{"product_id":"siemens-sentron-5st3-auxiliary-switches-fault-signal-contacts","title":"Siemens SENTRON 5ST3 Auxiliary Switches \u0026 Fault Signal Contacts","description":"\u003cp class=\"ps-intro\"\u003eSENTRON 5ST3 auxiliary switches (AS), fault signal contacts (FC) and combined AS+FC modules for side mounting on miniature circuit breakers, RCCBs, RCBOs and AFDDs.\u003c\/p\u003e\u003ch4 class=\"ps-h\"\u003eKey features\u003c\/h4\u003e\u003cul class=\"ps-feat\"\u003e\n\u003cli\u003eAuxiliary switches signal the contact position of the mounted device\u003c\/li\u003e\n\u003cli\u003eFault signal contacts signal automatic tripping (overload, short circuit, fault current)\u003c\/li\u003e\n\u003cli\u003eLow power versions for PLC inputs acc. to EN 61131-2\u003c\/li\u003e\n\u003cli\u003eVersions with TEST button (AS) or TEST and RESET buttons (FC)\u003c\/li\u003e\n\u003cli\u003eUL 489 versions (-0HG) for 5SJ4...-.HG MCBs\u003c\/li\u003e\n\u003cli\u003e5ST3 COM AS+FC with temperature, operating cycle and trip counters via radio to Powercenter 1000\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\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProduct line\u003c\/th\u003e\n\u003ctd\u003eSENTRON\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eSide-mounted on basic unit\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eConductor cross-section\u003c\/th\u003e\n\u003ctd\u003e0.5 ... 2.5 mm2 (AWG 22 ... 14)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMax. tightening torque\u003c\/th\u003e\n\u003ctd\u003e0.5 Nm (4.5 lb-in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eStandards\u003c\/th\u003e\n\u003ctd\u003eIEC\/EN 62019, IEC\/EN 60947-5-1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eNote\u003c\/th\u003e\n\u003ctd\u003e5ST3805-1 handle coupler required for 5SU1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSource\u003c\/th\u003e\n\u003ctd\u003eSiemens Catalog LV 10 · 2026, p. 322-326\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\u003e5ST3010\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Auxiliary switch (AS) | Contacts: 1 NO + 1 NC | Version: Standard | Width: 0.5 MW | For: 5SL, 5SY, 5SP4, 5SP5, 5SY17, 5SV, 5SU1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5ST3013\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Auxiliary switch (AS) | Contacts: 1 NO + 1 NC | Version: For low power | Width: 0.5 MW | For: 5SL, 5SY, 5SP4, 5SP5, 5SY17, 5SV, 5SU1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5ST3013-0XX01\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Auxiliary switch (AS) | Contacts: 1 NO + 1 NC | Version: For low power (with diode) | Width: 0.5 MW | For: 5SL, 5SY, 5SP4, 5SP5, 5SY17, 5SV, 5SU1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5ST3011\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Auxiliary switch (AS) | Contacts: 2 NO | Version: Standard | Width: 0.5 MW | For: 5SL, 5SY, 5SP4, 5SP5, 5SY17, 5SV, 5SU1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5ST3014\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Auxiliary switch (AS) | Contacts: 2 NO | Version: For low power | Width: 0.5 MW | For: 5SL, 5SY, 5SP4, 5SP5, 5SY17, 5SV, 5SU1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5ST3012\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Auxiliary switch (AS) | Contacts: 2 NC | Version: Standard | Width: 0.5 MW | For: 5SL, 5SY, 5SP4, 5SP5, 5SY17, 5SV, 5SU1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5ST3015\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Auxiliary switch (AS) | Contacts: 2 NC | Version: For low power | Width: 0.5 MW | For: 5SL, 5SY, 5SP4, 5SP5, 5SY17, 5SV, 5SU1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5ST3016\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Auxiliary switch (AS) | Contacts: 1 CO | Version: Standard | Width: 0.5 MW | For: 5SL, 5SY, 5SP4, 5SP5, 5SY17, 5SV, 5SU1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5ST1010-0FP\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Auxiliary switch (AS) | Contacts: 1 CO | Version: Other device ranges (p. 3\/50-3\/51)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5ST3010-2\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Auxiliary switch (AS) | Contacts: 1 NO + 1 NC | Version: Standard, with TEST button | Width: 0.5 MW | For: 5SL, 5SY, 5SP4, 5SP5, 5SY17, 5SV, 5SU1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5ST3013-2\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Auxiliary switch (AS) | Contacts: 1 NO + 1 NC | Version: Low power, with TEST button | Width: 0.5 MW | For: 5SL, 5SY, 5SP4, 5SP5, 5SY17, 5SV, 5SU1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5ST3011-2\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Auxiliary switch (AS) | Contacts: 2 NO | Version: Standard, with TEST button | Width: 0.5 MW | For: 5SL, 5SY, 5SP4, 5SP5, 5SY17, 5SV, 5SU1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5ST3014-2\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Auxiliary switch (AS) | Contacts: 2 NO | Version: Low power, with TEST button | Width: 0.5 MW | For: 5SL, 5SY, 5SP4, 5SP5, 5SY17, 5SV, 5SU1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5ST3012-2\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Auxiliary switch (AS) | Contacts: 2 NC | Version: Standard, with TEST button | Width: 0.5 MW | For: 5SL, 5SY, 5SP4, 5SP5, 5SY17, 5SV, 5SU1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5ST3015-2\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Auxiliary switch (AS) | Contacts: 2 NC | Version: Low power, with TEST button | Width: 0.5 MW | For: 5SL, 5SY, 5SP4, 5SP5, 5SY17, 5SV, 5SU1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5ST3010-0HG\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Auxiliary switch (AS) | Contacts: 1 NO + 1 NC | Version: Acc. to UL 489 | Width: 0.5 MW | For: 5SJ4...-.HG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5ST3011-0HG\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Auxiliary switch (AS) | Contacts: 2 NO | Version: Acc. to UL 489 | Width: 0.5 MW | For: 5SJ4...-.HG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5ST3012-0HG\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Auxiliary switch (AS) | Contacts: 2 NC | Version: Acc. to UL 489 | Width: 0.5 MW | For: 5SJ4...-.HG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5ST3020\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Fault signal contact (FC) | Contacts: 1 NO + 1 NC | Version: Standard | Width: 0.5 MW | For: 5SL, 5SY, 5SP4, 5SP5, 5SY17, 5SV, 5SU1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5ST3021\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Fault signal contact (FC) | Contacts: 2 NO | Version: Standard | Width: 0.5 MW | For: 5SL, 5SY, 5SP4, 5SP5, 5SY17, 5SV, 5SU1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5ST3022\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Fault signal contact (FC) | Contacts: 2 NC | Version: Standard | Width: 0.5 MW | For: 5SL, 5SY, 5SP4, 5SP5, 5SY17, 5SV, 5SU1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5ST3020-2\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Fault signal contact (FC) | Contacts: 1 NO + 1 NC | Version: With TEST and RESET button | Width: 0.5 MW | For: 5SL, 5SY, 5SP4, 5SP5, 5SY17, 5SV, 5SU1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5ST3021-2\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Fault signal contact (FC) | Contacts: 2 NO | Version: With TEST and RESET button | Width: 0.5 MW | For: 5SL, 5SY, 5SP4, 5SP5, 5SY17, 5SV, 5SU1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5ST3022-2\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Fault signal contact (FC) | Contacts: 2 NC | Version: With TEST and RESET button | Width: 0.5 MW | For: 5SL, 5SY, 5SP4, 5SP5, 5SY17, 5SV, 5SU1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5ST3020-0HG\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Fault signal contact (FC) | Contacts: 1 NO + 1 NC | Version: Acc. to UL 489 | Width: 0.5 MW | For: 5SJ4...-.HG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5ST3021-0HG\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Fault signal contact (FC) | Contacts: 2 NO | Version: Acc. to UL 489 | Width: 0.5 MW | For: 5SJ4...-.HG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5ST3022-0HG\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Fault signal contact (FC) | Contacts: 2 NC | Version: Acc. to UL 489 | Width: 0.5 MW | For: 5SJ4...-.HG\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5ST3062\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: AS + FC | Contacts: 1 CO (AS) + 1 CO (FC) | Version: Standard | Width: 0.5 MW | For: 5SL, 5SY, 5SP4, 5SP5, 5SY17, 5SV, 5SU1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e5ST3062-0MC\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: 5ST3 COM AS + FC | Contacts: 1 CO (AS) + 1 CO (FC) | Version: Measuring\/communication, radio | Width: 0.5 MW | For: 5SL, 5SY, 5SP4, 5SP5, 5SY17, 5SV, 5SU1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":67535321170210,"sku":"5ST3010","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1021\/0744\/7586\/files\/siemens-sentron-5st3-auxiliary-switches-fault-signal-contacts.jpg?v=1792150078","url":"https:\/\/prosourcemro.com\/products\/siemens-sentron-5st3-auxiliary-switches-fault-signal-contacts","provider":"ProSource MRO","version":"1.0","type":"link"}