{"product_id":"siemens-5sp4391-7-91a-3-pole-circuit-breaker","title":"Siemens 5SP4391-7 Miniature Circuit Breaker | 5SP4 Series | 91A 3-Pole | 415V Industrial MCB | Brand New Original","description":"\u003cdiv style=\"width: 100%; max-width: 850px; margin: 20px auto; font-family: 'Inter', system-ui, sans-serif; color: #333; line-height: 1.6; border: 3px solid #009999; border-radius: 12px; overflow: hidden; background: #ffffff; box-shadow: 0 4px 15px rgba(0,0,0,0.1);\"\u003e\n    \u003cdiv style=\"background: #009999; padding: 25px 30px; color: #ffffff;\"\u003e\n        \u003cdiv style=\"font-size: 11px; font-weight: 700; letter-spacing: 1px; text-transform: uppercase; margin-bottom: 5px; opacity: 0.9; color: #ffffff;\"\u003eYingZhou Industrial | Technical Specification\u003c\/div\u003e\n        \u003ch1 style=\"margin: 0; font-size: clamp(20px, 5vw, 26px); font-weight: 800; color: #ffffff;\"\u003eSiemens 5SP4391-7\u003c\/h1\u003e\n    \u003c\/div\u003e\n    \n    \u003ctable style=\"width: 100%; border-collapse: collapse; font-size: 14px; border: 1px solid #009999;\"\u003e\n        \u003ctr style=\"background: #e6f7f7;\"\u003e\n            \u003cth style=\"padding: 12px; border: 1px solid #009999; text-align: left;\"\u003eFeature\u003c\/th\u003e\n            \u003cth style=\"padding: 12px; border: 1px solid #009999; text-align: left;\"\u003eSpecification\u003c\/th\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd style=\"padding: 10px; border: 1px solid #009999; font-weight: 700;\"\u003eModel \/ Part Number\u003c\/td\u003e\n            \u003ctd style=\"padding: 10px; border: 1px solid #009999;\"\u003e5SP4391-7\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd style=\"padding: 10px; border: 1px solid #009999; font-weight: 700;\"\u003eSeries\u003c\/td\u003e\n            \u003ctd style=\"padding: 10px; border: 1px solid #009999;\"\u003e5SP4 Heavy-Duty Miniature Circuit Breaker (MCB) Series\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd style=\"padding: 10px; border: 1px solid #009999; font-weight: 700;\"\u003eRated Current\u003c\/td\u003e\n            \u003ctd style=\"padding: 10px; border: 1px solid #009999;\"\u003e91 A\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd style=\"padding: 10px; border: 1px solid #009999; font-weight: 700;\"\u003ePoles Description\u003c\/td\u003e\n            \u003ctd style=\"padding: 10px; border: 1px solid #009999;\"\u003e3-Pole (3P)\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd style=\"padding: 10px; border: 1px solid #009999; font-weight: 700;\"\u003eRated Voltage\u003c\/td\u003e\n            \u003ctd style=\"padding: 10px; border: 1px solid #009999;\"\u003e415V AC\u003c\/td\u003e\n        \u003c\/tr\u003e\n        \u003ctr\u003e\n            \u003ctd style=\"padding: 10px; border: 1px solid #009999; font-weight: 700;\"\u003eDevice Type\u003c\/td\u003e\n            \u003ctd style=\"padding: 10px; border: 1px solid #009999;\"\u003eMiniature Circuit Breaker (MCB) \/ Power Protection Switch\u003c\/td\u003e\n        \u003c\/tr\u003e\n    \u003c\/table\u003e\n\n    \u003cdiv style=\"padding: 30px;\"\u003e\n        \u003ch2 style=\"font-size: 18px; font-weight: 800; color: #009999; margin-top: 0;\"\u003ePerformance Overview\u003c\/h2\u003e\n        \u003cp style=\"font-size: 14px; color: #555; line-height: 1.8;\"\u003e\n            The Siemens 5SP4391-7 is a heavy-duty miniature circuit breaker from the robust 5SP4 series. Engineered for high-capacity industrial electrical distribution systems, this 91A, 3-pole circuit protection device delivers exceptional short-circuit interruption and reliable overload safeguarding for demanding commercial and heavy manufacturing power architectures.\n        \u003c\/p\u003e\n\n        \u003cdiv style=\"background: #e6f7f7; border: 2px solid #009999; border-radius: 12px; padding: 25px; border-left: 10px solid #009999; margin-top: 20px;\"\u003e\n            \u003ch3 style=\"margin-top: 0; font-size: 16px; color: #009999; font-weight: 800;\"\u003e🚀 Key Performance Benefits\u003c\/h3\u003e\n            \u003cul style=\"font-size: 14px; color: #555; padding-left: 20px; margin-bottom: 0;\"\u003e\n                \u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eHigh-Current Industrial Protection:\u003c\/strong\u003e Built to handle robust 91A electrical loads with superior thermal-magnetic trip accuracy.\u003c\/li\u003e\n                \u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003e3-Pole Power Interruption:\u003c\/strong\u003e Provides reliable, simultaneous multi-phase isolation for safe industrial panel operation.\u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eIndustrial Resilience:\u003c\/strong\u003e Manufactured to Siemens' strict global quality benchmarks for maximum electrical safety and long operating lifespans.\u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n\n        \u003cdiv style=\"background: #fdfdfd; border: 2px solid #eee; border-radius: 12px; padding: 25px; border-left: 10px solid #009999; margin-top: 20px;\"\u003e\n            \u003ch3 style=\"margin-top: 0; font-size: 16px; color: #333; font-weight: 800;\"\u003e⚙️ YingZhou Industrial Automation Integration\u003c\/h3\u003e\n            \u003cul style=\"font-size: 14px; color: #555; padding-left: 20px; margin-bottom: 0;\"\u003e\n                \u003cli style=\"margin-bottom: 8px;\"\u003e\n\u003cstrong\u003eBrand Series:\u003c\/strong\u003e \n                    \u003ca href=\"\/ja\/collections\/siemens\" style=\"color: #009999; text-decoration: underline; font-weight: 700;\"\u003eExplore Siemens Circuit Protection Hardware\u003c\/a\u003e\n                \u003c\/li\u003e\n                \u003cli\u003e\n\u003cstrong\u003eAutomation Solutions:\u003c\/strong\u003e \n                    \u003ca href=\"\/ja\/collections\/siemens\" style=\"color: #009999; text-decoration: underline; font-weight: 700;\"\u003eView YingZhou Industrial Automation Solutions\u003c\/a\u003e\n                \u003c\/li\u003e\n            \u003c\/ul\u003e\n        \u003c\/div\u003e\n    \u003c\/div\u003e\n\u003c\/div\u003e","brand":"YingZhou Automatization","offers":[{"title":"5SP4391-7","offer_id":58252750684463,"sku":"5SP4391-7","price":53.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0851\/9473\/5919\/files\/Siemens-5SP4391-7-Miniature-Circuit-Breaker-5SP4-Series-91A-3-Pole-415V-Industrial-MCB-Brand-New-Original.jpg?v=1784950005","url":"https:\/\/szyingzhou.com\/ja\/products\/siemens-5sp4391-7-91a-3-pole-circuit-breaker","provider":"YingZhou Automatization","version":"1.0","type":"link"}