{"product_id":"siemens-sirius-3rs2-temperature-monitoring-relays","title":"Siemens SIRIUS 3RS2 Temperature Monitoring Relays (3RS25\/26\/28\/29)","description":"\u003cp class=\"ps-intro\"\u003eSIRIUS 3RS2 temperature monitoring relays measure temperatures in solid, liquid and gas media with resistance sensors or thermocouples.\u003c\/p\u003e\u003ch4 class=\"ps-h\"\u003eKey features\u003c\/h4\u003e\u003cul class=\"ps-feat\"\u003e\n\u003cli\u003e3RS2500 analog multi-function device with Pt100 and thermocouple type J\/K\u003c\/li\u003e\n\u003cli\u003e3RS2600 digital device with 2 threshold values and many sensor types\u003c\/li\u003e\n\u003cli\u003e3RS2800 digital device for IO-Link\u003c\/li\u003e\n\u003cli\u003e3RS2900 sensor expansion module adds 2 sensors and a 4-20 mA input for 3RS26\/3RS28\u003c\/li\u003e\n\u003cli\u003eWidth 22.5 mm, screw or spring-loaded (push-in) terminals\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\u003eSIRIUS 3RS2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eFunction\u003c\/th\u003e\n\u003ctd\u003eTemperature monitoring\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWidth\u003c\/th\u003e\n\u003ctd\u003e22.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eDIN rail, stand-alone\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eSource\u003c\/th\u003e\n\u003ctd\u003eSiemens Catalog IC 10 · 2026, p. 1014\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\u003e3RS2500-1AA30\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Analog, 1 sensor, 1 threshold | Sensors: Pt100, TC J\/K | Supply: 24 V AC\/DC | Connection: Screw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3RS2500-2AA30\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Analog, 1 sensor, 1 threshold | Sensors: Pt100, TC J\/K | Supply: 24 V AC\/DC | Connection: Spring-loaded (push-in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3RS2500-1AW30\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Analog, 1 sensor, 1 threshold | Sensors: Pt100, TC J\/K | Supply: 24 ... 240 V AC\/DC | Connection: Screw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3RS2500-2AW30\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Analog, 1 sensor, 1 threshold | Sensors: Pt100, TC J\/K | Supply: 24 ... 240 V AC\/DC | Connection: Spring-loaded (push-in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3RS2600-1BA30\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Digital, 1 sensor, 2 thresholds | Sensors: Pt100\/1000, KTY, NTC, TC | Supply: 24 V AC\/DC | Connection: Screw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3RS2600-2BA30\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Digital, 1 sensor, 2 thresholds | Sensors: Pt100\/1000, KTY, NTC, TC | Supply: 24 V AC\/DC | Connection: Spring-loaded (push-in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3RS2600-1BW30\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Digital, 1 sensor, 2 thresholds | Sensors: Pt100\/1000, KTY, NTC, TC | Supply: 24 ... 240 V AC\/DC | Connection: Screw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3RS2600-2BW30\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Digital, 1 sensor, 2 thresholds | Sensors: Pt100\/1000, KTY, NTC, TC | Supply: 24 ... 240 V AC\/DC | Connection: Spring-loaded (push-in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3RS2800-1BA40\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: IO-Link, 1 sensor, 2 thresholds | Sensors: Pt100\/1000, KTY, NTC, TC | Supply: 24 V DC | Connection: Screw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3RS2800-2BA40\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: IO-Link, 1 sensor, 2 thresholds | Sensors: Pt100\/1000, KTY, NTC, TC | Supply: 24 V DC | Connection: Spring-loaded (push-in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3RS2900-1AA30\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Sensor expansion, +2 sensors, 4-20 mA | Sensors: Pt100\/1000, KTY83\/84, NTC | Supply: 24 V AC\/DC | Connection: Screw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3RS2900-2AA30\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Sensor expansion, +2 sensors, 4-20 mA | Sensors: Pt100\/1000, KTY83\/84, NTC | Supply: 24 V AC\/DC | Connection: Spring-loaded (push-in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3RS2900-1AW30\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Sensor expansion, +2 sensors, 4-20 mA | Sensors: Pt100\/1000, KTY83\/84, NTC | Supply: 24 ... 240 V AC\/DC | Connection: Screw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e3RS2900-2AW30\u003c\/td\u003e\n\u003ctd\u003e\u003c\/td\u003e\n\u003ctd\u003eType: Sensor expansion, +2 sensors, 4-20 mA | Sensors: Pt100\/1000, KTY83\/84, NTC | Supply: 24 ... 240 V AC\/DC | Connection: Spring-loaded (push-in)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":67535296102690,"sku":"3RS2500-1AA30","price":0.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1021\/0744\/7586\/files\/siemens-sirius-3rs2-temperature-monitoring-relays.jpg?v=1792150147","url":"https:\/\/prosourcemro.com\/products\/siemens-sirius-3rs2-temperature-monitoring-relays","provider":"ProSource MRO","version":"1.0","type":"link"}