{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"6EP1931-2DC42","brand":"Siemens","brandSlug":"siemens","productSlug":"6EP1931-2DC42","canonicalUrl":"https://aoctrl.com/siemens/6EP1931-2DC42","factsUrl":"https://aoctrl.com/api/mcp/products/6EP1931-2DC42","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SITOP DC UPS module, 24 V DC, 6 A rated current, 144 W, with battery management and signalling contacts.","salesMarkdown":"The 6EP1931-2DC42: This module carries cULus-Listing to UL 508 and CSA C22.2 No. 107.1 (File E197259), CE marking, and EAC approval. It also holds shipbuilding approvals from ABS and DNV GL, making it suitable for marine and offshore applications where class-certified equipment is required. EMC compliance covers both emitted interference (EN 55022 Class B) and immunity (EN 61000-6-2). The enclosure is 50 mm wide, 125 mm high, and 125 mm deep — a compact footprint that snaps onto DIN rail EN 60715 (35×7.5/15). Input side uses two screw terminals accepting 1 to 4 mm² (17 to 11 AWG); output side provides four screw terminals of the same size for load distribution. ## Battery Management and Signalling Designed for external battery modules (lead-acid type), the module manages charging with a charging current of 0.2 A or 0.4 A. It provides comprehensive status indication via LEDs and floating contacts: green LED for normal operation, yellow for buffered mode, red for alarm conditions (low battery or replacement needed), and a separate NO contact for energy storage above 85%. The floating changeover contacts are rated for DC 60 V/1 A or AC 30 V/1 A. Startup delay is typically 1 second. ## Environmental and Reliability MTBF at 40 °C is rated at 904,159 hours, indicating high reliability for continuous-duty applications.","metaTitle":"Siemens 6EP1931-2DC42 DC UPS Module, 24V 6A, 144W","metaDescription":"Siemens SITOP DC UPS module 6EP1931-2DC42, 24V DC input, 6A rated current, 144W. Active production. cULus Listed, DNV GL approved. DIN rail mount. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["DIN Rail Power Supplies"],"specifications":{"Top":"50 mm","Left":"0 mm","Right":"0 mm","Bottom":"50 mm","C-Tick":"No","DNV GL":"Yes","At Input":"24 V DC: 2 screw terminals for 1 ... 4 mm²/17 ... 11 AWG","At Output":"24 V DC: 4 screw terminals for 1 ... 4 mm²/17 ... 11 AWG","CE marking":"Yes","Rated Value":"6 A","UL approval":"Yes","EAC approval":"Yes","Peak Current":"6.3 A","During Storage":"-40 ... +85 °C","MTBF at 40 °C":"904 159 h","lifecycle_stage":"current","Charging Current":"0.2 A, 0.4 A","During Operation":"-25 ... +60 °C; with natural convection","During Transport":"-40 ... +85 °C","Fastening Method":"Snaps onto DIN rail EN 60715 35x7.5/15","In Buffering Mode":"Buffered mode: LED yellow (Bat), floating changeover contact \"OK/Bat\" to setting \"Bat\"; Prewarning battery voltage < 20.4 VDC: LED red (alarm), floating changeover contact \"Alarm/Bat\" to setting \"Alarm\"; Energy storage > 85%: LED green (Bat > 85%), floating NO contact \"Bat > 85\" closed","Other Information":"Specifications at rated input voltage and ambient temperature +25 °C (unless otherwise specified)","In Normal Operation":"0 ... 6 A","Input Voltage Range":"22 ... 29 V DC","as approval for USA":"cULus-Listed (UL 508, CSA C22.2 No. 107.1), File E197259","protection class IP":"IP20","For Normal Operation":"Normal operation: LED green (OK), floating changeover contact \"Bat/OK\" to setting \"OK\" (\"OK\" means: Voltage of the supplying power supply unit is greater than cut-in threshold set at the DC UPS module); Lack of buffer standby: LED red (alarm), floating changeover contact \"Alarm/Bat\" to setting \"Alarm\"; Battery replacement required: LED red (alarm) flashing with approx. 0.25 Hz, floating changeover contact \"Alarm/Bat\" switching with approx. 0.25 Hz; Energy storage > 85%: LED green (Bat > 85%), floating NO contact \"Bat > 85\" closed; Permissible contact current capacity: DC 60 V/1 A or AC 30 V /1 A","Shipbuilding Approval":"ABS, DNV GL","Depth Of The Enclosure":"125 mm","Electrical Accessories":"Battery module","Type Of Energy Storage":"with batteries","Voltage Curve At Input":"DC","Width Of The Enclosure":"50 mm","Design Of The Interface":"USB","Height Of The Enclosure":"125 mm","For Emitted Interference":"EN 55022 Class B","For Interference Immunity":"EN 61000-6-2","Formula For Output Voltage":"Vin - approx. 0.5 V","Startup Delay Time Typical":"1 s","Supplied Active Power Typical":"144 W","Type Of Electrical Connection":"screw-type terminals","product component PC interface":"Yes","For Rechargeable Battery Module":"24 V DC: 2 screw terminals for 1 ... 4 mm²/17 ... 11 AWG","supply voltage at DC rated value":"24 V","Operating Resource Protection Class":"Class III","in buffering mode at DC rated value":"24 V","in normal operation at DC rated value":"24 V","For Control Circuit And Status Message":"10 screw terminals for 0.5 ... 2.5 mm²/20 ... 13 AWG","output voltage in buffering mode at DC":"19 ... 28.5 V","reference code according to IEC 81346-2":"RB","Adjustable Charging Current Maximum Note":"factory setting approx. 0.4 A","Property Of The Output Short-Circuit Proof":"Yes","Galvanic Isolation Between Input And Output":"No","American Bureau of Shipping Europe Ltd. (ABS)":"Yes","environmental category according to IEC 60721":"Climate class 3K3, 5 … 95% no condensation","Design Of The Mains Power Cut Bridging-Connection":"Dependent on connected battery and load current, see selection table battery module and mains buffering times as well as the relevant important information notes!","Voltage Increase Time Of The Output Voltage Typical":"60 ms","In Case Of Operation On Rechargeable Battery Typical":"8 W","input current at rated input voltage 24 V rated value":"6 A; + approx. 0.6 A with empty battery","Adjustable Response Value Voltage For Buffer Connection":"22 ... 25.5 V; Adjustable in 0.5 V increments","Product Feature Of The Enclosure Housing Can Be Lined Up":"Yes","Adjustable Response Value Voltage For Buffer Connection Preset":"22.5 V","Reverse Polarity Protection Against Input Voltage Polarity Reversal":"Yes","At Rated Output Voltage For Rated Value Of The Output Current Typical":"7 W","Reverse Polarity Protection Against Energy Storage Unit Polarity Reversal":"Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$158.31","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=342829&mlfb=6EP1931-2DC42","alternativesUrl":"https://aoctrl.com/api/mcp/products/6EP1931-2DC42/alternatives.json"},"ai":{"faq":[{"question":"What compliance documentation does this module carry?","answer":"It carries cULus-Listing (UL 508, CSA C22.2 No. 107.1), CE marking, EAC approval, and shipbuilding approvals from ABS and DNV GL. EMC compliance covers EN 55022 Class B and EN 61000-6-2."},{"question":"What are the key ratings for this DC UPS module?","answer":"Rated output current is 6 A, typical active power is 144 W, input voltage range is 22 to 29 V DC, and output voltage is input minus approximately 0.5 V. Charging current is selectable at 0.2 A or 0.4 A."},{"question":"What is the physical size and mounting method?","answer":"The enclosure is 50 mm wide, 125 mm high, and 125 mm deep. It snaps onto DIN rail EN 60715 (35×7.5/15). IP20 rated."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/6EP1931-2DC42","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/6EP1931-2DC42 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}}