{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1342-4JC10","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1342-4JC10","canonicalUrl":"https://aoctrl.com/siemens/3RV1342-4JC10","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1342-4JC10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS circuit breaker for starter combinations, 3RV1342-4JC10, 63 A continuous, 100 kA breaking at 400 V, 30 kW motor rating at 400 V, 3-pole, screw terminals, DIN rail mount.","salesMarkdown":"## What this SIRIUS breaker does in the panel The Siemens 3RV1342-4JC10 is a 3-pole circuit breaker from the SIRIUS family, designed specifically for starter combinations — meaning it integrates directly with contactors to form a coordinated motor starter pair. Rated 63 A continuous and 30 kW at 400 V (AC-3), it handles the motor branch circuit for pumps, conveyors, and compressors up to that load. The IP20 front protection means it's finger-safe for the panel builder but expects an enclosure door for washdown or outdoor duty. ## Breaking capacity and selectivity at a glance Breaking capacity drops with voltage: 100 kA at 240 V and 400 V, then 15 kA at 500 V, and 7.5 kA at 690 V. The 690 V rating of 7.5 kA still covers most motor branch faults on 690 V industrial networks. Main circuit terminals accept solid conductors 2x (2.5... 16 mm²) and stranded 2x (10... 50 mm²) or 1x (10... 70 mm²). For AWG, 2x (10... 1) solid and 1x (10... 2) stranded. The screw-type box terminals are standard for panel builders — no special tooling needed. Auxiliary and control circuits use separate screw terminals. Shock resistance 25g / 11 ms. RoHS compliance date 07/01/2006 (substance prohibitance).","metaTitle":"Siemens 3RV1342-4JC10 SIRIUS Circuit Breaker, 63 A, 100 kA a","metaDescription":"Siemens 3RV1342-4JC10 SIRIUS circuit breaker for starter combinations. 63 A continuous, 100 kA breaking at 400 V, 30 kW motor rating. DIN rail mount, IP20 front. Active production,","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","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 starter combinations","Ground Fault Detection":"No","Phase Failure Detection":"No","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":"magnetic","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"}},"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=265852&mlfb=3RV1342-4JC10","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1342-4JC10/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RV1342-4JC10 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 price and lead time."},{"question":"What is 3RV1342-4JC10's breaking capacity at 400 V?","answer":"100 kA at 400 V AC — the same as at 240 V, dropping to 15 kA at 500 V and 7.5 kA at 690 V."},{"question":"What compliance documentation does this brand provide for 3RV1342-4JC10?","answer":"RoHS compliance is documented with a substance prohibitance date of 07/01/2006. The part carries IP20 front protection and finger-safe touch protection."},{"question":"Will 3RV1342-4JC10 drop into a panel specified around 3RV6021-4DA10 without rewiring?","answer":"Both are 3-pole SIRIUS breakers on 35 mm DIN rail with zero side/rear clearance, so the footprint is identical. Terminal capacity differs — verify conductor sizes against your existing wiring before swapping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1342-4JC10","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/3RV1342-4JC10 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}}