{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM2342-0","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM2342-0","canonicalUrl":"https://aoctrl.com/siemens/5SM2342-0","factsUrl":"https://aoctrl.com/api/mcp/products/5SM2342-0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SM2342-0, 4-pole instantaneous RCD, AC type, 40 A rated current, 30 mA fault trip, 50 Hz, IP20.","salesMarkdown":"The Siemens 5SM2342-0 is a SENTRON 4-pole instantaneous RCD (residual current device) designed for AC systems at 50 Hz. The AC type means it detects sinusoidal residual currents only; no pulsed DC or smooth DC component handling. That's fine for general lighting and heater circuits, but if you've got VFDs, UPS, or rectifier loads downstream, you'll want a Type A or B unit instead. Depth is 77 mm, width 124 mm, height 90 mm. Installation depth 70 mm means the body sits 7 mm proud of the rail; check gland plate clearance if you're packing a shallow enclosure. Mounts in any position, top or bottom feed. ## Thermal derating curve At 50 °C it's 36 A; at 60 °C it's 34 A; at 70 °C it's 32 A. The -40 °C to 75 °C storage range covers most shipping and idle conditions. This is a current-production part — no end-of-life notice on record. The SENTRON RCD line is a standard catalog item; availability is stable through distribution.","metaTitle":"Siemens 5SM2342-0 SENTRON RCD, 4-pole 40 A 30 mA AC","metaDescription":"Siemens 5SM2342-0 SENTRON 4-pole RCD, 40 A rated, 30 mA AC trip, 50 Hz, IP20. Current-production part sourced to order. Request a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"77 mm","Width":"124 mm","title":"5SM2342-0","Height":"90 mm","Maximum":"75 °C","Minimum":"-40 °C","Sealable":"No","description":"RC unit for 5SY, 4-pole, type AC, In: 40 A, 30 mA, Un AC: 400 V","Design Of Pole":"4 poles","Number Of Poles":"4","lifecycle_stage":"current","Fastening Method":"REG","Mounting Position":"any","at AC rated value":"40 A","Installation Depth":"70 mm","Product Brand Name":"SENTRON","Product Variations":"for 5SY","Degree Of Pollution":"2","Product Designation":"RCD-unit","protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage Category":"III","Design Of The Product":"instantaneous","Residual Current Type":"AC","at 40 °C rated value":"37.2 A","at 45 °C rated value":"37.2 A","at 50 °C rated value":"36 A","at 55 °C rated value":"34.8 A","at 60 °C rated value":"34 A","at 65 °C rated value":"33.2 A","at 70 °C rated value":"32 A","OFF-delay time adjustable":"No","For Testing Equipment Minimum":"195 V","Number Of Modular Width Units":"3","Position Of Power Supply Cord":"top or bottom","Rated Fault Current Adjustable":"No","Protection Function False Tripping":"Yes","Tripping Fault Current Rated Value":"30 mA","insulation voltage (Ui) rated value":"460 V","Surge Voltage Resistance Rated Value":"4 000 V","Value Range Of The Operating Frequency":"50 Hz","reference code according to IEC 81346-2":"F","Type Of Voltage Of The Operating Voltage":"AC","Value Range Of The Supply Voltage Frequency":"50 Hz","Mechanical Service Life (Operating Cycles) Typical":"10 000","for rated value of the current at AC in hot operating state per pole":"3.6 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$22.86","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/b107cf9e3e01fdcd322795b02b10bb02.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=393984&mlfb=5SM2342-0"},"ai":{"faq":[{"question":"What is 5SM2342-0's depth?","answer":"77 mm overall; installation depth is 70 mm. That's the body depth behind the panel face."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM2342-0","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/5SM2342-0 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}}