{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"TM172E28R","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"TM172E28R","canonicalUrl":"https://aoctrl.com/schneider/TM172E28R","factsUrl":"https://aoctrl.com/api/mcp/products/TM172E28R","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Modicon M171/M172 additional I/O module, TM172E28R, 28 total I/O: 10 analog inputs, 2 analog outputs, 10 digital outputs (relay SPST 3 A), 6 digital inputs (24 V AC/DC), without display, CAN port, IP20.","salesMarkdown":"## 28 I/O Expansion for Modicon M172 The TM172E28R is a Modicon M171/M172 additional I/O module with 28 total inputs and outputs — 10 analog inputs configurable by pair, 2 programmable analog outputs, 10 relay outputs rated 3 A each, and 6 digital inputs at 24 V AC/DC. Designed for HVAC control, it supports NTC, PTC, Pt1000, 0-10 V, 0-5 V, and 4-20 mA sensor types. The 10 analog inputs are configurable by pair, so you can mix temperature probes and current loops on the same module. The relay outputs are SPST with 3 A rating — adequate for switching damper actuators or signal lights within a controller cabinet. Power draw is 24 VA at 24 V AC or 15 W at 24 V DC. Dimensions: 2.3 in deep by 2.8 in wide by 4.3 in tall. Mounts on DIN rail or panel with accessory. Operating temperature range -20 to +65 °C. ## Certifications Compliant with IEC 61000-4-4, EN 60068-2-27, CSA E60730-2-9, UL 60730-2-9, and others. Also meets EU Low Voltage and EMC directives.","metaTitle":"Schneider TM172E28R Expansion Module, 28 I/O, HVAC Control","metaDescription":"Active Modicon M171/M172 expansion module with 10 analog inputs, 2 analog outputs, 10 relay outputs. Quoted to order against RFQ. IEC/UL/CSA compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":[],"specifications":{"Depth":"2.3 in (59 mm)","Width":"2.8 in (72 mm)","Height":"4.3 in (110 mm)","Category":"US1PC1222537","Standards":"IEC 61000-4-4 EN 60068-2-27 CSA E60730-2-9 IEC 61000-4-11 CAN/CSA-E60730-1 UL 60730-2-9 EN 60730-2-9 EN 60730-1 IEC 61000-4-5 IEC 61000-4-3 EN 60068-2-6 Fc IEC 61000-4-2 UL94 (material V0)","Directives":"2014/35/EU - low voltage directive 2014/30/EU - electromagnetic compatibility","Display type":"Without Display","Number of port":"1 CAN port - screw terminal block","Realtime clock":"Without clock","Input impedance":"20 kOhm","lifecycle_stage":"current","Mounting Support":"DIN rail Panel mounting with accessory","Pollution degree":"2","Range of Product":"Modicon M171/M172","Relative humidity":"5...95 % non-condensing","Analogue input type":"NTC NK103 Beta 3977 temperature probe - 40...137 °C 0.1 °C 10 kOhm at 25 °C) NTC 103AT-2 Beta 3435 temperature probe - 50...110 °C 0.1 °C 10 kOhm at 25 °C) current 0...20 mA 1 digit < 150 Ohm current 4...20 mA 1 digit < 150 Ohm voltage 0...10 V 1 digit > 10 kOhm voltage 0...5 V 1 digit > 20 kOhm absolute or ratiometric) impedance 0...1500 hOhm 1 hOhm 10 kOhm impedance 0...300 daOhm 1 daOhm 2 kOhm direct input 1 digit Dry contact) PTC - 55...150 °C 0.1 °C 2 kOhm Pt 1000 temperature probe - 200...850 °C 0.1 °C 2 kOhm","Input/output number":"2 analog output 6 digital input 10 analog input 10 digital output","Sensor power supply":"5 V DC 50 mA 24 V DC 125 mA","Discrete input logic":"2 positive logic (sink) up to 2 kHz 4 positive logic (sink)","Measurement accuracy":"NTC NK103 - 40...+110 °C +/- 1 °C NTC NK103 110...137 °C +/- 1.9 °C NTC 103AT-2 - 50...110 °C +/- 1 °C PTC - 55...+135 °C +/- 1.1 °C PTC - 150...135 °C +/- 3.1 °C Pt 1000 - 200...-100 °C +/- 5 °C Pt 1000 - 100...-50 °C +/- 3 °C Pt 1000 - 50...+200 °C +/- 1.5 °C Pt 1000 200...600 °C +/- 15 °C Pt 1000 600...850 °C +/- 30 °C 0...20 mA 0...4 mA +/- 2 % of full scale +/- 1 digit 0...20 mA 4...20 mA +/- 1 % of full scale +/- 1 digit 4...20 mA +/- 1 % of full scale +/- 1 digit 0...10 V +/- 1 % of full scale +/- 1 digit 0...5 V +/- 1 % of full scale +/- 1 digit HOhm 0...700 hOhm +/- 10 hOhm HOhm 700 hOhm...1200 hOhm +/- 25 hOhm HOhm 1200 hOhm...1500 hOhm +/- 60 hOhm DaOhm 0...300 daOhm +/- 2.5 daOhm","Overvoltage category":"II","Total inputs/outputs":"28","Analogue input number":"10 configurable by pair","Discrete input number":"2 4","Nbr. of units in pkg.":"1","Analogue output number":"2 programmable","Discrete input current":"2.5 mA AC/DC","Discrete input voltage":"24 V AC/DC","Discrete output number":"3 relay outputs SPST with same common 2 relay outputs SPST with same common","Power consumption in W":"24 VA 24 V AC 15 W 24 V DC","Discrete output current":"3 A relay SPST","IP degree of protection":"IP20","Product or Component Type":"Additional I/O module","[Us] rated supply voltage":"24 V +/- 10 % AC 20...38 V DC","Product Specific Application":"HVAC control","Ambient Air Temperature for Storage":"-22...158 °F (-30...70 °C)","Ambient air temperature for operation":"-4...149 °F (-20...65 °C) UL 60730-1"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$204.47 – $264.00","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/1ce123ccdff75272c17b3b885d000f85.pdf","sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/TM172E28R/alternatives.json"},"ai":{"faq":[{"question":"What compliance certifications does TM172E28R hold?","answer":"It complies with IEC 61000-4-4, EN 60068-2-27, CSA E60730-2-9, UL 60730-2-9, and others, plus EU Low Voltage and EMC directives."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/TM172E28R","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/schneider/TM172E28R when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:21:01.794Z","lastPublished":"2026-09-02T08:21:01.794Z","indexable":true}}