{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3UG4822-2AA40","brand":"Siemens","brandSlug":"siemens","productSlug":"3UG4822-2AA40","canonicalUrl":"https://aoctrl.com/siemens/3UG4822-2AA40","factsUrl":"https://aoctrl.com/api/mcp/products/3UG4822-2AA40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3UG4822-2AA40, current monitoring relay with digital setting, 0.05...10 A, 22.5 mm, snap-on, IP20.","salesMarkdown":"The Siemens 3UG4822-2AA40 is a SIRIUS current monitoring relay with a digital setting and LCD display, covering a measurable current range of 0.05...10 A. It runs on an 18...30 V DC supply and provides a relative repeat accuracy of 1%, so the trip point stays tight across the range — no fiddling with trimmers to get a repeatable threshold. The relay output is rated for 3 A at 250 V and 400 V at 50/60 Hz, and the auxiliary contacts handle 1 A at 24 V, 0.2 A at 125 V, and 0.1 A at 250 V. Clearance around the unit: 0 mm upwards, forwards, backwards, downwards, and at the side, so it can be packed tight against other devices without derating for airflow. It carries IP20 protection (finger-safe terminals) and a pollution degree of 2, which is the usual spec for clean, enclosed control panels. ## IO-Link and reset options IO-Link communication runs at COM2 (38.4 kBaud), so it can report the actual current value and fault status to a master without extra analog wiring. Auto-reset and external reset are both supported, giving flexibility for unattended restart or manual intervention after a fault clears. A start-up delay of 0...999.9 s is configurable, useful for filtering out inrush on motor starts or compressor cycles.","metaTitle":"Siemens 3UG4822-2AA40 SIRIUS Current Monitoring Relay, 0.05.","metaDescription":"Siemens SIRIUS 3UG4822-2AA40 current monitoring relay, digital setting, 0.05...10 A range, 22.5 mm, snap-on, IO-Link, IP20. Active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Process / Temperature Controllers"],"specifications":{"1":"0.05 ... 10 A","2":"0.05 ... 10 A","Depth":"91 mm","Solid":"24 ... 16","Width":"22.5 mm","Height":"94 mm","Upwards":"0 mm","at 24 V":"1 A","Forwards":"0 mm","Stranded":"24 ... 16","at 125 V":"0.2 A","at 250 V":"0.1 A","Backwards":"0 mm","Downwards":"0 mm","auto-RESET":"Yes","At The Side":"0 mm","When Starting":"0 ... 999.9 s","During Storage":"-40 ... +85 °C","External Reset":"Yes","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","During Transport":"-40 ... +85 °C","Fastening Method":"snap-on mounting","Product Function":"Current monitoring relay","Mounting Position":"any","Measurable Current":"0.05 ... 10 A","Product Brand Name":"SIRIUS","Degree Of Pollution":"2","Product Designation":"Current monitoring relay with digital setting","at AWG cables solid":"2x (24 ... 16)","protection class IP":"IP20","at 250 V at 50/60 Hz":"3 A","at 400 V at 50/60 Hz":"3 A","Design Of The Display":"LCD","IO-Link transfer rate":"COM2 (38,4 kBaud)","at AWG cables stranded":"2x (24 ... 16)","supply voltage 1 at DC":"18 ... 30 V","Between Input And Output":"Yes","For Main Current Circuit":"spring-loaded terminals","Relative Repeat Accuracy":"1 %","overcurrent detection DC":"Yes","Measurable Line Frequency":"500 ... 40 Hz","undercurrent detection DC":"Yes","Accuracy Of Digital Display":"+/-1 digit","Relative Metering Precision":"5 %","Operating Voltage Rated Value":"24 ... 24 V","Overcurrent Detection 1 Phase":"Yes","Overcurrent Detection 3 Phase":"No","Substance Prohibitance (Date)":"05/01/2012","current window recognition DC":"Yes","Type Of Current For Monitoring":"AC/DC","Undercurrent Detection 1 Phase":"Yes","Undercurrent Detection 3 Phases":"No","For Auxiliary And Control Circuit":"spring-loaded terminals","Design Of The Electrical Isolation":"Protective separation","Voltage Window Recognition 1 Phase":"No","Voltage Window Recognition 3 Phase":"No","supply voltage 1 at DC rated value":"24 V","With Lower Or Upper Limit Violation":"0 ... 999.9 s","operational current at 17 V minimum":"0.01 A","Surge Voltage Resistance Rated Value":"6 kV","Between Control And Auxiliary Circuit":"690 V","Type Of Voltage Of The Supply Voltage":"DC","With Degree Of Pollution 2 Rated Value":"690 V","protocol is supported IO-Link protocol":"Yes","due to burst according to IEC 61000-4-4":"2 kV","number of CO contacts delayed switching":"1","number of NC contacts delayed switching":"0","number of NO contacts delayed switching":"0","reference code according to IEC 81346-2":"K","Finely Stranded With Core End Processing":"0.25 ... 1.5 mm²","Number Of Poles For Main Current Circuit":"1","Finely Stranded Without Core End Processing":"0.25 ... 1.5 mm²","Internal Resistance Of The Measuring Circuit":"5 mΩ","shock resistance according to IEC 60068-2-27":"sinusoidal half-wave 15g / 11 ms","Between The Voltage Supply And Other Circuits":"Yes","operating frequency with 3RT2 contactor maximum":"5 000 1/h","vibration resistance according to IEC 60068-2-6":"1 ... 6 Hz: 15 mm, 6 ... 500 Hz: 2g","Adjustable Open/Closed-Circuit Current Principle":"Yes","ampacity of the semiconductor output in SIO mode":"200 mA","Mechanical Service Life (Switching Cycles) Typical":"10 000 002","Relative Temperature-Related Measurement Deviation":"5 %","electrostatic discharge according to IEC 61000-4-2":"6 kV contact discharge / 8 kV air discharge","Type Of Voltage Supply Via Input/Output Link Master":"Yes","Product Component Removable Terminal For Main Circuit":"Yes","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Adjustable Switching Hysteresis For Measured Current Value":"5 ... 10 mA","Thermal Current Of The Switching Element With Contacts Maximum":"5 A","continuous current of the DIAZED fuse link of the output relay":"4 A","Of The Address Range Of The Inputs With Cyclical Transfer Total":"4 byte","Of The Address Range Of The Outputs With Cyclical Transfer Total":"2 byte","point-to-point cycle time between master and IO-Link device minimum":"10 ms","Product Component Removable Terminal For Auxiliary And Control Circuit":"Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/3UG4822-2AA40/alternatives.json"},"ai":{"faq":[{"question":"What is the measurable current range of the 3UG4822-2AA40?","answer":"The measurable current range is 0.05...10 A, with a relative repeat accuracy of 1%."},{"question":"What supply voltage does the 3UG4822-2AA40 need?","answer":"It requires an 18...30 V DC supply."},{"question":"What is the width and mounting style of the 3UG4822-2AA40?","answer":"It is 22.5 mm wide and snaps onto a DIN rail in any mounting position."},{"question":"Does the 3UG4822-2AA40 support IO-Link?","answer":"Yes, it supports IO-Link at COM2 (38.4 kBaud)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3UG4822-2AA40","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/3UG4822-2AA40 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}}