{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA9123-0RL30","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA9123-0RL30","canonicalUrl":"https://aoctrl.com/siemens/3VA9123-0RL30","factsUrl":"https://aoctrl.com/api/mcp/products/3VA9123-0RL30","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON RCD820 advanced residual current device, Type A, 3-pole, rated current 160 A, adjustable residual current 0.03…30 A, rated voltage 100-690 V, load-side mounted accessory for 3VA2.","salesMarkdown":"The Siemens 3VA9123-0RL30 is a SENTRON RCD820 advanced residual current device (RCD) — a Type A module that mounts on the load side of a 3VA2 molded-case circuit breaker. It's the piece that gives you adjustable ground-fault protection on a 160 A, 3-pole feeder, with a rated voltage range of 100-690 V AC. The headline here is the adjustable residual current: you can set the trip threshold anywhere from 0.03 A up to 30 A, across ten discrete steps (0.03, 0.05, 0.1, 0.3, 0.5, 1, 3, 5, 10, 30 A). That range covers everything from sensitive personnel protection at 30 mA to ground-fault alarm-only levels at 30 A, so one module handles multiple coordination tiers in a distribution panel. The tripping time is also adjustable — from 0 ms up to 10 000 ms in eleven steps (0, 0.06, 0.15, 0.3, 0.5, 1.0, 2.0, 3.0, 5.0, 10.0 s). That makes it usable for selective coordination (short delay on the upstream RCD) or for alarm-only monitoring where you don't want nuisance trips on temporary leakage. This is a screw-fixed accessory that sits behind the 3VA2 breaker. The infeed can land on either the top or bottom of the RCD module — that's a real time-saver when you're retrofitting into an existing busbar layout and the line-side orientation is already set. The main current circuit connects via busbar (no loose cable lugs to torque), and the module is sealable — useful for utility metering or contractual installations where you need to lock the settings after commissioning. Front-panel protection is IP40, which is typical for a panel-mount device — enough to keep a dropped screwdriver off the live terminals, but not rated for washdown. This lives inside a switchboard, not on a machine. Dimensions are 105 mm wide by 115 mm high by 86 mm deep — a three-pole-wide footprint that matches the 3VA2 breaker it clips onto. The 86 mm depth includes the module body; check your enclosure depth if you're adding this to a shallow gland-plate panel. ## Communication and monitoring features The RCD820 supports remote-controlled tripping and communication with residual current equipment — so you can wire it into a PLC or building management system for remote status. It also has an electrical trip indicator (a flag or LED visible on the front) and a communication-based trip indicator for the remote side. A pre-alarm function triggers at 30% and 60% of the set residual current threshold. That's useful for predictive maintenance: you see the leakage creeping up before it hits the trip point, especially on wet or aging cable runs. You can select between RCD mode (trip on fault) or monitoring mode (alarm only, no trip) — so the same hardware works for both protection and leakage tracking without a separate ground-fault relay. This part is listed as Active in the manufacturer's lifecycle system. It's a current-production accessory for the 3VA2 platform, so it's not a phase-out or end-of-life item you'd need to stockpile.","metaTitle":"Siemens 3VA9123-0RL30 SENTRON RCD820, 160A, 3-Pole, Type A","metaDescription":"Siemens 3VA9123-0RL30 SENTRON RCD820 residual current device. 160A, 3-pole, Type A, adjustable 0.03-30A. Active, sourced to order. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Breaker Accessories"],"specifications":{"Depth":"86 mm","Width":"105 mm","title":"3VA9123-0RL30","Height":"115 mm","Maximum":"80 °C","Minimum":"-40 °C","description":"residual current device RCD820 advanced RCD type A load side mounted rated resid. current 0.03...30A at 50/60Hz adjustable tv 0...10000ms 3-pole In=160A Ue=100-690V accessory for: 3VA2","Number Of Poles":"3","lifecycle_stage":"current","Fastening Method":"screw fixing","Product Brand Name":"SENTRON","Product Designation":"Accessories","Design Of The Product":"Residual current protection module type A","power loss [W] / maximum":"10 W","Product Feature / Sealable":"Yes","protection class IP / on the front":"IP40","Type Of Trip Indicator / Electrical":"Yes","Type Of Trip Indicator / Communication":"Yes","Response Value / Of The Residual Current":"0.03;0.05;0.1;0.3;0.5;1;3;5;10;30","operational current / at AC / rated value":"160 A","Operating Frequency / Rated Value / Maximum":"60 Hz","Product Function / Remote-Controlled Tripping":"Yes","position / of the infeed / on the RCD component":"Top or bottom","Product Function / Integrated / Alarm Management":"Pre-alarm indication 30% and 60%","Set Values / Of The Limit Value Of Not Tripping Time":"0;0.06;0.15;0.3;0.5;1.0;2.0;3.0;5.0;10.0","product function / selectable RCD or monitoring mode":"Yes","Product Function / Selectable Tripping Characteristic":"No","Type Of Electrical Connection / For Main Current Circuit":"busbar connection","Product Function / Communication With Residual Current Equipment":"Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$433.07","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/7a9cd7e95c38e28a7f3c674c687a75c7.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=370034&mlfb=3VA9123-0RL30"},"ai":{"faq":[{"question":"What is 3VA9123-0RL30's depth?","answer":"The depth is 86 mm. That's the module body depth; add clearance for the busbar connection and any cable bend radius behind it."},{"question":"What compliance documentation does Siemens provide for this RCD?","answer":"The product carries the SENTRON brand and is designed for IEC-based distribution systems. Specific declarations (RoHS, REACH, UL) are available from the manufacturer's documentation portal using the order code 3VA9123-0RL30."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA9123-0RL30","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/3VA9123-0RL30 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}}