{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"RUMC3AB1GD","brand":"Schneider Electric","brandSlug":"schneider","productSlug":"RUMC3AB1GD","canonicalUrl":"https://aoctrl.com/schneider/RUMC3AB1GD","factsUrl":"https://aoctrl.com/api/mcp/products/RUMC3AB1GD","rawCanonicalId":null},"summary":{"shortDescription":"Schneider Electric Harmony Relay series, Universal, plug-in relay RUMC3AB1GD, 125 VDC coil, 3 C/O contacts, 10 A rated operational current, without status LED.","salesMarkdown":"## RUMC3AB1GD — 125 VDC Ice Cube Relay, 3 C/O, Current Production The 125 V DC coil (control circuit voltage) operates within a 100…137.5 V DC range, with a drop-out threshold at ≥ 0.1 Uc DC. Coil resistance is 10000 Ohm at 20 °C ± 10 %. Contact configuration is 3 C/O (three changeover poles) with AgNi material. Rated operational current is 10 A AC-1/DC-1 for normally-open contacts per IEC, with UL ratings of 12 A at 28 V DC-1 and 16 A at 277 V AC-1. Maximum switching capacity is 2500 VA AC / 280 W DC. The lockable test button allows manual actuation for commissioning checks without energizing the coil — useful during panel checkout. No status LED is fitted, so coil state verification relies on the test button or external indication. ## Standards and Compliance for Panel Integration Design certified to EN/IEC 61810-1 (electromechanical elementary relays), UL 508 (industrial control equipment), and CSA C22.2 No 14. These standards cover the relay's use in control panels and industrial machinery — the UL/CSA marks are what panel builders and UL 508A shops look for on the component label. Rated insulation voltage (Ui) is 250 V IEC, 300 V CSA/UL. Impulse withstand voltage (Uimp) is 4 kV, and dielectric strength is 1500 V AC between contacts, 1550 V AC between coil and contact, and 1550 V AC between poles. Protection category RT I indicates the relay is not sealed against flux or washdown; it belongs inside a cabinet, not in a wet area. ## Durability and Application Limits Electrical durability is 100,000 cycles under resistive load; mechanical durability is 5,000,000 cycles. The utilisation coefficient of 20 % means the relay is rated for a 20 % on-time duty cycle under load — continuous energization without switching is fine, but repetitive switching at full load should stay within this duty factor. Minimum switching requirements: 10 mA at 17 V, with a minimum switching capacity of 170 mW. Below these thresholds, the AgNi contacts may not reliably wet — avoid dry-circuit applications (e.g., logic-level signals below 17 V or 10 mA). Operating rate is ≤ 1200 cycles/hour under load, with an operating time of 20 ms. Ambient temperature range for operation is -40…55 °C; storage range extends to 85 °C. Vibration resistance is 3 gn (operating) and 4 gn (non-operating) per EN/IEC 60068-2-27; shock resistance is 10 gn in both states. Safety reliability data: B10d = 100,000 cycles — the number of operations until 10 % of a population fails dangerously. This matters for safety-related control circuits where the relay is part of a fault-exclusion or redundancy scheme. For contract-manufacturing buyers: this part is on the standard Schneider Electric Harmony Relay portfolio. If your customer's approved vendor list (AVL) specifies Schneider or a specific AML line item, this order code matches. No deviation needed for the 125 V DC coil variant.","metaTitle":"Schneider Electric RUMC3AB1GD Harmony Relay, 125 VDC 3 C/O,","metaDescription":"Schneider Electric RUMC3AB1GD plug-in relay, 125 VDC coil, 3 C/O contacts rated 10 A AC-1. Current lifecycle stage. Sourced to order against RFQ. Standards: EN/IEC 61810-1, UL 508,","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Obsolete","categoryPath":[],"specifications":{"title":"RUMC3AB1GD","Category":"21127-ZELIO ICE CUBE RELAYS","Standards":"EN/IEC 61810-1 UL 508 CSA C22.2 No 14","Status LED":"Without","Series name":"Universal","description":"Schneider RUMC3AB1GD Relays & Sockets — now discontinued, supplied from remaining surplus and broker stock.","Control Type":"Lockable test button","Shape of pin":"Cylindrical","Operating rate":"<= 1200 cycles/hour under load","Operating time":"20 ms","lifecycle_stage":"current","Pollution degree":"3","Range of Product":"Harmony Relay","Shock resistance":"10 gnin operation 10 gnnot operating","Contacts material":"AgNi","Device short name":"RUM","Average resistance":"10000 Ohm 20 °C +/- 10 %","Compatibility code":"RUM","Operating position":"Any position","Dielectric strength":"1500 V AC between contacts 1550 V AC between coil and contact 1550 V AC between poles","Protection category":"RT I","Vibration resistance":"3 gn +/- 1 mm 10...150 Hz)10 cycles in operation EN/IEC 60068-2-27 4 gn +/- 1 mm 10...150 Hz)10 cycles not operating EN/IEC 60068-2-27","Electrical durability":"100000 cycles resistive","Mechanical durability":"5000000 cycles","IP degree of protection":"IP40 conforming to EN/IEC 60529","Safety reliability data":"B10d = 100000","Utilisation coefficient":"20 %","Maximum switching voltage":"250 V AC IEC 250 V DC IEC","Minimum Switching Current":"10 mA","Minimum switching voltage":"17 V","Product or Component Type":"Plug-in relay","Drop-out voltage threshold":">= 0.1 Uc DC","Maximum switching capacity":"2500 VA AC 280 W DC","Minimum switching capacity":"170 mW","[Uc] control circuit voltage":"125 V DC","Contacts type and composition":"3 C/O","[Ui] rated insulation voltage":"250 V IEC 300 V CSA 300 V UL","[Ie] rated operational current":"10 A AC-1/DC-1 (NO) conforming to IEC 12 A at 28 V DC-1 conforming to UL 16 A at 277 V AC-1 conforming to UL 5 A AC-1/DC-1 (NC) conforming to IEC","Rated operational voltage limits":"100...137.5 V DC","Ambient Air Temperature for Storage":"-40...185 °F (-40...85 °C)","Ambient air temperature for operation":"-40...131 °F (-40...55 °C)","[Uimp] rated impulse withstand voltage":"4 kV","[Ithe] conventional enclosed thermal current":"10 A -40...131 °F (-40...55 °C)"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$5.54","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/d9e55cc715f2876102c3c11d354e8dd6.pdf","sourceUrl":"https://www.se.com/us/en/product/RUMC3AB1GD/universal-plugin-relay-harmony-rum-3-c-o-125-v-dc-10-a/","alternativesUrl":"https://aoctrl.com/api/mcp/products/RUMC3AB1GD/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy RUMC3AB1GD and what is the lead time?","answer":"The RUMC3AB1GD 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 lead time and price."},{"question":"What is the closest pin-compatible alternative to RUMC3AB1GD?","answer":"Within the Harmony Relay RUM family, other coil voltage variants (e.g., 24 V DC, 48 V DC, 110 V DC, 230 V AC) share the same 3 C/O contact arrangement, cylindrical pin shape, and plug-in base footprint. The deciding factor for substitution is the coil voltage — the RUMC3AB1GD is the 125 V DC variant. No direct pin-compatible cross exists outside the RUM series without changing the socket."},{"question":"What compliance documentation does Schneider provide for RUMC3AB1GD?","answer":"The relay is certified to EN/IEC 61810-1, UL 508, and CSA C22.2 No 14. These standards cover the safety and performance requirements for industrial control relays. RoHS and REACH compliance documentation is typically available from Schneider Electric's product compliance portal using the order code RUMC3AB1GD."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/schneider/RUMC3AB1GD","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/schneider/RUMC3AB1GD when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:21:01.794Z","lastPublished":"2026-09-02T08:21:01.794Z","indexable":true}}