{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM3314-3","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM3314-3","canonicalUrl":"https://aoctrl.com/siemens/5SM3314-3","factsUrl":"https://aoctrl.com/api/mcp/products/5SM3314-3","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SM3 series RCCB, 2-pole, 40 A rated, 30 mA residual trip, Type F fault current, short-time delayed, 10 kA short-circuit current rating, DIN rail mount.","salesMarkdown":"The Siemens SENTRON 5SM3314-3 is a 2-pole residual current circuit breaker (RCCB) rated for 40 A at 230 V AC, 50 Hz, with a 30 mA residual trip threshold. It's classified as Type F — designed to detect AC residual currents plus pulsating DC and high-frequency fault currents common on variable-speed drives and inverter-fed loads. The short-time delayed switching function gives it selectivity against transient surges, so nuisance tripping on motor start-ups or capacitor banks is less likely. ## Thermal derating and conductor sizing The 40 A rating holds at ambient temperatures up to 45 °C. Above that, it derates linearly: 38.4 A at 50 °C, 36.8 A at 55 °C, 35.2 A at 60 °C, 33.6 A at 65 °C, and 32 A at 70 °C (–). If your panel runs warm — say, near a transformer or in a non-ventilated enclosure — size the upstream breaker for the derated figure, not the nameplate 40 A. Terminal blocks accept solid or stranded conductors from 1 to 16 mm², with a tightening torque of 2.5 to 3 N·m. That covers most branch-circuit wiring up to 6 AWG. Snaps onto standard DIN rail, occupies 2 width units, and installs 70 mm deep. Mounting position is unrestricted; supply can enter from top or bottom. Overvoltage category III means it's rated for fixed-installation distribution panels, not for plug-in equipment.","metaTitle":"Siemens 5SM3314-3 RCCB, 2-pole, 40 A, 30 mA, Type F, 10 kA","metaDescription":"Siemens SENTRON 5SM3314-3 RCCB, 2-pole, 40 A rated, 30 mA trip, Type F, short-time delayed, 10 kA SCCR. Current production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Solid":"1 ... 16 mm²","Stranded":"1 ... 16 mm²","at 40 Cel":"40 A","at 45 Cel":"40 A","at 50 Cel":"38.4 A","at 55 Cel":"36.8 A","at 60 Cel":"35.2 A","at 65 Cel":"33.6 A","at 70 Cel":"32 A","Rated Value":"50 Hz","Mounting type":"DIN rail (REG)","During Storage":"-40 ... +75 °C","Number of poles":"2","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Ambient temperature":"-25 ... +45 °C","Operating frequency":"50Hz","Product designation":"RCCB","Protection class IP":"IP20, if the distribution board is installed, with connected conductors","Overvoltage category":"III","Design of the product":"Short-time delayed","Number of width units":"2","Type of fault current":"F","I2t-value / permissible":"70 000 A²·s","circuit-breaker / Design":"5SM3","Short-circuit current rating":"10 kA","Current / at AC / rated value":"40 A","Product feature / silicon-free":"Yes","Position / of power supply cord":"top or bottom","Protection against electrical shock":"Finger and back-of-hand safe","Supply voltage / at AC / rated value":"230 V","Surge current resistance / rated value":"3 kA","Switching function / short-term delayed":"Yes","Tripping residual current / rated value":"30 mA","Tightening torque / with screw-type terminals":"2.5 ... 3 N·m","Size of installation devices / acc. to DIN 43880":"1","Supply voltage / for testing equipment / minimum":"100 V","Mechanical service life (switching cycles) / typical":"10 000"}},"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=60193&mlfb=5SM3314-3","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SM3314-3/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 5SM3314-3 and how do I get a price?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Submit a request for quote (RFQ) to confirm current availability and pricing."},{"question":"What is 5SM3314-3's listed solid and stranded conductor range?","answer":"Both solid and stranded conductors are accepted from 1 to 16 mm²."},{"question":"What compliance documentation does this brand provide for 5SM3314-3?","answer":"The product is silicon-free. Standard SENTRON documentation includes CE declaration and manufacturer's test certificates; specific RoHS/REACH/UL/IEC declarations are available from Siemens upon request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM3314-3","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/5SM3314-3 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}}