{"product_id":"siemens-sentron-5sd74-combination-surge-arresters-type-1-2","title":"Siemens SENTRON 5SD74 combination surge arresters type 1 + type 2","description":"\u003cp class=\"ps-intro\"\u003eSENTRON 5SD74 combination surge arresters type 1 + type 2 with remote signaling, combining lightning and surge protection in one device.\u003c\/p\u003e\u003ch4 class=\"ps-h\"\u003eKey features\u003c\/h4\u003e\u003cul class=\"ps-feat\"\u003e\n\u003cli\u003eCombined type 1 and type 2 protection in one device\u003c\/li\u003e\n\u003cli\u003eVersions for TN-C and TN-S\/TT systems\u003c\/li\u003e\n\u003cli\u003eCircuits 1+1, 3+0 and 3+1\u003c\/li\u003e\n\u003cli\u003eRemote signaling contact\u003c\/li\u003e\n\u003cli\u003eReplaceable spare part plugs for type 1 and type 2 paths\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch4 class=\"ps-h\"\u003eSpecifications\u003c\/h4\u003e\u003ctable class=\"ps-kv\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eSiemens SENTRON\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSeries\u003c\/th\u003e\n\u003ctd\u003e5SD74\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSPD type\u003c\/th\u003e\n\u003ctd\u003eType 1 + type 2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStandards\u003c\/th\u003e\n\u003ctd\u003eIEC\/EN 61643-11\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eDIN rail\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSource\u003c\/th\u003e\n\u003ctd\u003eSiemens Catalog LV 10 · 2026, p. 510-511\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003ctable class=\"ps-src\"\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e5SD7442-1\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eSystem: TN-S and TT | Protection paths: L-N, L-PE and N-PE | Un \/ Uc: 240 V AC \/ 350 V AC | Circuit: 1 + 1 | Remote signaling: Yes | Mounting width: 4 MW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5SD7443-1\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eSystem: TN-C | Protection paths: L-PEN | Un \/ Uc: 240\/415 V AC \/ 350 V AC | Circuit: 3 + 0 | Remote signaling: Yes | Mounting width: 6 MW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5SD7444-1\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eSystem: TN-S and TT | Protection paths: L-N, L-PE and N-PE | Un \/ Uc: 240 V AC \/ 350 V AC | Circuit: 3 + 1 | Remote signaling: Yes | Mounting width: 8 MW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5SD7448-1\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eSystem: Spare part plug | Protection paths: L-N and L-PEN (type 1) | Un \/ Uc: - | Circuit: For 5SD7442-1, 5SD7443-1, 5SD7444-1 | Remote signaling: - | Mounting width: -\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5SD7428-1\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eSystem: Spare part plug | Protection paths: L-N and L-PEN (type 2) | Un \/ Uc: - | Circuit: For 5SD7442\/43\/44-1, 5SD7422\/24 | Remote signaling: - | Mounting width: -\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":67535327068450,"sku":"5SD7442-1","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1021\/0744\/7586\/files\/siemens-sentron-5sd74-combination-surge-arresters-type-1-2.jpg?v=1792150078","url":"https:\/\/prosourcemro.com\/products\/siemens-sentron-5sd74-combination-surge-arresters-type-1-2","provider":"ProSource MRO","version":"1.0","type":"link"}