{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1042-4MA10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1042-4MA10","canonicalUrl":"https://aoctrl.com/siemens/3RV1042-4MA10","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1042-4MA10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS motor protection circuit breaker, 3RV1042-4MA10, 100 A rated continuous current, 45 kW at 400 V, Trip Class 10, 100 kA breaking capacity at 400 V, screw terminals, DIN rail mount.","salesMarkdown":"The Siemens SIRIUS 3RV1042-4MA10 is a motor protection circuit breaker rated for 100 A continuous current and 45 kW at 400 V. Trip Class 10 ensures the breaker trips within 10 seconds at 7.2× rated current, matching standard motor start profiles for pumps, fans, and compressors. Screw-type box terminals for the main circuit accept solid 2x (2.5 … 16 mm²) or stranded 2x (10 … 50 mm²), covering most motor feeder sizes up to 70 mm² single. Mounts via screw and snap-on onto 35 mm DIN rail per EN 50022, with 0 mm clearance needed at the sides or rear — tight panel layouts are fine. ## Integration notes The 3RV1042-4MA10 occupies 70 mm width on the DIN rail, with 174 mm depth and 165 mm height. Any mounting position — horizontal or vertical — works, but derate the 44 W power dissipation if enclosed without airflow. The auxiliary switch slot accepts standard SIRIUS blocks for remote status.","metaTitle":"Siemens 3RV1042-4MA10 SIRIUS Motor Protection Circuit Breake","metaDescription":"Siemens 3RV1042-4MA10 SIRIUS motor protection circuit breaker, 100 A continuous, 45 kW at 400 V, 100 kA breaking capacity. Current lifecycle, sourced to order. Request quote.","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":"45 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":"10 kA","at AC at 690 V rated value":"6 kA","at AC-3 rated value maximum":"690 V","at AC in hot operating state":"44 W","Substance Prohibitance (Date)":"07/01/2006","Continuous Current Rated Value":"100 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":"14.7 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":"100 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":"80 ... 100 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=12858&mlfb=3RV1042-4MA10","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1042-4MA10/alternatives.json"},"ai":{"faq":[{"question":"What is the breaking capacity of 3RV1042-4MA10 at 400 V?","answer":"100 kA at 400 V AC. At 690 V it drops to 6 kA, so verify the available fault current at your service voltage."},{"question":"Will 3RV1042-4MA10 drop into a panel specified for 3RV6021-4DA10 without rewiring?","answer":"Both are SIRIUS motor protection breakers on the same 35 mm DIN rail footprint, but terminal ratings differ. The 3RV1042-4MA10 uses screw-type box terminals for the main circuit; the 3RV6021-4DA10 may have different lug sizes. Check the conductor cross-section range against your existing wiring before swapping."},{"question":"What compliance documentation does Siemens provide for 3RV1042-4MA10?","answer":"The part carries a RoHS substance prohibition date of 07/01/2006, confirming compliance with EU RoHS. Standard Siemens documentation includes the CE declaration and IEC/EN 60947-2 test certificates; request them with your RFQ."},{"question":"Where can I buy 3RV1042-4MA10 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 — submit an RFQ for a firm offer."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1042-4MA10","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/3RV1042-4MA10 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}}