{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RW4423-1BC36","brand":"Siemens","brandSlug":"siemens","productSlug":"3RW4423-1BC36","canonicalUrl":"https://aoctrl.com/siemens/3RW4423-1BC36","factsUrl":"https://aoctrl.com/api/mcp/products/3RW4423-1BC36","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS soft starter, 3RW4423-1BC36, 62 A at 40 °C, 690 V insulation voltage, integrated bypass, adjustable current limitation.","salesMarkdown":"The Siemens SIRIUS 3RW4423-1BC36 is a soft starter rated 62 A at 40 °C, with an insulation voltage of 690 V and an operating frequency of 50 to 60 Hz. It includes an integrated bypass contact system and adjustable current limitation, plus motor overload and intrinsic device protection. Above 40 °C, derate to 55 A at 50 °C and 50 A at 60 °C — plan your enclosure cooling if the ambient exceeds 40 °C. The 690 V insulation voltage (pollution degree 3 per IEC 60947-4-2) means it can be used on 400 V and 480 V systems with margin, but verify the line-to-line voltage does not exceed 690 V. The integrated bypass contact system eliminates the need for an external bypass contactor, reducing panel wiring and heat dissipation during run. Adjustable current limitation lets you set the starting current between 8% and 100% of the rated motor current — useful for soft-starting loads that need a controlled ramp. Mounting is screw fixing with a vertical surface orientation; the unit can be rotated ±90° or tilted ±22.5° front/back. Clearance requirements: 100 mm above, 75 mm below, 5 mm at the sides — tight side clearance helps in dense panels. ## Wiring and connections Main current circuit uses box terminals accepting stranded wire 2x (4 to 50 mm²) or solid 2x (0.5 to 2.5 mm²). Auxiliary and control circuits use screw-type terminals for 2x (20 to 14 AWG). Maximum wire length from the soft starter to the motor is 500 m — sufficient for most industrial layouts but check if your run exceeds that. The inside-delta circuit configuration is supported, which can reduce the starter's current rating requirement for six-lead motors. ## Protection and diagnostics Motor overload protection is built in, along with intrinsic device protection (e.g., thyristor overtemperature). An external reset input allows remote fault reset. A display provides fault signal indication — no need to add a separate annunciator.","metaTitle":"Siemens 3RW4423-1BC36 SIRIUS Soft Starter, 62A, 690V","metaDescription":"Siemens SIRIUS 3RW4423-1BC36 soft starter, 62A at 40°C, 690V insulation, integrated bypass, adjustable current limitation, motor overload protection. Active production.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Soft Starters"],"specifications":{"Depth":"270mm","Solid":"2x (0.5 ... 2.5 mm²)","Width":"170mm","title":"3RW4423-1BC36","Height":"192mm","Upwards":"100mm","Stranded":"2x (4 ... 50 mm²)","Downwards":"75mm","Thyristors":"Yes","At The Side":"5mm","description":"SIRIUS soft starter Values at 575 V, 50 °C standard: 32 A, 25 hp Inside-delta: 55 A, 50 hp 400-690 V AC, 115 V AC Screw terminals!!! Phased-out product!!! Successor is SIRIUS 3RW5, Preferred successor type is >>3RW5524-1HA16<<","During Storage":"-25 ... +80°C","External Reset":"Yes","lifecycle_stage":"current","During Operation":"60°C","Fastening Method":"screw fixing","Minimum Load [%]":"8%","Mounting Position":"with vertical mounting surface +/-90° rotatable, with vertical mounting surface +/- 22.5° tiltable to the front and back","Product Brand Name":"SIRIUS","Degree Of Pollution":"3, acc. to IEC 60947-4-2","Product Designation":"Soft starter","Wire Length Maximum":"500m","Derating Temperature":"40°C","Inside-Delta Circuit":"Yes","at 50 Hz rated value":"115V","at 60 Hz rated value":"115V","at 40 °C rated value":"62A","at 50 °C rated value":"55A","at 60 °C rated value":"50A","For Auxiliary Contacts":"2x (20 ... 14)","For Main Current Circuit":"box terminal","Motor Overload Protection":"Yes","Using Both Clamping Points":"2x (10 ... 1/0)","Intrinsic Device Protection":"Yes","Adjustable Current Limitation":"Yes","Using The Back Clamping Point":"10 ... 2/0","Insulation Voltage Rated Value":"690V","Using The Front Clamping Point":"10 ... 2/0","Operating Frequency Rated Value":"50 ... 60Hz","Display Version For Fault Signal":"Display","Integrated Bypass Contact System":"Yes","For Auxiliary And Control Circuit":"screw-type terminals","Product Component Motor Brake Output":"Yes","during storage according to IEC 60721":"1K6 (only occasional condensation), 1C2 (no salt mist), 1S2 (sand must not get inside the devices), 1M4","reference code according to EN 61346-2":"Q","during operation according to IEC 60721":"3K6 (no formation of ice, no condensation), 3C3 (no salt mist), 3S2 (sand must not get into the devices), 3M6","during transport according to IEC 60721":"2K2, 2C1, 2S1, 2M2 (max. fall height 0.3 m)","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²)","Number Of Poles For Main Current Circuit":"3","Evaluation Of Thermistor Motor Protection":"Yes","at standard circuit at 40 °C rated value":"22kW","at standard circuit at 50 °C rated value":"25hp","Finely Stranded Without Core End Processing":"2x (4 ... 35 mm²)","number of CO contacts for auxiliary contacts":"1","number of NC contacts for auxiliary contacts":"0","number of NO contacts for auxiliary contacts":"3","Type Of Voltage Of The Control Supply Voltage":"AC","at inside-delta circuit at 40 °C rated value":"37kW","at inside-delta circuit at 50 °C rated value":"50hp","Control Supply Voltage Frequency 1 Rated Value":"50Hz","Control Supply Voltage Frequency 2 Rated Value":"60Hz","Installation Altitude At Height Above Sea Level":"5 000m","continuous operating current [% of Ie] at 40 °C":"115%","Operating Voltage At Standard Circuit Rated Value":"400 ... 690V","at 690 V at standard circuit at 40 °C rated value":"37kW","contact rating of auxiliary contacts according to UL":"B300 / R300","Operating Voltage At Inside-Delta Circuit Rated Value":"400 ... 600V","Relative Negative Tolerance Of The Operating Frequency":"-10%","Relative Positive Tolerance Of The Operating Frequency":"10%","For Auxiliary Contacts Finely Stranded With Core End Processing":"2x (20 ... 16)","Relative Negative Tolerance Of The Control Supply Voltage Frequency":"-10%","Relative Positive Tolerance Of The Control Supply Voltage Frequency":"10%","Relative Negative Tolerance Of The Operating Voltage At Standard Circuit":"-15%","Relative Positive Tolerance Of The Operating Voltage At Standard Circuit":"10%","power loss [W] at operational current at 40 °C during operation typical":"10W","relative negative tolerance of the control supply voltage at AC at 50 Hz":"-15%","relative negative tolerance of the control supply voltage at AC at 60 Hz":"-15%","relative positive tolerance of the control supply voltage at AC at 50 Hz":"10%","relative positive tolerance of the control supply voltage at AC at 60 Hz":"10%","Adjustable Motor Current For Motor Overload Protection Minimum Rated Value":"7A","Relative Negative Tolerance Of The Operating Voltage At Inside-Delta Circuit":"-15%","Relative Positive Tolerance Of The Operating Voltage At Inside-Delta Circuit":"10%"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2,116.00","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/eeab8d99adf2cb1380e7ea7bbc342c65.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=109966&mlfb=3RW4423-1BC36"},"ai":{"faq":[{"question":"What are the key ratings for this soft starter?","answer":"Rated 62 A at 40 °C, 690 V insulation voltage, 50/60 Hz operating frequency. Integrated bypass, adjustable current limitation, and motor overload protection are included."},{"question":"What wire sizes does the 3RW4423-1BC36 accept?","answer":"Main circuit box terminals accept stranded 2x (4 to 50 mm²) or solid 2x (0.5 to 2.5 mm²). Auxiliary/control screw terminals accept 2x (20 to 14 AWG)."},{"question":"What clearance is needed around the unit?","answer":"100 mm above, 75 mm below, and 5 mm at the sides. Mounting is screw fixing on a vertical surface, rotatable ±90° or tiltable ±22.5°."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RW4423-1BC36","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3RW4423-1BC36 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}