{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1042-4JB10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1042-4JB10","canonicalUrl":"https://aoctrl.com/siemens/3RV1042-4JB10","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1042-4JB10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS motor protection circuit breaker, 3RV1042-4JB10, 63 A continuous, CLASS 20 trip, 100 kA breaking at 400 V AC, 30 kW at 400 V, screw terminals, DIN rail mount.","salesMarkdown":"Rated at 690 V, it delivers a breaking capacity of 100 kA at 240 V and 400 V AC, dropping to 15 kA at 500 V and 7.5 kA at 690 V. At 400 V it handles motor loads up to 30 kW, making it suitable for medium-sized motors on pumps, fans, and compressors. Any mounting position is allowed, with zero clearance needed at the back or sides — so it fits tight in a crowded panel without derating for side-by-side placement. Dimensions are 70 mm wide, 165 mm high, 174 mm deep — a standard three-pole MCCB footprint that drops into existing SIRIUS or 3RV2/3RV1 panel layouts. Terminals are screw-type with box terminals for the main circuit, accepting solid conductors 2x (2.5... 16 mm²) and stranded 2x (10... 50 mm²) or 1x (10... 70 mm²). AWG equivalents are 2x (10... 1) solid. The auxiliary/control circuit also uses screw terminals. Finely stranded with core-end processing accepts 2x (2.5... 35 mm²) or 2.5... 50 mm². RoHS compliance is indicated by a substance prohibition date of 07/01/2006, covering the original EU RoHS directive. The auxiliary switch extension (product extension auxiliary switch: Yes) means you can add remote status signaling without a separate contactor block. ## Electrical ratings and performance Shock resistance is 25g for 11 ms, and surge voltage resistance is 6 kV, so it holds up in industrial environments with transient events. Maximum operating frequency in AC-3 duty is 15 operations per hour — fine for motor starting cycles on conveyors or pumps, but not for high-repetition jogging or rapid reversing without derating the duty cycle.","metaTitle":"Siemens 3RV1042-4JB10 SIRIUS Motor Protection Circuit Breake","metaDescription":"Siemens 3RV1042-4JB10 SIRIUS motor protection circuit breaker, 63 A continuous, CLASS 20, 100 kA breaking at 400 V, 30 kW at 400 V. DIN rail mount, IP20 front. Sourced to order.","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 20","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":"30 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":"15 kA","at AC at 690 V rated value":"7.5 kA","at AC-3 rated value maximum":"690 V","at AC in hot operating state":"34 W","Substance Prohibitance (Date)":"07/01/2006","Continuous Current Rated Value":"63 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":"11.3 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":"63 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":"45 ... 63 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=388633&mlfb=3RV1042-4JB10","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1042-4JB10/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RV1042-4JB10 and how do I get a price?","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 quote."},{"question":"What is 3RV1042-4JB10's listed depth?","answer":"The depth is 174 mm, with a width of 70 mm and height of 165 mm. Zero clearance needed at back or sides."},{"question":"What wire sizes does the 3RV1042-4JB10 accept?","answer":"Solid conductors: 2x (2.5... 16 mm²). Stranded: 2x (10... 50 mm²) or 1x (10... 70 mm²). AWG solid: 2x (10... 1). Finely stranded with ferrule: 2x (2.5... 35 mm²) or 2.5... 50 mm²."},{"question":"What compliance documentation does Siemens provide for 3RV1042-4JB10?","answer":"RoHS compliance is indicated by a substance prohibition date of 07/01/2006. The part carries the SIRIUS brand and is designed to IEC/EN 60947 standards. Full declarations and certificates are available from Siemens on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1042-4JB10","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/3RV1042-4JB10 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}}