{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1SFA895018R7000","brand":"ABB","brandSlug":"abb","productSlug":"1SFA895018R7000","canonicalUrl":"https://aoctrl.com/abb/1SFA895018R7000","factsUrl":"https://aoctrl.com/api/mcp/products/1SFA895018R7000","rawCanonicalId":null},"summary":{"shortDescription":"ABB PSTB720 soft starter, order code 1SFA895018R7000, 720 A in-line, 400 kW at 400 V, 400-690 V AC main circuit, built-in electronic overload protection, 0-120 s ramp time.","salesMarkdown":"## PSTB720 soft starter, 720 A in-line The ABB PSTB720 soft starter 1SFA895018R7000 is a 720 A in-line unit rated for 400 kW at 400 V, handling motors up to 690 V AC on the main circuit. The 720 A in-line rating means it directly switches the motor current without needing an inside-delta configuration for most applications up to that current. Built-in electronic overload protection eliminates the separate overload relay, saving panel space and wiring. Ramp time is adjustable from 0 to 120 seconds, giving you control over acceleration for pumps, conveyors, or compressors. ## Inside-delta capability for higher power When wired in inside-delta configuration, the PSTB720 handles 1247 A and 710 kW at 400 V — roughly 73% more current capacity than the in-line connection. This matters when the motor is larger than the in-line rating but you want to keep the same soft starter frame. The inside-delta wiring places the soft starter in the motor's delta legs, so each phase carries less current. The unit supports this natively with a switch for inside-delta connection. ## Control and communication Control supply voltage is 100-250 V AC; a separate 24 V DC control circuit handles the logic. Communication is via FieldBusPlug (Standard) — a modular plug-in interface for fieldbus connection, not hardwired. Analog output 0-10 V can feed a PLC or panel meter with the motor current or ramp status. Three signal relays — run, fault, and bypass — plus an overload signal relay give discrete status for each state. Main circuit terminals are bars with a 12.5 mm hole for cable lugs; control circuit terminals tighten to 0.5 N·m.","metaTitle":"1SFA895018R7000 ABB PSTB720 Soft Starter, 720 A, 400 kW, 400","metaDescription":"ABB PSTB720 soft starter 1SFA895018R7000. 720 A in-line, 400 kW at 400 V, built-in electronic overload, 0-120 s ramp. Current lifecycle stage. Sourced to order against 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/1sfa895018r7000","alternativesUrl":"https://aoctrl.com/api/mcp/products/1SFA895018R7000/alternatives.json"},"ai":{"faq":[{"question":"What is the ramp time range on the PSTB720?","answer":"The ramp time is adjustable from 0 to 120 seconds, covering soft starts for most motor loads from quick acceleration to gradual ramp-up."},{"question":"What communication interface does this soft starter use?","answer":"It uses a FieldBusPlug (Standard) interface — a modular plug-in connector for fieldbus protocols, not a fixed protocol."},{"question":"Where can I buy 1SFA895018R7000 and get current pricing?","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 lead time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/1SFA895018R7000","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/1SFA895018R7000 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}}