{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1SFA894020R7000","brand":"ABB","brandSlug":"abb","productSlug":"1SFA894020R7000","canonicalUrl":"https://aoctrl.com/abb/1SFA894020R7000","factsUrl":"https://aoctrl.com/api/mcp/products/1SFA894020R7000","rawCanonicalId":null},"summary":{"shortDescription":"ABB PSTB1050 softstarter, order code 1SFA894020R7000, 1050 A rated operational current in-line connection, 560 kW at 400 V, 0-120 s ramp time, built-in electronic overload protection.","salesMarkdown":"The 1SFA894020R7000: The 0-120 second ramp time lets you tune acceleration for conveyors, pumps, or fans so the load doesn't jerk the driveline. Starting capacity is 3x Ie for 15 seconds, which covers most standard induction motor starts without oversizing. The 1050 A in-line rating is the number you spec against the motor nameplate FLA — it's the continuous current the softstarter carries without bypass. The 1810 A inside-delta rating applies when you wire the softstarter in the motor's delta legs, which reduces the current through each device phase by a factor of √3; that's the configuration that gets you 1000 kW from a single unit. Built-in electronic overload protection (1.5-7x Ie current limit function) means you can omit a separate overload relay from the starter assembly — one less component to wire and panel-space to budget. The run, fault, bypass, and overload signal relays give the PLC a clean status picture without adding interface modules. Main circuit terminals are bars with a 12.5 mm hole — expect to land lugs, not ferrules. Control circuit torque is 0.5 N·m; the supply circuit accepts rigid 1 x 2.5 mm². The FiledBusPlug (Standard) communication interface lets you drop a fieldbus connector directly onto the unit without a separate gateway card. RoHS compliance is declared as 'no declaration needed' — the part falls under WEEE Category 4 (Large Equipment, any external dimension >50 cm), B2B scope. The relevant manual is 1SFC132003M0201 and the datasheet is 1SFC132005C0201.","metaTitle":"ABB PSTB1050 1SFA894020R7000 Softstarter, 1050 A","metaDescription":"ABB PSTB1050 softstarter 1SFA894020R7000, 1050 A in-line / 1810 A delta, 560 kW at 400 V. Built-in electronic overload, 0-120 s ramp. Current production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":["Soft Starters"],"specifications":{"Ramp Time":"0 ... 120 second [unit of time]","Communication":"FiledBusPlug(Standard)","Terminal Type":"Main Circuit: Bars","Analog Outputs":"0...10 volts","lifecycle_stage":"current","Run Signal Relay":"Yes","Product Main Type":"PSTB1050","Tightening Torque":"Control Circuit 0.5 N·m","Fault Signal Relay":"Yes","Overload Protection":"Build-in electronic overload protection","Rated Frequency (f)":"50/60 Hz","By-pass Signal Relay":"Yes","Degree of Protection":"acc. to IEC 60529, IEC 60947-1, EN 60529 Main Terminals IP00","Overload Signal Relay":"Yes","Current Limit Function":"1.5 ... 7xIe","Ambient Air Temperature":"Operation 0 ... +50 °C","Rated Operational Voltage":"Main Circuit 208 ... 600 V AC","Service Factor Percentage":"100 %","Object Classification Code":"Q","Initial Voltage During Start":"30 ... 70 %","Signal Indication Fault (LED)":"Red","Integrated Electronic Overload":"Yes","Step Down Voltage Special Ramp":"100 ... 30 %","Connecting Capacity Main Circuit":"Hole Diameter 12.5 mm","Material Compliance/WEEE Category":"4. Large Equipment (Any External Dimension More Than 50 cm)","Rated Control Supply Voltage (Us)":"100 ... 250 V AC","Connecting Capacity Supply Circuit":"Rigid 1 x 2.5","Material Compliance/WEEE B2C / B2B":"Business To Business","Rated Control Circuit Voltage (Uc)":"DC Operation 24 V","Signal Indication Protection (LED)":"Yellow","Switch for Inside Delta Connection":"Yes","Connecting Capacity Control Circuit":"Rigid 1 x 2.5 mm²","Material Compliance/RoHS Information":"No declaration needed","Popular Downloads/Instructions and Manuals":"1SFC132003M0201","Starting Capacity at Maximum Rated Current Ie":"3xIe for 15s","Rated Operational Power - In-Line Connection (Pe)":"(400 V) 560 kW","Rated Operational Power - Inside Delta Connection":"at 400 V 1000 kW","Popular Downloads/Data Sheet, Technical Information":"1SFC132005C0201","Rated Operational Current - In-Line Connection (Ie)":"1050 A","Rated Operational Current - Inside Delta Connection":"1810 A","Material Compliance/Conflict Minerals Reporting Template (CMRT)":"9AKK108467A5658"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://www.abb.com/global/en/products/1sfa894020r7000","alternativesUrl":"https://aoctrl.com/api/mcp/products/1SFA894020R7000/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 1SFA894020R7000?","answer":"Pricing and availability are confirmed at quote time. Submit an RFQ through this listing; we source the part from our multi-distributor network and return a current price and lead-time commitment."},{"question":"What is 1SFA894020R7000's listed ramp time?","answer":"The ramp time is adjustable from 0 to 120 seconds. This lets you match the acceleration profile to the load — short for low-inertia fans, longer for conveyors or high-inertia pumps."},{"question":"What is the closest alternative to this PSTB1050 softstarter?","answer":"Within the same PSTB family, the PSTB1050 is the 1050 A in-line variant. The next step down is the PSTB850 (850 A in-line) and the step up is the PSTB1250 (1250 A in-line). All share the same form factor, control voltage options, and fieldbus plug interface — the swap is purely a current-rating decision."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/1SFA894020R7000","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/1SFA894020R7000 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}}