{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6ES7526-1BH00-0AB0","brand":"Siemens","brandSlug":"siemens","productSlug":"6ES7526-1BH00-0AB0","canonicalUrl":"https://aoctrl.com/siemens/6ES7526-1BH00-0AB0","factsUrl":"https://aoctrl.com/api/mcp/products/6ES7526-1BH00-0AB0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens S7-1500 series safety digital input module, 24 VDC P-reading, 4 outputs, SIL 3 rated, 35 mm width, 4.6 W typical power loss.","salesMarkdown":"## SIL 3 safety inputs for hazard zone guarding The Siemens 6ES7526-1BH00-0AB0 is a safety-rated digital input module for the S7-1500 platform, certified SIL 3 per IEC 61508. That means it can serve in safety functions up to the highest single-fault-tolerant integrity level — think emergency-stop circuits, light-curtain monitoring, or two-hand control on a press line, where a failure must not lead to loss of the safety function. It reads 24 VDC P-switching (source) inputs — the module sinks current from the sensor, which is the standard wiring for most safety-rated proximity switches and e-stop pushbuttons. The input thresholds are -30 to +5 V for signal 0, and +15 to +30 V for signal 1, so a nominal 24 V sensor signal is well within the guaranteed ON range. ## Output current and mounting derating The four outputs are rated 300 mA each, but that drops to 100 mA when the module is mounted vertically — the derating is due to natural convection cooling in a tall cabinet. If you are stacking modules in a vertical DIN-rail row, budget 100 mA per output channel and you will not hit the thermal limit. Typical power loss is 4.6 W, which is modest for a safety module with diagnostics. The module draws its 24 V from the backplane bus; no separate load supply needed for the electronics. ## Diagnostics and commissioning Diagnostics are comprehensive: a red ERROR LED for module faults, a green RUN LED for operational status, and per-channel green LEDs for signal state. The module supports I&M data (I&M0 to I&M3), diagnostic alarms, and firmware updates via the backplane — useful for tracking revision level across a fleet of machines. Input filter times are parameterizable from 0.4 ms to 20 ms for both rising and falling edges. For a fast safety input like a light curtain, set the minimum debounce; for a pushbutton, a longer filter avoids nuisance trips from contact bounce.","metaTitle":"Siemens 6ES7526-1BH00-0AB0 Safety DI Module, SIL 3, 24V","metaDescription":"Siemens 6ES7526-1BH00-0AB0 safety digital input module, SIL 3 per IEC 61508, 24 VDC P-reading inputs, 4 outputs, 4.6 W. Active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["PLC I/O & Expansion Modules"],"specifications":{"DI":"Yes","MSI":"No","24 V":"Yes; min. L+ (-1.5 V)","Depth":"129 mm","Width":"35 mm","Height":"147 mm","Inputs":"9 byte; S7-300/400F CPU, 8 byte","Outputs":"5 byte; S7-300/400F CPU, 4 byte","RUN LED":"Yes; green LED","I&M data":"Yes; I&M0 to I&M3","ERROR LED":"Yes; red LED","Wire-break":"No","Group error":"Yes","Short-circuit":"Yes","For Signal \"0\"":"-30 to +5 V","For Signal \"1\"":"+15 to +30 V","Shielded, Max.":"1 000 m","Parameterizable":"Yes","Weight, approx.":"280 g","lifecycle_stage":"current","Diagnostic alarm":"Yes","Power loss, typ.":"4.6 W","Rated value (DC)":"24 V","Unshielded, Max.":"500 m","Number of outputs":"4","Source/sink input":"Yes; P-reading","Automatic encoding":"Yes","FW update possible":"Yes","Hardware interrupt":"No","At \"0\" To \"1\", Max.":"20 ms","At \"0\" To \"1\", Min.":"0.4 ms","At \"1\" To \"0\", Max.":"20 ms","At \"1\" To \"0\", Min.":"0.4 ms","Diagnostics function":"Yes","For Signal \"1\", Typ.":"3.7 mA","Output current, max.":"300 mA; Max. 100 mA when mounted vertically","Isolation tested with":"707 V DC (type test)","SIL acc. to IEC 61508":"SIL 3","Channel status display":"Yes; green LED","For Module Diagnostics":"Yes; red LED","For Channel Diagnostics":"Yes; red LED","Number of digital inputs":"16","Short-circuit protection":"Yes","Current consumption, max.":"60 mA; without load","Reverse polarity protection":"Yes","Vertical Installation, Max.":"40 °C","Vertical Installation, Min.":"0 °C","Horizontal Installation, Max.":"60 °C","Horizontal Installation, Min.":"0 °C","Monitoring the supply voltage":"Yes","Suitable for safety functions":"Yes","Electronic coding element type F":"Yes","Current consumption (rated value)":"50 mA; without load","permissible range, lower limit (DC)":"19.2 V","permissible range, upper limit (DC)":"28.8 V","Between The Channels And Backplane Bus":"Yes","Power available from the backplane bus":"0.9 W","Performance level according to ISO 13849-1":"PLe","power supply according to NEC Class 2 required":"No","Low demand mode: PFDavg in accordance with SIL3":"< 5.00E-05","STEP 7 TIA Portal configurable/integrated from version":"V13 SP1 with HSP 0086","High demand/continuous mode: PFH in accordance with SIL3":"< 1.00E-09 1/h"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$467.36","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/06be19e6ae0402e7764a1ac8fecad741.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=572493&mlfb=6ES7526-1BH00-0AB0","alternativesUrl":"https://aoctrl.com/api/mcp/products/6ES7526-1BH00-0AB0/alternatives.json"},"ai":{"faq":[{"question":"Can 6ES7526-1BH00-0AB0 be used with a non-safety CPU?","answer":"The module is a safety-rated input module and requires a safety-capable CPU (S7-1500F or similar) to evaluate the safety functions. On a standard S7-1500 CPU it will power up and read inputs, but the safety logic will not execute."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6ES7526-1BH00-0AB0","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/6ES7526-1BH00-0AB0 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}}