{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"5SY7401-7CC","brand":"Siemens","brandSlug":"siemens","productSlug":"5SY7401-7CC","canonicalUrl":"https://aoctrl.com/siemens/5SY7401-7CC","factsUrl":"https://aoctrl.com/api/mcp/products/5SY7401-7CC","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 5SY7401-7CC miniature circuit breaker, 1 A rated current, C tripping characteristic, 4-pole, 400 V AC, 50 kA breaking capacity per IEC 60947-2.","salesMarkdown":"## What this 1 A C-curve 4-pole MCB is for The Siemens 5SY7401-7CC is a SENTRON miniature circuit breaker rated 1 A at 400 V AC, with a C tripping characteristic that handles inrush currents up to 5–10× rated before tripping — so it's sized for moderate motor starts or transformer inrush on a panel, not just resistive lighting loads. The 4-pole (4P) version switches all four phases, meaning it's the right fit for a three-phase-plus-neutral feeder in a distribution board where you need coordinated isolation. Breaking capacity is 50 kA per IEC 60947-2 and 5 kA per UL 1077 / CSA C22.2 No.235 — that IEC figure says it can safely interrupt a 50 kA prospective fault current at 400 V without welding contacts or venting arc gas into adjacent gear, which is the spec that matters for industrial panel SCCR compliance. If your load is purely resistive (heaters, incandescent lighting) a B-curve would trip faster, but for the mix of loads you see on a typical machine feeder, C-curve is the right call. Terminals accept solid or stranded copper from 0.75 mm² up to 35 mm², which covers everything from a 1.5 mm² control circuit up to a 10 mm² feeder. Tightening torque is 2.5–3.5 N·m, standard for this class — no special tooling needed. The 5 kA UL/CSA rating is lower but still covers most North American commercial panels; if you need the full 50 kA for a UL 508A panel, check the specific series variant. That covers unheated electrical rooms and outdoor enclosures in most climates. It's halogen-free and silicon-free, so it won't outgas corrosive compounds in a sealed enclosure with sensitive electronics. Installation depth is 70 mm (the body is 76 mm deep overall), so you need at least 80 mm of enclosure depth to clear the terminals and wiring space. The 5SY7401-7CC is a 4-pole C-curve 1 A breaker. If your BOM was built around a 5SY6602-8 (which is a different pole count and rating), this won't drop in without rewiring — pole count and amperage have to match. For a direct functional second-source within the same SENTRON family, the 5SY7140-8CC is a 4-pole C-curve but at a higher current rating; verify your load before substituting.","metaTitle":"Siemens 5SY7401-7CC SENTRON MCB, 1A C-Curve 4P 400V AC 50kA","metaDescription":"Siemens 5SY7401-7CC SENTRON miniature circuit breaker, 1 A, C-curve, 4-pole, 400 V AC, 50 kA breaking capacity per IEC 60947-2. Current production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["4-Pole MCB (DIN Rail)"],"specifications":{"Depth":"76 mm","Solid":"0.75 ... 35 mm²","Width":"72 mm","title":"5SY7401-7CC","Height":"90 mm","Sealable":"Yes","Stranded":"0.75 ... 35 mm²","Rated Value":"50/60 Hz","description":"Miniature circuit breaker 400 V 15kA, 4-pole, C, 1A","Halogen-Free":"Yes","Silicon-Free":"Yes","Mounting type":"Quick assembly system","During Storage":"-40 ... +75 °C","Number of poles":"4","Type of voltage":"AC","lifecycle_stage":"current","Mounting position":"any","Installation depth":"70 mm","Product brand name":"SENTRON","Ambient temperature":"-25 ... +55 °C","Product designation":"Miniature circuit breaker","Protection class IP":"IP20, with connected conductors","at AC / rated value":"400 V","Overvoltage category":"III","Combined Terminal Top":"Yes","Number of width units":"4","Number of poles / Note":"4P","acc. to DIN EN 61346-2":"F","acc. to DIN EN 81346-2":"F","Combined Terminal Bottom":"Yes","circuit-breaker / Design":"5SY7CC","Suitability for operation":"Mechanical engineering / industry","Current / at AC / rated value":"1 A","Tripping characteristic class":"C","at DC / rated value / maximum":"72 V","Position / of power supply cord":"Any","acc. to IEC 60947-2 / rated value":"50 kA","Product feature / Touch protection":"Yes","Influence of the surrounding temperature":"max. 95% to 55°C, max. 55% to 70°C, max. 35% to 75°C","at AC / acc. to UL 1077 and CSA C22.2 No.235":"5 kA","Tightening torque / with screw-type terminals":"2.5 ... 3.5 N·m","Product function / neutral conductor switching":"No","with multi-phase operation / at AC / rated value":"440 V","with single-phase operation / at AC / rated value":"440 V","Mechanical service life (switching cycles) / typical":"10 000","Tightening torque [lbf·in] / with screw-type terminals":"22 ... 31 lbf·in"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/cd28c80df305f7d04447216c64e58f91.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=506971&mlfb=5SY7401-7CC"},"ai":{"faq":[{"question":"How do I get current pricing and availability for 5SY7401-7CC?","answer":"Submit an RFQ through this listing. We source through independent distribution and confirm availability and current pricing at quote time — no automated stock figures here."},{"question":"What is the breaking capacity of 5SY7401-7CC?","answer":"50 kA per IEC 60947-2 at 400 V AC, and 5 kA per UL 1077 and CSA C22.2 No.235. The IEC figure is the one that governs industrial panel SCCR compliance."},{"question":"What wire sizes does the 5SY7401-7CC accept?","answer":"Solid or stranded copper from 0.75 mm² up to 35 mm². The screw terminals require 2.5–3.5 N·m torque."},{"question":"Will 5SY7401-7CC drop into a panel specified for 5SY6602-8?","answer":"No — the 5SY6602-8 is a different pole count and current rating. Pole count and amperage must match the circuit design; verify your BOM before substituting."},{"question":"What compliance documentation does Siemens provide for this MCB?","answer":"The part carries IEC 60947-2 and UL 1077 / CSA C22.2 No.235 certifications. It is halogen-free and silicon-free. Standard Siemens documentation includes RoHS and REACH declarations — request these with your RFQ."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/5SY7401-7CC","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/5SY7401-7CC 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}}