• Siemens SIRIUS 3RS2 Temperature Monitoring Relays (3RS25/26/28/29)
1 1

Siemens SIRIUS 3RS2 Temperature Monitoring Relays (3RS25/26/28/29)

Siemens SIRIUS 3RS2 Temperature Monitoring Relays (3RS25/26/28/29)

SIRIUS 3RS2 temperature monitoring relays measure temperatures in solid, liquid and gas media with resistance sensors or thermocouples.

Key features

  • 3RS2500 analog multi-function device with Pt100 and thermocouple type J/K
  • 3RS2600 digital device with 2 threshold values and many sensor types
  • 3RS2800 digital device for IO-Link
  • 3RS2900 sensor expansion module adds 2 sensors and a 4-20 mA input for 3RS26/3RS28
  • Width 22.5 mm, screw or spring-loaded (push-in) terminals

Specifications

Brand Siemens
Product line SIRIUS 3RS2
Function Temperature monitoring
Width 22.5 mm
Mounting DIN rail, stand-alone
Source Siemens Catalog IC 10 · 2026, p. 1014
3RS2500-1AA30 Type: Analog, 1 sensor, 1 threshold | Sensors: Pt100, TC J/K | Supply: 24 V AC/DC | Connection: Screw
3RS2500-2AA30 Type: Analog, 1 sensor, 1 threshold | Sensors: Pt100, TC J/K | Supply: 24 V AC/DC | Connection: Spring-loaded (push-in)
3RS2500-1AW30 Type: Analog, 1 sensor, 1 threshold | Sensors: Pt100, TC J/K | Supply: 24 ... 240 V AC/DC | Connection: Screw
3RS2500-2AW30 Type: Analog, 1 sensor, 1 threshold | Sensors: Pt100, TC J/K | Supply: 24 ... 240 V AC/DC | Connection: Spring-loaded (push-in)
3RS2600-1BA30 Type: Digital, 1 sensor, 2 thresholds | Sensors: Pt100/1000, KTY, NTC, TC | Supply: 24 V AC/DC | Connection: Screw
3RS2600-2BA30 Type: Digital, 1 sensor, 2 thresholds | Sensors: Pt100/1000, KTY, NTC, TC | Supply: 24 V AC/DC | Connection: Spring-loaded (push-in)
3RS2600-1BW30 Type: Digital, 1 sensor, 2 thresholds | Sensors: Pt100/1000, KTY, NTC, TC | Supply: 24 ... 240 V AC/DC | Connection: Screw
3RS2600-2BW30 Type: Digital, 1 sensor, 2 thresholds | Sensors: Pt100/1000, KTY, NTC, TC | Supply: 24 ... 240 V AC/DC | Connection: Spring-loaded (push-in)
3RS2800-1BA40 Type: IO-Link, 1 sensor, 2 thresholds | Sensors: Pt100/1000, KTY, NTC, TC | Supply: 24 V DC | Connection: Screw
3RS2800-2BA40 Type: IO-Link, 1 sensor, 2 thresholds | Sensors: Pt100/1000, KTY, NTC, TC | Supply: 24 V DC | Connection: Spring-loaded (push-in)
3RS2900-1AA30 Type: Sensor expansion, +2 sensors, 4-20 mA | Sensors: Pt100/1000, KTY83/84, NTC | Supply: 24 V AC/DC | Connection: Screw
3RS2900-2AA30 Type: Sensor expansion, +2 sensors, 4-20 mA | Sensors: Pt100/1000, KTY83/84, NTC | Supply: 24 V AC/DC | Connection: Spring-loaded (push-in)
3RS2900-1AW30 Type: Sensor expansion, +2 sensors, 4-20 mA | Sensors: Pt100/1000, KTY83/84, NTC | Supply: 24 ... 240 V AC/DC | Connection: Screw
3RS2900-2AW30 Type: Sensor expansion, +2 sensors, 4-20 mA | Sensors: Pt100/1000, KTY83/84, NTC | Supply: 24 ... 240 V AC/DC | Connection: Spring-loaded (push-in)
Monitoring RelaysSiemens
14 product codes available in this family
Sourced direct from KoreaExport-ready supplyCompetitive pricing
RFQ List 0 Email about this

Need a different model, or a part not listed here? Send us your parts list →

Siemens SIRIUS 3RS2 Temperature Monitoring Relays (3RS25/26/28/29)

Brand Siemens·Monitoring Relays

Available part numbers (14)

3RS2500-1AA30, 3RS2500-2AA30, 3RS2500-1AW30, 3RS2500-2AW30, 3RS2600-1BA30, 3RS2600-2BA30, 3RS2600-1BW30, 3RS2600-2BW30, 3RS2800-1BA40, 3RS2800-2BA40 + 4 more — see full table ↓

How to order

Send the Siemens part numbers and quantities through our RFQ form or to info@prosourcemro.com. We confirm price, availability and lead time within 1 business day — no account needed.

RFQ List 0 →
View full details
Product codes & specifications
0 selected
RFQ List (0)
Product codeSpec
3RS2500-1AA30Type: Analog, 1 sensor, 1 threshold | Sensors: Pt100, TC J/K | Supply: 24 V AC/DC | Connection: Screw
3RS2500-2AA30Type: Analog, 1 sensor, 1 threshold | Sensors: Pt100, TC J/K | Supply: 24 V AC/DC | Connection: Spring-loaded (push-in)
3RS2500-1AW30Type: Analog, 1 sensor, 1 threshold | Sensors: Pt100, TC J/K | Supply: 24 ... 240 V AC/DC | Connection: Screw
3RS2500-2AW30Type: Analog, 1 sensor, 1 threshold | Sensors: Pt100, TC J/K | Supply: 24 ... 240 V AC/DC | Connection: Spring-loaded (push-in)
3RS2600-1BA30Type: Digital, 1 sensor, 2 thresholds | Sensors: Pt100/1000, KTY, NTC, TC | Supply: 24 V AC/DC | Connection: Screw
3RS2600-2BA30Type: Digital, 1 sensor, 2 thresholds | Sensors: Pt100/1000, KTY, NTC, TC | Supply: 24 V AC/DC | Connection: Spring-loaded (push-in)
3RS2600-1BW30Type: Digital, 1 sensor, 2 thresholds | Sensors: Pt100/1000, KTY, NTC, TC | Supply: 24 ... 240 V AC/DC | Connection: Screw
3RS2600-2BW30Type: Digital, 1 sensor, 2 thresholds | Sensors: Pt100/1000, KTY, NTC, TC | Supply: 24 ... 240 V AC/DC | Connection: Spring-loaded (push-in)
3RS2800-1BA40Type: IO-Link, 1 sensor, 2 thresholds | Sensors: Pt100/1000, KTY, NTC, TC | Supply: 24 V DC | Connection: Screw
3RS2800-2BA40Type: IO-Link, 1 sensor, 2 thresholds | Sensors: Pt100/1000, KTY, NTC, TC | Supply: 24 V DC | Connection: Spring-loaded (push-in)
3RS2900-1AA30Type: Sensor expansion, +2 sensors, 4-20 mA | Sensors: Pt100/1000, KTY83/84, NTC | Supply: 24 V AC/DC | Connection: Screw
3RS2900-2AA30Type: Sensor expansion, +2 sensors, 4-20 mA | Sensors: Pt100/1000, KTY83/84, NTC | Supply: 24 V AC/DC | Connection: Spring-loaded (push-in)
3RS2900-1AW30Type: Sensor expansion, +2 sensors, 4-20 mA | Sensors: Pt100/1000, KTY83/84, NTC | Supply: 24 ... 240 V AC/DC | Connection: Screw
3RS2900-2AW30Type: Sensor expansion, +2 sensors, 4-20 mA | Sensors: Pt100/1000, KTY83/84, NTC | Supply: 24 ... 240 V AC/DC | Connection: Spring-loaded (push-in)

Need a different model, or a part not listed here? Send us your parts list →

Related products

All Relays & Switches →