{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1SFA894003R7020","brand":"ABB","brandSlug":"abb","productSlug":"1SFA894003R7020","canonicalUrl":"https://aoctrl.com/abb/1SFA894003R7020","factsUrl":"https://aoctrl.com/api/mcp/products/1SFA894003R7020","rawCanonicalId":null},"summary":{"shortDescription":"ABB PST37 series soft starter, order code 1SFA894003R7020, 37 A rated operational current (in-line), 18.5 kW at 400 V, 0–120 s ramp time, screw terminals.","salesMarkdown":"The 1SFA894003R7020: Ramp time is adjustable from 0 to 120 seconds, with initial voltage during start settable between 30% and 70% of line voltage. The step-down special ramp can go from 100% down to 30% — gives you fine control over pump or conveyor soft-start profiles. Built-in electronic overload protection is standard, with a current limit function adjustable from 1.5 to 7× Ie and a starting capacity of 3× Ie for 15 seconds. That means you can set the overload curve to match the motor thermal model without an external relay. Control supply voltage is 100–250 V AC; the separate 24 V DC control circuit powers the logic. Screw terminals on the control circuit accept 1 × 2.5 mm² rigid, with a tightening torque of 0.5 N·m. Main circuit terminals are rated IP10 per IEC 60529 and IEC 60947-1 — that's finger-safe but not washdown-rated. The unit includes run, fault, bypass, and overload signal relays, plus a red fault LED and yellow protection LED for local diagnostics. ## Wiring and integration note Main circuit connecting capacity is 1 × 10 to 95 mm² rigid — sized for 37 A motor feeders. The supply circuit takes 1 × 2.5 mm². Standard FiledBusPlug communication interface is present; no fieldbus module is integrated into the base unit. The switch for inside-delta connection is built in, so you can reconfigure for delta-wound motors without an external contactor kit. Ambient operating temperature range is 0 to +50 °C; the 115% service factor provides headroom for continuous duty at nameplate rating. Documentation includes a datasheet (1SFC132005C0201) and instruction manual (1SFC132003M0201). The unit carries a 0.5 N·m tightening torque spec for control circuit terminals — worth noting for the IQ/OQ torque verification step if this goes into a validated line.","metaTitle":"ABB PST37 1SFA894003R7020 Soft Starter, 37 A, 18.5 kW","metaDescription":"ABB PST37 soft starter, 37 A in-line, 18.5 kW at 400 V. Integrated electronic overload, 0–120 s ramp. Active 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":"Screw Terminals","Analog Outputs":"0...10 volts","lifecycle_stage":"current","Run Signal Relay":"Yes","Product Main Type":"PST37","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 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":"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) 18.5 kW","Rated Operational Power - Inside Delta Connection":"at 400 V 30 kW","Popular Downloads/Data Sheet, Technical Information":"1SFC132005C0201","Rated Operational Current - In-Line Connection (Ie)":"37 A","Rated Operational Current - Inside Delta Connection":"64 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/1sfa894003r7020","alternativesUrl":"https://aoctrl.com/api/mcp/products/1SFA894003R7020/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 1SFA894003R7020 and how is it quoted?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock count or price is published here."},{"question":"What is the ramp time range on 1SFA894003R7020?","answer":"The ramp time is adjustable from 0 to 120 seconds, with initial voltage during start settable between 30% and 70% of line voltage."},{"question":"What communication interface does the PST37 use?","answer":"The unit has a standard FiledBusPlug communication interface, meaning it accepts a fieldbus plug-in module but does not integrate the protocol natively."},{"question":"What compliance documentation is available for 1SFA894003R7020?","answer":"The datasheet (1SFC132005C0201) and instruction manual (1SFC132003M0201) are published. RoHS status is listed as 'no declaration needed'; WEEE category is 5 (small equipment, B2B)."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/1SFA894003R7020","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/1SFA894003R7020 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}}