{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1SFA895005R7020","brand":"ABB","brandSlug":"abb","productSlug":"1SFA895005R7020","canonicalUrl":"https://aoctrl.com/abb/1SFA895005R7020","factsUrl":"https://aoctrl.com/api/mcp/products/1SFA895005R7020","rawCanonicalId":null},"summary":{"shortDescription":"ABB PST50 soft starter, 1SFA895005R7020, 50 A rated operational current inline, 85 A inside-delta, 45 kW at 400 V inside-delta, 0…120 s ramp, 100…250 V AC control supply, screw terminals.","salesMarkdown":"The ABB PST50 1SFA895005R7020 is a soft starter for three-phase induction motors, rated 50 A inline (Ie) and 85 A inside-delta connection, delivering 45 kW at 400 V in delta. It carries built-in electronic overload protection (current limit adjustable 1.5–7× Ie) and a programmable ramp time from 0 to 120 seconds — enough to handle high-inertia loads like conveyors or pumps without mechanical shock. Control supply is 100–250 V AC; the unit also accepts a separate 24 V DC control circuit for logic isolation. The 50 A inline rating is the figure to match against your motor FLA for standard three-wire connection. The 85 A inside-delta rating applies when the starter is wired in the delta legs of a wye-delta motor — that configuration delivers 45 kW at 400 V. If your motor is smaller, the 115 % service factor gives headroom for occasional overload without nuisance tripping. Ramp time spans 0–120 seconds, with initial voltage adjustable 30–70 % and a step-down voltage ramp from 100–30 %. That range covers soft start and soft stop for most pump, fan, and conveyor applications. The built-in electronic overload eliminates the need for a separate overload relay — one less component to size and wire. ## Integration notes Main circuit terminals accept rigid 1 x 10…95 mm² cable; control and supply wiring is 1 x 2.5 mm². Tightening torque for the control circuit is 0.5 N·m. The unit includes run, fault, bypass, and overload signal relays — four dry contacts for PLC or HMI feedback without extra interface relays. Communication is via a FiledBusPlug (standard) — the optional fieldbus adapter plugs into the front slot for PROFIBUS, DeviceNet, or Modbus connectivity. The analog output is 0–10 V, usable for speed or current signal to a drive or meter.","metaTitle":"ABB PST50 Soft Starter 1SFA895005R7020, 50A Inline, 45kW Del","metaDescription":"ABB PST50 soft starter 1SFA895005R7020: 50A inline / 85A inside-delta, 45kW at 400V, built-in electronic overload, 0-120s ramp, 100-250V AC control. Current production. Sourced to","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":"Screw Terminals","Analog Outputs":"0...10 volts","lifecycle_stage":"current","Run Signal Relay":"Yes","Product Main Type":"PST50","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 IP10","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":"Rigid 1 x 10 ... 95 mm²","Material Compliance/WEEE Category":"5. Small Equipment (No 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) 25 kW","Rated Operational Power - Inside Delta Connection":"at 400 V 45 kW","Popular Downloads/Data Sheet, Technical Information":"1SFC132005C0201","Rated Operational Current - In-Line Connection (Ie)":"50 A","Rated Operational Current - Inside Delta Connection":"85 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/1sfa895005r7020","alternativesUrl":"https://aoctrl.com/api/mcp/products/1SFA895005R7020/alternatives.json"},"ai":{"faq":[{"question":"What is the ramp time on this soft starter?","answer":"The ramp time is adjustable from 0 to 120 seconds, with initial voltage from 30–70 % and a step-down ramp from 100–30 %."},{"question":"What communication interface does 1SFA895005R7020 support?","answer":"It has a standard FiledBusPlug slot that accepts optional fieldbus modules for PROFIBUS, DeviceNet, or Modbus."},{"question":"What compliance documentation is available for this soft starter?","answer":"The unit is classified as B2B under WEEE, and no RoHS declaration is needed. The data sheet and manual are available via downloads 1SFC132003M0201 and 1SFC132005C0201."},{"question":"Where can I buy the ABB PST50 1SFA895005R7020?","answer":"This part is sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/1SFA895005R7020","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/1SFA895005R7020 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}}