{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"1SFA898218R7000","brand":"ABB","brandSlug":"abb","productSlug":"1SFA898218R7000","canonicalUrl":"https://aoctrl.com/abb/1SFA898218R7000","factsUrl":"https://aoctrl.com/api/mcp/products/1SFA898218R7000","rawCanonicalId":null},"summary":{"shortDescription":"ABB PSTX720 soft starter, 1SFA898218R7000, 720 A, 208–690 V AC, 50/60 Hz, auto phase sequence detection, ramp time 1–120 s, Modbus-RTU/TCP, Ethernet/IP, EtherCAT, Profibus, Profinet, DeviceNet, CANopen, BACnet-IP/MSTP, main circuit bars, IP00 terminals.","salesMarkdown":"## PSTX720 — what fits on the line side The ABB PSTX720 (1SFA898218R7000) is a 720 A soft starter for three-phase induction motors on 208–690 V AC supplies, 50/60 Hz. Auto phase sequence detection is baked in — it checks rotation before the ramp starts, saving a contactor and a callout on pump or conveyor direction. Ramp time is adjustable from 1 to 120 seconds, with initial voltage from 10 to 99 % and a step-down special ramp from 100 to 10 % for soft stop. Current limit function spans 1.5 to 7.5 x Ie. Fieldbus coverage is wide: Modbus-RTU, Modbus-TCP, Ethernet/IP, EtherCAT, DeviceNet, CANopen, Profibus, Profinet, BACnet-IP, and BACnet-MSTP. That list covers most PLC backbones without an extra gateway. Analog outputs are configurable as 0–10 V, 0–20 mA, or 4–20 mA for drive feedback to a VFD or SCADA input card. ## Protection and signalling — what trips and what tells you Built-in electronic overload protection with separate overload curves for start and run (dual overload). Protection functions include ground fault, earth fault, phase reversal, locked rotor, under/over voltage, current imbalance/underload, PTC connection, too-long start time, and too-long current limit. Warning outputs mirror most of these — current imbalance, underload, electronic overload time-to-trip, EOL, faulty fan, locked rotor, motor runtime limit, over/under voltage, phase loss (standby), power factor underload, short circuit (limp mode), THD(U), thyristor overload, and voltage imbalance. Four signal relays are standard — run, fault, bypass, and overload — each with a dedicated LED on the front panel (green for run, red for fault, yellow for protection). The control circuit runs on 24 V DC; the control supply accepts 100–250 V AC. Main circuit terminals are bars with a tightening torque of 45 N·m; control circuit connections accept rigid 1 x 2.5 mm² wire. Ambient operating temperature is -25 to +60 °C. Main terminals are IP00 per IEC 60529 and IEC 60947-1 — open bus bars, so the panel enclosure provides the ingress protection. The unit supports inside-delta connection for reduced cable sizing on the motor side. Service factor is rated at 100 %.","metaTitle":"ABB 1SFA898218R7000 PSTX720 Soft Starter, 720 A","metaDescription":"ABB PSTX720 soft starter with auto phase sequence detection, 1–120 s ramp, Modbus TCP/Ethernet/IP. Rated 208–690 V AC, 720 A.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Soft Starters"],"specifications":{"Function":"Auto phase sequence detection","Ramp Time":"1 ... 120 second [unit of time]","Communication":"Modbus-RTU; Modbus-TCP; Ethernet-IP; EtherCAT; DeviceNet; CANopen; Profibus; Profinet; BACnet-IP; BACnet-MSTP","Terminal Type":"Main Circuit: Bars","Analog Outputs":"0...10 V, 0...20 mA, 4...20 mA","Warning Details":"Current imbalance warning; Current underload warning; Electronic overload Time-to-trip; EOL warning; Faulty fan warning; Locked rotor warning; Motor runtime limit warning; Over voltage warning; Phase loss warning (for standby); Power factor underload warning; Short circuit warning (for Limp mode); THD(U) - Total Harmonic Distortion warning; Thyristor overload warning (SCR); Under voltage warning; Voltage imbalance warning","lifecycle_stage":"current","Run Signal Relay":"Yes","Product Main Type":"PSTX720","Tightening Torque":"Main Circuit 45 N·m","Fault Signal Relay":"Yes","Overload Protection":"Built-in electronic overload protection","Protection Function":"Bypass open protection; Current imbalance protection; Current underload protection; Dual overload (separate overload for start and run); Earth fault protection / ground fault protection; Electronic overload protection, EOL; Extension IO failure protection; Fieldbus failure protection; HMI failure protection; Locked rotor protection; Max number of starts/hour; Over voltage protection; Phase reversal protection; Power factor underload protection; PT-100 connection; PTC connection; Too long current limit protection; Too long start time protection; Under voltage protection; User defined protection; Voltage imbalance 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 ... 7.5 xle","Ambient Air Temperature":"Operation -25 ... +60 °C","Rated Operational Voltage":"208 ... 690 V AC","Service Factor Percentage":"100 %","Object Classification Code":"Q","Initial Voltage During Start":"10 ... 99 %","Popular Downloads/EPLAN Data":"9AAC185673_EPLAN","Signal Indication Fault (LED)":"Red","Integrated Electronic Overload":"Yes","Step Down Voltage Special Ramp":"100 ... 10 %","Material Compliance/WEEE Category":"5. Small Equipment (No External Dimension More Than 50 cm)","Rated Control Supply Voltage (Us)":"100 ... 250 V AC","Signal Indication Running R (LED)":"Green","Connecting Capacity Supply Circuit":"Rigid 1 x 2.5","IDEA Granular Category Code (IGCC)":"4740 >> Soft starter","Material Compliance/WEEE B2C / B2B":"Business To Business","Rated Control Circuit Voltage (Uc)":"24 V DC","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":"Following EU Directive 2011/65/EU and Amendment 2015/863 July 22, 2019","Popular Downloads/CAD Dimensional Drawing":"2CDC001079B0201","Technical UL/CSA/Horsepower Rating UL/CSA":"(200 ... 208 V AC) Three Phase 250 Hp","Technical UL/CSA/Tightening Torque UL/CSA":"Main Circuit 398.3","Popular Downloads/Instructions and Manuals":"1SFC132428M0201","Starting Capacity at Maximum Rated Current Ie":"4xIe for 10s","Rated Operational Power - In-Line Connection (Pe)":"(230 V) 200 kW","Rated Operational Power - Inside Delta Connection":"at 230 V 355 kW","Technical UL/CSA/Maximum Operating Voltage UL/CSA":"Main Circuit 690 V","Popular Downloads/Data Sheet, Technical Information":"1SFC132012C0201","Popular Downloads/Instructions and Manuals (Part 2)":"1SFC132081M0201","Popular Downloads/Instructions and Manuals (Part 3)":"1SFC132060M0201","Rated Operational Current - In-Line Connection (Ie)":"720 A","Rated Operational Current - Inside Delta Connection":"1247 A","Material Compliance/Toxic Substances Control Act - TSCA":"2CMT2023-006524","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/1sfa898218r7000","alternativesUrl":"https://aoctrl.com/api/mcp/products/1SFA898218R7000/alternatives.json"},"ai":{"faq":[{"question":"Does ABB PSTX720 (1SFA898218R7000) support Modbus TCP and Ethernet/IP?","answer":"Yes — the communication list includes Modbus-RTU, Modbus-TCP, Ethernet/IP, EtherCAT, DeviceNet, CANopen, Profibus, Profinet, BACnet-IP, and BACnet-MSTP. No external gateway required for any of these protocols."},{"question":"What is 1SFA898218R7000's listed ramp time?","answer":"The ramp time is adjustable from 1 to 120 seconds. Initial voltage during start can be set from 10 to 99 %, and the step-down special ramp (soft stop) from 100 to 10 %."},{"question":"What is the difference between ABB PSTX720 and PSTX370?","answer":"The PSTX720 is rated for 720 A, while the PSTX370 is rated for 370 A. Both share the same family features — auto phase sequence detection, the same fieldbus options, and the same protection set. The choice is driven by motor full-load current: the 720 A unit handles larger motors, typically above 370 A FLC."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/1SFA898218R7000","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/1SFA898218R7000 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}}