{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1SFA894018R7020","brand":"ABB","brandSlug":"abb","productSlug":"1SFA894018R7020","canonicalUrl":"https://aoctrl.com/abb/1SFA894018R7020","factsUrl":"https://aoctrl.com/api/mcp/products/1SFA894018R7020","rawCanonicalId":null},"summary":{"shortDescription":"ABB PSTB720 soft starter, 1SFA894018R7020, 720 A in-line (1247 A inside-delta), 400 kW at 400 V, ramp 0-120 s, built-in electronic overload, FieldBusPlug communication, 100-250 V AC control supply.","salesMarkdown":"The ABB PSTB720 soft starter (order code 1SFA894018R7020) handles 720 A in-line (Ie) and 1247 A inside-delta, rated 400 kW at 400 V in-line and 710 kW inside-delta at the same voltage. That inside-delta connection lets you size the starter for a fraction of the motor full-load current — common on larger three-phase induction motors where the line current exceeds the starter's direct rating. Built-in electronic overload protection (1.5–7x Ie current limit) eliminates a separate overload relay from the panel. Control supply accepts 100–250 V AC; a separate 24 V DC control circuit handles logic-level inputs. Ramp time is adjustable from 0 to 120 s, with initial voltage during start settable 30–70 % and step-down voltage ramp from 100–30 % — enough curve shaping for most pump, fan, and conveyor starts. Communication is via a standard FieldBusPlug (Profibus, DeviceNet, or CANopen depending on the plug), so the starter integrates into a fieldbus network without a separate gateway. Main circuit terminals are bars (hole diameter 12.5 mm) — expect lug-type connections, not screw-clamp. Control circuit terminals take rigid 1 x 2.5 mm² wire at 0.5 N·m torque. The supply circuit also accepts rigid 1 x 2.5 mm². IP00 on the main terminals means the starter lives inside an enclosure; plan for a panel with adequate clearance and ventilation, given the 720 A through-bus.","metaTitle":"1SFA894018R7020 PSTB720 Soft Starter, 720 A In-Line, 400 kW,","metaDescription":"1SFA894018R7020 PSTB720 soft starter, 720 A in-line (1247 A inside-delta), 400 kW at 400 V. Built-in electronic overload, ramp 0-120 s, FieldBusPlug. Current lifecycle stage. Quote","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":"PSTB720","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) 400 kW","Rated Operational Power - Inside Delta Connection":"at 400 V 710 kW","Popular Downloads/Data Sheet, Technical Information":"1SFC132005C0201","Rated Operational Current - In-Line Connection (Ie)":"720 A","Rated Operational Current - Inside Delta Connection":"1247 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/1sfa894018r7020","alternativesUrl":"https://aoctrl.com/api/mcp/products/1SFA894018R7020/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 1SFA894018R7020 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and ETA."},{"question":"What is 1SFA894018R7020's ramp time setting?","answer":"The ramp time is adjustable from 0 to 120 seconds, with initial voltage during start settable 30–70 % and a step-down voltage ramp from 100–30 %. This covers most soft-start profiles for pumps, fans, and conveyors."},{"question":"What communication protocol does 1SFA894018R7020 support?","answer":"It accepts a standard FieldBusPlug (Profibus, DeviceNet, or CANopen depending on the plug), integrating the starter into a fieldbus network without a separate gateway."},{"question":"What compliance documentation does ABB provide for 1SFA894018R7020?","answer":"The part carries no RoHS declaration needed per the listing (material compliance marked as 'No declaration needed'). WEEE category is large equipment (any external dimension >50 cm), B2B. The popular downloads include instruction manual 1SFC132003M0201 and datasheet 1SFC132005C0201."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/1SFA894018R7020","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/1SFA894018R7020 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}}