{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1SFA895018R7020","brand":"ABB","brandSlug":"abb","productSlug":"1SFA895018R7020","canonicalUrl":"https://aoctrl.com/abb/1SFA895018R7020","factsUrl":"https://aoctrl.com/api/mcp/products/1SFA895018R7020","rawCanonicalId":null},"summary":{"shortDescription":"ABB PSTB720 softstarter, order code 1SFA895018R7020, rated 720 A in-line (400 kW at 400 V), 1247 A inside-delta (710 kW at 400 V), ramp 0–120 s, 400–690 V AC, electronic overload protection.","salesMarkdown":"## Rated for the load, not just the line The 1SFA895018R7020: The ABB PSTB720 softstarter carries a 720 A rated operational current in-line connection (Ie), good for a 400 kW motor at 400 V. Wired inside-delta, it handles 1247 A — 710 kW at 400 V — because the starter sees phase current, not line current. That inside-delta rating is the one to size for a heavy pump or conveyor start where the motor FLA pushes past 700 A. 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 down to 30 %. That range covers soft starting high-inertia loads (centrifuges, long conveyors) where a gradual torque ramp prevents mechanical shock. Main circuit terminals are bars with a 12.5 mm hole diameter — expect lug connections, not wire ferrules. Control circuit terminals tighten to 0.5 N·m and accept 1 x 2.5 mm² rigid. The supply circuit also takes 1 x 2.5 mm² rigid. Ambient operating temperature 0 to +50 °C; main terminals are IP00 per IEC 60529 and IEC 60947-1, so the starter needs to live inside a panel or enclosure. Communication is via a standard FieldBusPlug — no onboard Ethernet or serial; the plug accepts a fieldbus module (PROFIBUS, DeviceNet, etc.) for network control. Analog output 0–10 V for speed or current feedback to a PLC or drive display. ## Protection and signaling Built-in electronic overload protection with current limit adjustable 1.5–7× Ie. Starting capacity is 3× Ie for 15 seconds. Service factor 115 %. Separate fault, run, bypass, and overload signal relays (each yes) give discrete dry-contact feedback for the PLC or annunciator. Red LED for fault, yellow for protection indication. Switch for inside-delta connection is included on the unit — no external contactor reconfiguration needed when wiring the motor in delta. Rated control supply voltage 100–250 V AC; control circuit also accepts 24 V DC for the logic section.","metaTitle":"1SFA895018R7020 ABB PSTB720 Softstarter 720A, 400-690V, Ramp","metaDescription":"ABB PSTB720 softstarter (1SFA895018R7020) rated 720A in-line, 1247A inside-delta. Ramp 0-120s, 400-690V AC, electronic overload. Sourced to order. Request RFQ.","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 400 ... 690 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/1sfa895018r7020","alternativesUrl":"https://aoctrl.com/api/mcp/products/1SFA895018R7020/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 1SFA895018R7020?","answer":"This softstarter is sourced and quoted to order through independent distribution. Submit an RFQ for current availability and pricing."},{"question":"What is the ramp time on this PSTB720?","answer":"Ramp time is adjustable from 0 to 120 seconds, with initial voltage 30–70 % and step-down ramp 100–30 %."},{"question":"What communication interface does the PSTB720 use?","answer":"It uses a standard FieldBusPlug — a fieldbus module (e.g. PROFIBUS, DeviceNet) plugs in for network control."},{"question":"What compliance documentation is available for 1SFA895018R7020?","answer":"RoHS declaration is not needed per the manufacturer. The product is classified as Business To Business (B2B) and falls under WEEE Category 4 (Large Equipment). The datasheet and manual are referenced as 1SFC132005C0201 and 1SFC132003M0201."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/1SFA895018R7020","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/1SFA895018R7020 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}}