{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1SFA894019R7000","brand":"ABB","brandSlug":"abb","productSlug":"1SFA894019R7000","canonicalUrl":"https://aoctrl.com/abb/1SFA894019R7000","factsUrl":"https://aoctrl.com/api/mcp/products/1SFA894019R7000","rawCanonicalId":null},"summary":{"shortDescription":"ABB PSTB840 softstarter, order code 1SFA894019R7000, 840 A rated operational current in-line connection, 450 kW at 400 V, 208-600 V AC main circuit, integrated electronic overload protection, FieldBusPlug communication, ramp time 0-120 s.","salesMarkdown":"## Softstarter for heavy motor starts The ABB PSTB840 (1SFA894019R7000) is a softstarter rated for 840 A in-line connection, delivering 450 kW at 400 V — sized for large induction motors driving pumps, conveyors, or compressors in industrial plants. The 208-600 V AC main circuit voltage range covers standard low-voltage networks globally. Built-in electronic overload protection eliminates the need for a separate overload relay, saving panel space and wiring. The current limit function is adjustable from 1.5 to 7 times the rated current, giving flexibility for different starting torque requirements. Ramp time is configurable from 0 to 120 seconds, allowing a smooth acceleration profile matched to the load. Initial voltage during start can be set between 30% and 70% of line voltage, with a step-down voltage special ramp from 100% down to 30% for soft stopping. ## Control and communication Control supply voltage is 100-250 V AC; a separate 24 V DC control circuit voltage is also available for logic-level interfacing. The unit includes run, fault, by-pass, and overload signal relays, plus a red fault LED and yellow protection LED for local status indication. Communication is via a standard FieldBusPlug, allowing direct connection to a fieldbus network without additional gateway hardware. Analog output provides 0-10 V for speed or current feedback to a PLC or drive controller. Main circuit terminals are bars with a 12.5 mm hole diameter for bolted connections; control circuit terminals accept rigid 1 x 2.5 mm² wire with a tightening torque of 0.5 N·m. The inside-delta connection option enables higher starting capacity — 1455 A and 800 kW at 400 V — for demanding applications.","metaTitle":"ABB PSTB840 1SFA894019R7000 Softstarter, 840 A, 450 kW","metaDescription":"ABB PSTB840 softstarter 1SFA894019R7000, 840 A in-line (450 kW at 400 V), 208-600 V AC, integrated overload, FieldBusPlug, ramp 0-120 s. Current production. Quoted 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":"PSTB840","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":"115 %","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) 450 kW","Rated Operational Power - Inside Delta Connection":"at 400 V 800 kW","Popular Downloads/Data Sheet, Technical Information":"1SFC132005C0201","Rated Operational Current - In-Line Connection (Ie)":"840 A","Rated Operational Current - Inside Delta Connection":"1455 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/1sfa894019r7000","alternativesUrl":"https://aoctrl.com/api/mcp/products/1SFA894019R7000/alternatives.json"},"ai":{"faq":[{"question":"What is the ramp time range for 1SFA894019R7000?","answer":"The ramp time is adjustable from 0 to 120 seconds, with initial voltage during start configurable between 30% and 70% of line voltage."},{"question":"What communication interface does 1SFA894019R7000 use?","answer":"It uses a standard FieldBusPlug for direct fieldbus network connection, plus a 0-10 V analog output for feedback."},{"question":"What is the rated operational current and power of 1SFA894019R7000?","answer":"Rated operational current is 840 A in-line connection, with rated power of 450 kW at 400 V. Inside-delta connection delivers 1455 A and 800 kW at 400 V."},{"question":"Where can I buy 1SFA894019R7000 and get current pricing?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Contact us for current pricing and availability confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/1SFA894019R7000","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/1SFA894019R7000 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}}