advantages for panel installation.\u003c\/p\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":40775073562688,"sku":"5SY8225-8","price":1583.94,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/3662\/3424\/files\/5SY8225-8.jpg?v=1763723184","url":"https:\/\/industrial.rubicon.tech\/products\/siemens-miniature-circuit-breaker-2-pole-25ka-400v-o70mm","provider":"Rubicon Group Industrial Technology Shop","version":"1.0","type":"link"}