{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SM3622-4","brand":"Siemens","brandSlug":"siemens","productSlug":"5SM3622-4","canonicalUrl":"https://aoctrl.com/siemens/5SM3622-4","factsUrl":"https://aoctrl.com/api/mcp/products/5SM3622-4","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SM3 series, Residual Current Circuit Breaker (RCCB), 2-pole, Type B, short-time delayed, In: 25 A, IΔn: 300 mA, Un: 230 V AC, 10 kA SCCR, DIN rail mount.","salesMarkdown":"It is rated at 25 A with a 300 mA residual tripping current, Type B, meaning it detects AC, pulsating DC, and smooth DC fault currents — essential for circuits with variable-speed drives, UPS systems, or PV inverters that can generate DC leakage. The short-time delayed characteristic (marked as short-time delayed / K-type in some references) provides selectivity against nuisance tripping from transient surges or inrush currents, making it suitable for sub-distribution boards where coordination with downstream RCCBs is needed. The 70 mm installation depth matches the common 70 mm depth of distribution boards and enclosures — no extra clearance needed behind the rail. The housing is finger and back-of-hand safe per the protection against electrical shock rating. The 300 mA residual rating is not for personnel protection (that requires 30 mA or less) — it is sized for equipment protection and fire prevention in circuits where a 30 mA device would nuisance-trip due to natural leakage from filters, drives, or long cable runs. The short-time delayed design (3 kA surge current resistance) lets it ride through lightning-induced surges or capacitor-switching transients without tripping, while still clearing a genuine earth fault. Silicon-free construction (product feature / silicon-free: Yes) matters for automotive paint-shop or semiconductor fab installations where silicone outgassing can cause adhesion or contamination issues. Mechanical service life of 10 000 switching cycles is typical for a protective device — not a contactor, so it is not intended for frequent operational switching.","metaTitle":"Siemens 5SM3622-4 SENTRON RCCB, 25A 300mA Type B, 2-Pole","metaDescription":"Siemens 5SM3622-4 SENTRON RCCB, 25 A rated current, 300 mA residual, Type B, short-time delayed, 10 kA SCCR, 2-pole, 230 V AC, DIN rail. Current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Residual Current Breakers (RCCB/RCBO)"],"specifications":{"Depth":"70 mm","Width":"72 mm","Height":"90 mm","Maximum":"45 °C","Minimum":"-25 °C","Rated Value":"50 Hz","Mounting type":"DIN rail (REG)","Number of poles":"2","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Maximum Permissible":"75 °C","Minimum Permissible":"-40 °C","Product designation":"RCCB","Protection class IP":"IP20, if the distribution board is installed, with connected conductors","at AC / rated value":"230 V","Overvoltage category":"III","Design of the product":"Short-time delayed","Number of width units":"4","Type of fault current":"B","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","circuit-breaker / Design":"5SM3","Short-circuit current rating":"10 kA","Current / at AC / rated value":"25 A","Product feature / silicon-free":"Yes","For Testing Equipment / Minimum":"195 V","Position / of power supply cord":"Top or bottom (bottom for SIGRES function also in switched-off state)","Protection against electrical shock":"Finger and back-of-hand safe","Surge current resistance / rated value":"3 kA","Switching function / short-term delayed":"Yes","Tripping residual current / rated value":"300 mA","Size of installation devices / acc. to DIN 43880":"1","Mechanical service life (switching cycles) / typical":"10 000"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$551.92","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=281379&mlfb=5SM3622-4","alternativesUrl":"https://aoctrl.com/api/mcp/products/5SM3622-4/alternatives.json"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 5SM3622-4?","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 5SM3622-4's listed depth (70 mm) on this component line?","answer":"The 5SM3622-4 has a depth of 70 mm (installation depth also 70 mm), which matches the standard depth of most distribution boards and enclosures — no extra clearance behind the DIN rail is needed."},{"question":"What is 5SM3622-4's listed width (72 mm) on this component line?","answer":"The 5SM3622-4 has a width of 72 mm, which corresponds to 4 width units (modular width units) on a standard DIN rail. This is wider than a typical single-pole MCB (1 width unit = 18 mm) because it is a 2-pole RCCB with a larger internal mechanism."},{"question":"Will 5SM3622-4 drop into a panel that was specified around 5SL4363-7 without rewiring?","answer":"No — the 5SL4363-7 is a 3-pole miniature circuit breaker (MCB) with a different function, pole count, and width (54 mm / 3 width units). The 5SM3622-4 is a 2-pole RCCB (72 mm / 4 width units) and serves a different protective role (earth leakage vs overcurrent). They are not drop-in interchangeable; the panel design and wiring would need to change."},{"question":"What compliance documentation does this brand provide for 5SM3622-4 (RoHS, REACH, UL, IEC)?","answer":"The 5SM3622-4 is a Siemens SENTRON device designed to IEC/EN 61008 standards for RCCBs. It carries CE marking for the European market. For specific RoHS, REACH, or UL documentation, the manufacturer provides declarations and certificates — these are typically available through the Siemens Industry Online Support portal or upon request with an RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SM3622-4","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/5SM3622-4 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}}