{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1936-1ES00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1936-1ES00","canonicalUrl":"https://aoctrl.com/siemens/3RT1936-1ES00","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1936-1ES00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1936-1ES00 surge suppressor, diode assembly design, DC 30-250V, for contactor sizes S2 and S3, phased-out with successor 3RT2936-1ES00.","salesMarkdown":"## Part Overview and Sourcing Reality The Siemens 3RT1936-1ES00 is a SIRIUS surge suppressor with diode assemblies, designed for DC control supply voltages from 30 to 250 V. It mounts onto contactors of sizes S2 and S3 to suppress voltage spikes from the coil when de-energized, protecting downstream electronics and extending contactor life. ## What the DC Voltage Range Means for Fit The 30 to 250 V DC range covers the vast majority of industrial DC control voltages — 24 V nominal systems (which operate between roughly 20-30 V) are at the low end of the range, while 110 V and 220 V DC control buses are well within it. This is a single-range device, not auto-ranging; it must be selected for the specific control voltage present. The diode assembly design means polarity matters — verify the DC supply polarity matches the suppressor's orientation before installation. ## Integration Note for Panel Builders This suppressor is sized for SIRIUS contactors in frame sizes S2 and S3. It clips directly onto the contactor coil terminals — no separate DIN-rail mounting or additional wiring is needed beyond connecting the control wires. The diode assembly provides a defined current path during coil de-energization, which is critical for DC-operated contactors where the inductive kickback can otherwise damage PLC outputs or control relays.","metaTitle":"Siemens 3RT1936-1ES00 SIRIUS Surge Suppressor, DC 30-250V","metaDescription":"Siemens SIRIUS 3RT1936-1ES00 surge suppressor with diode assemblies for DC control circuits, 30-250V. Phased-out, replaced by 3RT2936-1ES00. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"at DC":"30 ... 250V","lifecycle_stage":"current","Product Brand Name":"SIRIUS","Product Designation":"surge suppressor","Design Of The Surge Suppressor":"with diode assemblies","Type Of Voltage Of The Control Supply Voltage":"DC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=38436&mlfb=3RT1936-1ES00","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RT1936-1ES00/alternatives.json"},"ai":{"faq":[{"question":"What replaces the 3RT1936-1ES00?","answer":"The official successor is the SIRIUS 3RT2936-1ES00. That is the direct drop-in replacement for new designs or BOM updates."},{"question":"What is the DC voltage range of this surge suppressor?","answer":"It is rated for DC control supply voltages from 30 to 250 V."},{"question":"Will the 3RT1936-1ES00 fit on a contactor that originally used a 3RT2026-1FB44-3MA0?","answer":"No. The 3RT1936-1ES00 is a surge suppressor for contactor frame sizes S2 and S3, while the 3RT2026-1FB44-3MA0 is a power contactor in frame size S0. The physical mounting interface and terminal layout differ between frame sizes."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1936-1ES00","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/3RT1936-1ES00 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}