{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1042-4AA10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1042-4AA10","canonicalUrl":"https://aoctrl.com/siemens/3RV1042-4AA10","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1042-4AA10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RV1042-4AA10 motor protection circuit breaker, 16 A continuous rated current, CLASS 10 trip class, 100 kA breaking capacity at 400 V AC, screw terminals, IP20 front.","salesMarkdown":"The Siemens 3RV1042-4AA10 is a SIRIUS motor protection circuit breaker rated for 16 A continuous current with a CLASS 10 trip characteristic — meaning it will trip within 10 seconds at 7.2× rated current, fast enough to protect standard induction motors from locked-rotor heat buildup without nuisance tripping during normal start-up. It's designed for the main current circuit of a three-phase motor branch, with phase failure detection built in so a dropped phase won't let the motor single-phase and cook the winding. Rated for 7.5 kW motor load at 400 V AC, this breaker snaps onto a 35 mm DIN rail per EN 50022 and takes up 70 mm of panel width. The screw-type box terminals accept solid conductors up to 2× 16 mm² or stranded up to 1× 70 mm² — heavy enough for the feeder side of a moderate motor branch. ## SCCR headroom on the motor branch Where this breaker earns its keep out in the panel is the short-circuit current ratings. At 240 V and 400 V AC it interrupts 100 kA, dropping to 30 kA at 500 V and 12 kA at 690 V. The 21 W power dissipation at rated load (7 W per pole) means you should account for the heat in a densely packed panel — keep ventilation slots clear and don't sandwich it between high-dissipation drives. Zero clearance needed at the back or sides — you can butt it against adjacent devices without derating for spacing. Depth is 174 mm, height 165 mm, width 70 mm. The protection class on the front is IP20 — finger-safe for the panel face, but keep it inside an enclosure. Solid wire range is 2× (2.5 to 16 mm²); stranded with ferrule goes up to 2× 35 mm² or single 50 mm². That covers common motor feeder cables from 2.5 mm² for small motors up to 50 mm² for the 7.5 kW branch.","metaTitle":"Siemens 3RV1042-4AA10 SIRIUS Motor Protection Circuit Breake","metaDescription":"Siemens 3RV1042-4AA10 SIRIUS motor protection circuit breaker, 16 A continuous rating, CLASS 10 trip, 100 kA SCCR at 400 V. Screw terminals, DIN rail mount. Current lifecycle. Sour","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Protection Circuit Breakers (MPCB)"],"specifications":{"Depth":"174 mm","Solid":"2x (2.5 ... 16 mm²)","Width":"70 mm","Height":"165 mm","Stranded":"2x (10 ... 50 mm²), 1x (10 ... 70 mm²)","Backwards":"0 mm","Trip Class":"CLASS 10","At The Side":"0 mm","Rated Value":"690 V","During Storage":"-50 ... +80 °C","lifecycle_stage":"current","During Operation":"-20 ... +60 °C","During Transport":"-50 ... +80 °C","Fastening Method":"screw and snap-on mounting onto 35 mm standard mounting rail according to DIN EN 50022","Shock Resistance":"25g / 11 ms","Mounting Position":"any","Product Brand Name":"SIRIUS","Product Designation":"circuit breaker","at 400 V rated value":"7.5 kW","Design Of The Product":"for motor protection","Ground Fault Detection":"No","Phase Failure Detection":"Yes","For Main Current Circuit":"screw-type terminals with box terminals","at AC at 240 V rated value":"100 kA","at AC at 400 V rated value":"100 kA","at AC at 500 V rated value":"30 kA","at AC at 690 V rated value":"12 kA","at AC-3 rated value maximum":"690 V","at AC in hot operating state":"21 W","Substance Prohibitance (Date)":"07/01/2006","Continuous Current Rated Value":"16 A","at AWG cables for main contacts":"2x (10 ... 1), 1x (10 ... 2)","protection class IP on the front":"IP20","For Auxiliary And Control Circuit":"screw-type terminals","Product Extension Auxiliary Switch":"Yes","operating frequency at AC-3 maximum":"15 1/h","Surge Voltage Resistance Rated Value":"6 000 V","at AC in hot operating state per pole":"7 W","Finely Stranded With Core End Processing":"2x (2.5 ... 35 mm²), 2.5 ... 50 mm²","Number Of Poles For Main Current Circuit":"3","Touch Protection Against Electrical Shock":"finger-safe","number of CO contacts for auxiliary contacts":"0","operational current at AC-3 at 400 V rated value":"16 A","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Design Of The Overcurrent Release And Short-Circuit Release":"thermomagnetic","Arrangement Of Electrical Connectors For Main Current Circuit":"front side","Product Component Removable Terminal For Auxiliary And Control Circuit":"No","Mechanical Service Life (Switching Cycles) Of The Main Contacts Typical":"50 000","Adjustable Current Response Value Current Of The Current-Dependent Overload Release":"11 ... 16 A"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=401915&mlfb=3RV1042-4AA10","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1042-4AA10/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RV1042-4AA10 and how is it quoted?","answer":"Sourced to order through independent distribution. Submit an RFQ for current pricing and availability — confirmed at quote time, not listed here."},{"question":"What is the depth of 3RV1042-4AA10?","answer":"174 mm depth, 165 mm height, 70 mm width. Zero clearance needed at back or sides."},{"question":"What wire sizes does the 3RV1042-4AA10 accept?","answer":"Solid conductors up to 2× 16 mm²; stranded with ferrule up to 2× 35 mm² or single 70 mm². AWG equivalents are 2× 10 to 1 AWG solid, 2× 10 to 2 AWG stranded."},{"question":"Does 3RV1042-4AA10 have phase failure detection?","answer":"Yes, phase failure detection is included. Ground fault detection is not built in."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1042-4AA10","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/3RV1042-4AA10 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}}