{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SP3740-3","brand":"Siemens","brandSlug":"siemens","productSlug":"5SP3740-3","canonicalUrl":"https://aoctrl.com/siemens/5SP3740-3","factsUrl":"https://aoctrl.com/api/mcp/products/5SP3740-3","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON, miniature circuit breaker (MCB), 1-pole, tripping characteristic E, 25 kA rated breaking capacity, 230/400 V AC, 50 Hz, DIN rail mount.","salesMarkdown":"## Siemens 5SP3740-3 — SENTRON 1-pole MCB, Characteristic E, 25 kA The Siemens 5SP3740-3 is a 1-pole SENTRON miniature circuit breaker with tripping characteristic E, rated for 230 V AC (50 Hz) and a breaking capacity of 25 kA per EN 60898. ## Physical Fit & Environmental Ratings Height 128 mm, depth 76.3 mm — fits standard 1.5-module DIN-rail cutouts. The depth dimension is the enclosure depth behind the panel face; verify clearance to the back wall or wiring duct. Ambient range -40 to 70 °C covers extreme cold storage or hot substation conditions. Shock rated 30 g, 11 ms duration; vibration 2 g, 5–150 Hz per IEC 60068-2-6 — survives transport and moderate machine vibration. Sealable via integrated locking slide for lock, wire seal, or cable tie.","metaTitle":"Siemens 5SP3740-3 SENTRON MCB, 1P E 25 kA 230/400 V","metaDescription":"Siemens 5SP3740-3 SENTRON miniature circuit breaker, 1-pole, tripping characteristic E, 25 kA breaking capacity at 230/400 V AC. Active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["1-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76.3 mm","title":"5SP3740-3","Height":"128 mm","Maximum":"70 °C","Minimum":"-40 °C","Sealable":"Yes","Rated Value":"25 kA","description":"Main miniature circuit breaker (SHU), 1-pole, E 40, 230/400 V","Solid Maximum":"50 mm²","Solid Minimum":"2.5 mm²","Design Of Pole":"1P","Number Of Poles":"1","lifecycle_stage":"current","Fastening Method":"DIN rail","Saddle Terminals":"Yes","Shock Resistance":"30 g, at least 3 impacts, impact duration 11 ms","Stranded Maximum":"50 mm²","Stranded Minimum":"2.5 mm²","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"Miniature circuit breaker","protection class IP":"IP40, with connected conductors","Overvoltage Category":"IV","Design Of The Product":"Main miniature circuit breaker","Depth Of The Enclosure":"76.3 mm","Fastening Method Other":"on DIN rail 35 mm acc. to EN 60715","Infeed At Box Terminal":"Yes","Suitability For Operation":"Residential buildings/infrastructure","Design Of The Locking Device":"Integrated locking slide, lockable by means of a lock, wire seal and cable ties","Number Of Modular Width Units":"1.5","Position Of Power Supply Cord":"Any","Tripping Characteristic Class":"E","supply voltage at AC rated value":"230 V","according to EN 60898 rated value":"25 kA","insulation voltage (Ui) rated value":"690 V","Supply Voltage Frequency Rated Value":"50 Hz","Surge Voltage Resistance Rated Value":"6 kV","Display Version For Switch Position Indicator":"OFF = green, ON = red","vibration resistance according to IEC 60068-2-6":"2 g, 20 frequency cycles 5 to 150 to 15 Hz","Mechanical Service Life (Operating Cycles) Typical":"20 000","power loss [W] for rated value of the current at AC in hot operating state per pole":"6.4 W"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/4339606afed312aa5046afea1d53082e.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=324227&mlfb=5SP3740-3"},"ai":{"faq":[],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SP3740-3","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/5SP3740-3 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}}