{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6AG1326-1RF01-4AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6AG1326-1RF01-4AB0","canonicalUrl":"https://aoctrl.com/siemens/6AG1326-1RF01-4AB0","factsUrl":"https://aoctrl.com/api/mcp/products/6AG1326-1RF01-4AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIPLUS S7-300 SM 326F, fail-safe digital input module, 8 NAMUR inputs, 8 outputs, 24 V DC, SIL 3 (two-channel) / PLe, Ex(i) protection, 0 to 60 °C.","salesMarkdown":"## Fail-safe NAMUR input module for Ex zones The Siemens 6AG1326-1RF01-4AB0 is a SIPLUS SM 326F digital input module for the S7-300 system, purpose-built for fail-safe applications in potentially explosive atmospheres. It packs 8 NAMUR inputs and 8 fail-safe outputs into an 80 x 125 x 120 mm housing, drawing 4.5 W typical from the backplane. Rated SIL 2 in single-channel configuration and SIL 3 in two-channel, with a corresponding Performance Level of PLe per ISO 13849-1. That means it can serve as the safety I/O slice in a SIL 3-rated safety loop — think emergency stop chains, light curtain monitoring, or two-hand control circuits — without needing an external safety relay. ## Intrinsic safety and sensor wiring The module is certified for Ex(i) protection, meaning the input circuits are intrinsically safe. The open-circuit voltage Uo is capped at 10 V, short-circuit current Io at 13.9 mA, and the maximum permissible external capacitance Co is 3 µF with inductance Lo of 80 mH. These limits let you wire directly to NAMUR proximity sensors in Zone 1/Zone 2 gas groups without an isolating barrier. Each input draws 2.1 to 7 mA for a signal \"1\" and switches with a 1.2 to 3 ms delay in either direction. The 8.2 V DC output voltage powers the sensor loop; total available power Po is 33.1 mW, which comfortably drives a standard NAMUR sensor at 8.2 V. ## Cable length and isolation Unshielded sensor cables can run up to 100 m; shielded runs stretch to 200 m. Channel-to-channel isolation is provided, as is isolation between the channels and the backplane bus — no ground-loop coupling when mixing sensors on different field supplies. The module requires a 40-pin front connector (sold separately) and draws up to 90 mA from the 5 V DC backplane bus plus up to 160 mA from the load voltage L+. Reverse polarity protection is built in on the load voltage side.","metaTitle":"Siemens 6AG1326-1RF01-4AB0 SIPLUS SM 326F, SIL 3 / PLe","metaDescription":"SIPLUS S7-300 SM 326F DI 8xNAMUR module, 8 fail-safe inputs, SIL 3 (two-channel) / PLe, Ex(i) rated. Active production, sourced to order. Max 60 °C, 24 V DC.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["PLCs (Programmable Logic Controllers)"],"specifications":{"Max.":"60 °C; = Tmax","Min.":"0 °C; = Tmin","Depth":"120 mm","Width":"80 mm","title":"6AG1326-1RF01-4AB0","Height":"125 mm","CE mark":"Yes","description":"SIPLUS S7-300 SM 326F DI8 NAMUR based on 6ES7326-1RF01-0AB0 with conformal coating, 0…+60 °C, digital input SM 326, 8 DI; 24 V DC, NAMUR, fail-safe NAMUR input for SIMATIC S7 F-systems, up to category 4 (EN 954-1)/ SIL3 (IEC 61508)/PLE (ISO 13849), 1x 40-pole","Shielded, Max.":"200 m","acc. to EN 954":"Cat. 4","Weight, approx.":"482 g","lifecycle_stage":"current","Diagnostic alarm":"Yes; Parameterizable","Power loss, typ.":"4.5 W","Rated value (DC)":"24 V","Unshielded, Max.":"100 m","Number of outputs":"8","up to 40 °C, max.":"8","up to 60 °C, max.":"8","At \"0\" To \"1\", Max.":"1.2 to 3 ms","At \"1\" To \"0\", Max.":"1.2 to 3 ms","Fail-safe operation":"Yes","Between The Channels":"Yes","For Signal \"1\", Typ.":"2.1 to 7 mA","Group error SF (red)":"Yes","SIL acc. to IEC 61508":"SIL 2 (single-channel), SIL 3 (two-channel)","Type of input voltage":"DC","Type of output voltage":"8.2 V DC","Po (power output), max.":"33.1 mW","Number of digital inputs":"8","Required Front Connector":"1x 40-pin","Uo (no-load voltage), max.":"10 V","Module for Ex(i) protection":"Yes","Reverse polarity protection":"Yes","from backplane bus 5 V DC, max.":"90 mA","Io (short-circuit current), max.":"13.9 mA","Between The Channels And Backplane Bus":"Yes","Co (permissible external capacity), max.":"3 µF","from load voltage L+ (without load), max.":"160 mA","Performance level according to ISO 13849-1":"PLe","Installation altitude above sea level, max.":"2 000 m","Lo (permissible external inductivity), max.":"80 mH","Ambient air temperature-barometric pressure-altitude":"Tmin ... Tmax at 1 140 hPa ... 795 hPa (-1 000 m ... +2 000 m)","For Signal \"0\", Max. (Permissible Quiescent Current)":"0.35 to 1.2 mA","Between The Channels And The Power Supply Of The Electronics":"Yes","Um (voltage at non-intrinsically safe connecting terminals), max.":"60 V DC/30 V AC","Environmental conditions for process, measuring and control systems acc. to ANSI/ISA-71.04":"Yes; Level GX group A/B (excluding trichlorethylene; harmful gas concentrations up to the limits of EN 60721-3-3 class 3C4 permissible); level LC3 (salt spray) and level LB3 (oil)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/a8dc22bb0bb7d3b156c7f7d623b0df98.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=555868&mlfb=6AG1326-1RF01-4AB0"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6AG1326-1RF01-4AB0","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/6AG1326-1RF01-4AB0 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}}