{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1SCA022657R8790","brand":"ABB","brandSlug":"abb","productSlug":"1SCA022657R8790","canonicalUrl":"https://aoctrl.com/abb/1SCA022657R8790","factsUrl":"https://aoctrl.com/api/mcp/products/1SCA022657R8790","rawCanonicalId":null},"summary":{"shortDescription":"ABB 1SCA022657R8790 MCU2 motor control unit, 380-690 VAC sensing, 24 VDC aux supply, 17 digital inputs and 9 LED outputs, IP20.","salesMarkdown":"## What it sits between on the panel The ABB 1SCA022657R8790 is an MCU2 motor control unit — a panel-side accessory that watches a 380-690 VAC mains feed (Vmeas) and drives field-side I/O off a 24 VDC aux supply (Uaux1), so the same module can interlock a starter or feed status back to a higher-level controller without a separate signal relay. On the input side it carries 17 digital inputs and 2 general inputs (MCU2 capability), which is enough headroom for contactor status, breaker position, and a couple of analog-style signals like thermistor or PTC feedback on a single starter cubicle. Nine LED outputs give the front-of-panel indication a wireman needs — run, fault, trip, and a handful of spares — without bolting on a separate indicator tower. Short-circuit-protected transistor outputs sit in the 20-32 mA range, so they will drive standard 24 V panel LEDs without an interposing relay. ## Power and physical fit The output voltage window of 14.0-25 VDC matches a standard 24 VDC control rail, so wiring lands on the same terminal block family as the rest of the cubicle — no exotic supply needed.","metaTitle":"ABB 1SCA022657R8790 Motor Control Unit, MCU2, 380-690 VAC","metaDescription":"ABB 1SCA022657R8790 MCU2 motor control unit for 380-690 VAC mains with 24 VDC aux. Quoted to order against an RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Servo Motors"],"specifications":{"In":"0,1-3,2 A","title":"Motor Control Unit","Weight":"1.4 Kg","description":"Motor Control Unit","Product type":"Motor Control Unit","Functionality":"MCU2","Output voltage":"14.0-25 VDC","Shipping Weight":"2.5 Kg","lifecycle_stage":"current","U<sub>aux1</sub>":"24 VDC","V<sub>meas</sub>":"380-690 VAC","Estimated Lead Time":"Usually ships in 1-10 working days.","Protection Class IP":"20","Dimensions (L x W x H)":"10.3cm x 11.0cm x 14.5cm","Number of digital input":"MCU2 =: 17","Number of general input":"MCU2 = 2","LED output Number of LED output":"MCU2 = 9","Power consumption of U<sub>aux2</sub>":"Rated power 10 VA","Power consumption of U<sub>aux1 </sub>":"MCU2 = 8.2 W","Output current (short circuit protected)":"20-32 mA"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2,016.00","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/48a9fb68b030e9adb578ba0a263107ec.pdf","sourceUrl":null},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/abb/1SCA022657R8790","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/abb/1SCA022657R8790 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}}