{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"S8M-CP04-RS","brand":"Omron","brandSlug":"omron","productSlug":"S8M-CP04-RS","canonicalUrl":"https://aoctrl.com/omron/S8M-CP04-RS","factsUrl":"https://aoctrl.com/api/mcp/products/S8M-CP04-RS","rawCanonicalId":null},"summary":{"shortDescription":"Omron S8M series, multicircuit power protector, S8M-CP04-RS, 24VDC supply, 0.5mA–3.8A trip range, DIN-rail mount, screw terminals.","salesMarkdown":"The S8M-CP04-RS is a DIN-rail mounted multicircuit protector from Omron's S8M series, combining overcurrent, overtemperature, overvoltage, and undervoltage protection in one unit. It accepts a 24VDC supply and trips across a range of 0.5mA to 3.8A with a voltage window of 18.0 to 28.8VDC, making it a single-point safeguard for sensitive RS-232 communication circuits and low-power control loops. ## Why the trip range matters The 0.5mA lower limit catches leakage faults that a standard breaker would ignore — critical when you're protecting a 24V serial link where a few milliamps of ground fault can corrupt data or drift a sensor reading. The 3.8A upper end covers most small relays, solenoids, and indicator loads you'd find in a control cabinet. If your load pulls more than that, this isn't the protector for that circuit. ## Mounting and termination Snaps onto standard 35mm DIN rail — no drilling, no backplate. Screw terminals accept 0.2–2.5 mm² solid or stranded wire; strip 8 mm to avoid stray whiskers under the clamp. Rated for -10°C to 60°C ambient, so it lives in a ventilated panel, not a hot enclosure corner.","metaTitle":"Omron S8M-CP04-RS Multicircuit Protector, 24VDC, 0.5mA-3.8A","metaDescription":"S8M-CP04-RS DIN-rail power protector with overcurrent, overvoltage, undervoltage, and overtemperature protection. Active production. RFQ for pricing.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Power Supplies"],"specifications":{"title":"S8M-CP04-RS","Series":"S8M","Package":"Bulk","Function":"Overcurrent, Overtemperature, Overvoltage, Undervoltage","Trip Range":"0.5mA ~ 3.8A, 18.0 ~ 28.8VDC","description":"PWR MULTICIRCUIT PROTECT RS-232","Mounting Type":"DIN Rail","lifecycle_stage":"mature","Voltage - Supply":"24VDC","Termination Style":"Screw Terminal","Operating Temperature":"-10°C ~ 60°C"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$314.58 – $554.96","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/819ac7da510bfa3d2e425ccc55f60436.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What series does the S8M-CP04-RS belong to?","answer":"It belongs to the Omron S8M series of multicircuit protectors."},{"question":"What protection functions does the S8M-CP04-RS provide?","answer":"It provides overcurrent, overtemperature, overvoltage, and undervoltage protection in a single DIN-rail module."},{"question":"What is the supply voltage and trip range for the S8M-CP04-RS?","answer":"Supply voltage is 24VDC. The trip range is 0.5mA to 3.8A for current, and 18.0 to 28.8VDC for voltage."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/omron/S8M-CP04-RS","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/omron/S8M-CP04-RS 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}}