{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RP2540-2BW30","brand":"Siemens","brandSlug":"siemens","productSlug":"3RP2540-2BW30","canonicalUrl":"https://aoctrl.com/siemens/3RP2540-2BW30","factsUrl":"https://aoctrl.com/api/mcp/products/3RP2540-2BW30","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RP2540-2BW30 multifunction time delay relay, 12-240 V AC/DC, 0.05-600 s adjustable, 5 A thermal, DIN rail.","salesMarkdown":"## What this SIRIUS timer actually is The Siemens 3RP2540-2BW30 sits in the SIRIUS timer-relay family as a multifunction time-delay module with a relay output and non-volatile parameter retention, so the configured timing program survives a power dip without re-entry at the front dial. The function set explicitly excludes ON-delay, OFF-delay, star-delta, additive ON-delay, pulse-delayed and pulse-shaping modes — this is a multifunction device tuned for two delayed-switching outputs, not a basic on-delay timer. ## Timing performance and adjustment range Adjustable time spans 0.05-600 s on a single continuous scale, with a 250 ms recovery time and a 250 ms minimum ON period — short enough to recover cleanly in sequential start circuits without leaving the output flapping at the end of a time period. Basic insulation is the declared insulation class, and operating temperature spans -25 to +60 °C, with transport and storage rated -40 to +85 °C — so the unit survives cabinet-internal heat soak and outdoor shipping without derating the timing.","metaTitle":"Siemens 3RP2540-2BW30 SIRIUS Timer, 12-240 V, 0.05-600 s","metaDescription":"Siemens 3RP2540-2BW30 SIRIUS multifunction time delay relay, 12-240 V AC/DC supply, 0.05-600 s adjustable, 5 A thermal current.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Time Delay Relays"],"specifications":{"Depth":"90 mm","Solid":"20 ... 12","Width":"22.5 mm","at DC":"12 ... 240 V","title":"3RP2540-2BW30","Height":"100 mm","Upwards":"0 mm","at 24 V":"1 A","Forwards":"0 mm","ON-delay":"No","Stranded":"20 ... 12","at 125 V":"0.2 A","at 240 V":"0.5 ms","at 250 V":"0.1 A","at 50 Hz":"12 ... 240 V","at 60 Hz":"12 ... 240 V","Backwards":"0 mm","Downwards":"0 mm","OFF delay":"No","At The Side":"0 mm","description":"Timing relay, electronic OFF delay without control signal or smooth passing make contact non-volatile 7 time ranges 0.05...600 s 12-240 V AC/DC at 50/60 Hz AC, 2 change-over contacts with LED Spring-type terminal (push-in)","Non-Volatile":"Yes","Relay Output":"Yes","Initial Value":"0.85","Pulse Delayed":"No","Pulse-Shaping":"No","Recovery Time":"250 ms","During Storage":"-40 ... +85 °C","Adjustable Time":"0.05 ... 600 s","Thermal Current":"5 A","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","During Transport":"-40 ... +85 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail","Full-Scale Value":"1.1","Delayed Switching":"2","Mounting Position":"any","additive ON-delay":"No","minimum ON period":"250 ms","Product Brand Name":"SIRIUS","Star-Delta Circuit":"No","Type Of Insulation":"Basic insulation","Degree Of Pollution":"3","Product Designation":"timing relay","at AWG cables solid":"20 ... 12","protection class IP":"IP20","Adjustable Time Note":"minimum value at function N = 0.5 s","Passing Make Contact":"No","Design Of The Product":"rückfallverzögert ohne Steuersignal, nullspannungssicher, einschaltwischend","Instantaneous Contact":"0","Passing Break Contact":"No","Semi-Conductor Output":"No","Power Supply Influence":"1% in the whole voltage range to the set runtime","at AWG cables stranded":"20 ... 12","power loss [W] maximum":"2 W","OFF delay/instantaneous":"No","Relative Repeat Accuracy":"1 %; +/-","Pulse Delayed/Instantaneous":"No","Pulse-Shaping/Instantaneous":"No","Substance Prohibitance (Date)":"09/12/2014","Material Of Switching Contacts":"AgSnO2","ON-delay/instantaneous contact":"No","Test Voltage For Isolation Test":"2.5 kV","additive ON-delay/instantaneous":"No","ON-delay/OFF-delay/instantaneous":"No","Control Supply Voltage Frequency 1":"50 ... 60 Hz","Relative Humidity During Operation":"10 ... 95 %","Star-Delta Circuit With Delay Time":"No","Passing Break Contact/Instantaneous":"No","Surge Voltage Resistance Rated Value":"4 000 V","EMC immunity according to IEC 61812-1":"corresponds to degree of severity 3","Flashing Symmetrically With Pulse Start":"No","due to burst according to IEC 61000-4-4":"2 kV network connection / 1 kV control connection","reference code according to IEC 81346-2":"K","Finely Stranded With Core End Processing":"0.5 ... 2.5 mm²","Flashing Asymmetrically With Pulse Start":"No","Influence Of The Surrounding Temperature":"1% in the whole temperature range to the set runtime","Contact Reliability Of Auxiliary Contacts":"one incorrect switching operation of 100 million switching operations (17 V, 5 mA)","Product Extension Optional Remote Control":"No","Product Extension Required Remote Control":"No","Flashing Symmetrically With Interval Start":"No","Passing Make Contact/Instantaneous Contact":"No","Finely Stranded Without Core End Processing":"0.5 ... 4 mm²","Flashing Asymmetrically With Interval Start":"No","shock resistance according to IEC 60068-2-27":"11g / 15 ms","Retriggerable With Deactivated Control Signal":"No","Type Of Voltage Of The Control Supply Voltage":"AC/DC","Switching Capacity Current With Inductive Load":"0.01 ... 3 A","operating frequency with 3RT2 contactor maximum":"5 000 1/h","vibration resistance according to IEC 60068-2-6":"10 ... 55 Hz / 0.35 mm","Retrotriggerable With Switched-On Control Signal":"No","EMC emitted interference according to IEC 61812-1":"ambience A (industrial sector)","Mechanical Service Life (Operating Cycles) Typical":"10 000 000","electrostatic discharge according to IEC 61000-4-2":"4 kV contact discharge / 8 kV air discharge","At The Relay Outputs Switchover Delayed/Without Delay":"No","Flashing Symmetrically With Pulse Start/Instantaneous":"No","Relative Setting Accuracy Relating To Full-Scale Value":"5 %; +/-","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Flashing Symmetrically With Interval Start/Instantaneous":"No","Type Of Electrical Connection For Auxiliary And Control Circuit":"spring-loaded terminals (push-in)","Product Component Removable Terminal For Auxiliary And Control Circuit":"Yes","Retrotriggerable With Deactivated Control Signal/Instantaneous Contact":"No","Retrotriggerable With Switched-On Control Signal/Instantaneous Contact":"No","Design Of The Fuse Link For Short-Circuit Protection Of The Auxiliary Switch Required":"fuse gL/gG: 4 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$91.44 – $249.98","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/77b40fd26630b0d34cf71e3ec0ece12b.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=153918&mlfb=3RP2540-2BW30"},"ai":{"faq":[{"question":"What time range and switching capacity does the 3RP2540-2BW30 give?","answer":"Adjustable time runs 0.05-600 s on one continuous scale, with two delayed-switching outputs driven from a 5 A thermal-current relay contact; switching ratings step from 1 A at 24 V down to 0.1 A at 250 V — the typical DC derating curve where voltage dictates the inrush ceiling more than the contact itself."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RP2540-2BW30","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3RP2540-2BW30 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}