{"product_id":"new-1pcs-bender-insulation-detector-rcm420-d-1","title":"BENDER Insulation Detector RCM420-D-1","description":"\u003ch1 style=\"font-family:Arial, Helvetica, sans-serif; color:#111111; font-size:28px; line-height:36px; margin:0 0 8px 0;\"\u003e\n  BENDER RCM420-D-1 Insulation Monitoring Device — AC\/DC Sensitive\n\u003c\/h1\u003e\n\n\u003cp style=\"font-family:Arial, Helvetica, sans-serif; color:#0056B3; font-size:14px; line-height:22px; letter-spacing:1px; text-transform:uppercase; margin:0 0 24px 0;\"\u003e\n  BENDER · RCM Series · Ground-Fault Monitor · In stock\n\u003c\/p\u003e\n\n\u003cp style=\"font-family:Arial, Helvetica, sans-serif; color:#333333; font-size:16px; line-height:26px; margin:0 0 16px 0;\"\u003e\n  The \u003cstrong\u003eRCM420-D-1\u003c\/strong\u003e is a residual-current monitor (RCM) from the German manufacturer \u003ca href=\"\/pl\/collections\/allen-bradley\" style=\"color:#0056B3; text-decoration:underline;\"\u003eBender\u003c\/a\u003e that continuously watches insulation resistance and ground-fault current on ungrounded (IT) power systems, including AC, DC, and AC\/DC mixed systems. It belongs to the \u003cstrong\u003eRCM420 series\u003c\/strong\u003e — AC\/DC-sensitive monitors commonly used in industrial, hospital, and renewable-energy installations where a clean ground reference must be guarded against leakage.\n\u003c\/p\u003e\n\n\u003cp style=\"font-family:Arial, Helvetica, sans-serif; color:#333333; font-size:16px; line-height:26px; margin:0 0 16px 0;\"\u003e\n  The \"-D-1\" variant is the panel-mount version with a digital display, configurable response value, and one Form-C alarm contact. KOEED stocks this BENDER insulation monitor for both new installation and maintenance of legacy \u003ca href=\"\/pl\/collections\/factory-automation\" style=\"color:#0056B3; text-decoration:underline;\"\u003efactory automation\u003c\/a\u003e panels where a Bender RCMA \/ RCM unit must be replaced.\n\u003c\/p\u003e\n\n\u003c!-- ============ Key Specifications ============ --\u003e\n\u003ch2 style=\"font-family:Arial, Helvetica, sans-serif; color:#111111; font-size:22px; line-height:30px; margin:32px 0 16px 0;\"\u003e\n  Key Specifications\n\u003c\/h2\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse; border:1px solid #eeeeee; font-family:Arial, Helvetica, sans-serif; font-size:14px;\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"width:40%; background-color:#f4fcfc; padding:12px 16px; border:1px solid #eeeeee; color:#111111; font-weight:bold;\"\u003eBrand\u003c\/td\u003e\n      \u003ctd style=\"background-color:#f4fcfc; padding:12px 16px; border:1px solid #eeeeee; color:#333333;\"\u003eBender (Bender GmbH \u0026amp; Co. KG)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"width:40%; background-color:#fafafa; padding:12px 16px; border:1px solid #eeeeee; color:#111111; font-weight:bold;\"\u003eSeries\u003c\/td\u003e\n      \u003ctd style=\"background-color:#fafafa; padding:12px 16px; border:1px solid #eeeeee; color:#333333;\"\u003eRCM420 (AC\/DC-sensitive residual-current monitor)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"width:40%; background-color:#f4fcfc; padding:12px 16px; border:1px solid #eeeeee; color:#111111; font-weight:bold;\"\u003ePart Number\u003c\/td\u003e\n      \u003ctd style=\"background-color:#f4fcfc; padding:12px 16px; border:1px solid #eeeeee; color:#333333;\"\u003eRCM420-D-1\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"width:40%; background-color:#fafafa; padding:12px 16px; border:1px solid #eeeeee; color:#111111; font-weight:bold;\"\u003eFunction\u003c\/td\u003e\n      \u003ctd style=\"background-color:#fafafa; padding:12px 16px; border:1px solid #eeeeee; color:#333333;\"\u003eResidual-current \/ insulation monitoring on ungrounded (IT) systems\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"width:40%; background-color:#f4fcfc; padding:12px 16px; border:1px solid #eeeeee; color:#111111; font-weight:bold;\"\u003eType of Monitoring\u003c\/td\u003e\n      \u003ctd style=\"background-color:#f4fcfc; padding:12px 16px; border:1px solid #eeeeee; color:#333333;\"\u003eAC \/ DC \/ AC + DC sensitive (Type B characteristic per IEC 60755)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"width:40%; background-color:#fafafa; padding:12px 16px; border:1px solid #eeeeee; color:#111111; font-weight:bold;\"\u003eNominal System Voltage\u003c\/td\u003e\n      \u003ctd style=\"background-color:#fafafa; padding:12px 16px; border:1px solid #eeeeee; color:#333333;\"\u003e3(N)AC 0–400 V \/ 0–500 V (system-dependent, see nameplate)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"width:40%; background-color:#f4fcfc; padding:12px 16px; border:1px solid #eeeeee; color:#111111; font-weight:bold;\"\u003eResponse Value IΔn\u003c\/td\u003e\n      \u003ctd style=\"background-color:#f4fcfc; padding:12px 16px; border:1px solid #eeeeee; color:#333333;\"\u003eAdjustable, typically 10 mA – 30 A (variant dependent)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"width:40%; background-color:#fafafa; padding:12px 16px; border:1px solid #eeeeee; color:#111111; font-weight:bold;\"\u003eDisplay\u003c\/td\u003e\n      \u003ctd style=\"background-color:#fafafa; padding:12px 16px; border:1px solid #eeeeee; color:#333333;\"\u003eIntegrated digital indicator (D-version)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"width:40%; background-color:#f4fcfc; padding:12px 16px; border:1px solid #eeeeee; color:#111111; font-weight:bold;\"\u003eAlarm Output\u003c\/td\u003e\n      \u003ctd style=\"background-color:#f4fcfc; padding:12px 16px; border:1px solid #eeeeee; color:#333333;\"\u003e1 × Form-C (SPDT) contact, configurable pre-warning \/ alarm\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"width:40%; background-color:#fafafa; padding:12px 16px; border:1px solid #eeeeee; color:#111111; font-weight:bold;\"\u003eMounting\u003c\/td\u003e\n      \u003ctd style=\"background-color:#fafafa; padding:12px 16px; border:1px solid #eeeeee; color:#333333;\"\u003ePanel \/ DIN-rail cut-out (1\/1 variant)\u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"width:40%; background-color:#f4fcfc; padding:12px 16px; border:1px solid #eeeeee; color:#111111; font-weight:bold;\"\u003eStock Status\u003c\/td\u003e\n      \u003ctd style=\"background-color:#f4fcfc; padding:12px 16px; border:1px solid #eeeeee; color:#333333;\"\u003eIn stock — quote within 24 hours at \u003ca href=\"mailto:Moritta@KOEED.COM\" style=\"color:#16c8c8; text-decoration:underline; font-weight:bold;\"\u003eMoritta@KOEED.COM\u003c\/a\u003e\n\u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003c!-- ============ Datasheet Highlights ============ --\u003e\n\u003ch2 style=\"font-family:Arial, Helvetica, sans-serif; color:#111111; font-size:22px; line-height:30px; margin:32px 0 16px 0;\"\u003e\n  Datasheet Highlights\n\u003c\/h2\u003e\n\u003cul style=\"font-family:Arial, Helvetica, sans-serif; color:#333333; font-size:15px; line-height:24px;\"\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAC\/DC sensitive Type B characteristic\u003c\/strong\u003e — detects smooth DC residual currents that classic Type A RCDs would miss, essential for variable-frequency drives and rectifier-fed DC loads.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eUngrounded (IT) system monitoring\u003c\/strong\u003e — supports the first-fault-continuity requirement of medical IT power systems and industrial isolated networks per IEC 60364-4-41.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eAdjustable response value\u003c\/strong\u003e — pre-warning and main alarm thresholds can be set independently to give a two-stage escalation.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSPDT Form-C alarm contact\u003c\/strong\u003e — directly interfaces to \u003ca href=\"\/pl\/collections\/allen-bradley\" style=\"color:#0056B3; text-decoration:underline;\"\u003ePLC discrete inputs\u003c\/a\u003e or building-management systems (BMS) for remote alerting.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003ePanel-mount form factor\u003c\/strong\u003e — the D-1 housing fits a standard cabinet cut-out and is wired to an external current-measuring CT loop on the protected conductor.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- ============ Typical Applications ============ --\u003e\n\u003ch2 style=\"font-family:Arial, Helvetica, sans-serif; color:#111111; font-size:22px; line-height:30px; margin:32px 0 16px 0;\"\u003e\n  Typical Applications\n\u003c\/h2\u003e\n\u003cul style=\"font-family:Arial, Helvetica, sans-serif; color:#333333; font-size:15px; line-height:24px;\"\u003e\n  \u003cli\u003eHospital operating-room isolated (IT) power systems and group 2 medical locations\u003c\/li\u003e\n  \u003cli\u003eIndustrial process lines with frequency inverters and DC bus loads\u003c\/li\u003e\n  \u003cli\u003eSolar PV string monitoring, battery energy storage cabinets\u003c\/li\u003e\n  \u003cli\u003eEV charging infrastructure ground-fault detection\u003c\/li\u003e\n  \u003cli\u003eRail and shipboard IT power distribution\u003c\/li\u003e\n  \u003cli\u003eReplacement of legacy Bender RCMA \/ RCM modules in existing switchgear\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- ============ Related \/ Cross-Reference ============ --\u003e\n\u003ch2 style=\"font-family:Arial, Helvetica, sans-serif; color:#111111; font-size:22px; line-height:30px; margin:32px 0 16px 0;\"\u003e\n  Related Modules \u0026amp; Cross-Reference\n\u003c\/h2\u003e\n\u003ctable style=\"width:100%; border-collapse:collapse; border:1px solid #eeeeee; font-family:Arial, Helvetica, sans-serif; font-size:14px;\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"width:40%; background-color:#f4fcfc; padding:12px 16px; border:1px solid #eeeeee; color:#111111; font-weight:bold;\"\u003eSame family (Bender RCM420)\u003c\/td\u003e\n      \u003ctd style=\"background-color:#f4fcfc; padding:12px 16px; border:1px solid #eeeeee; color:#333333;\"\u003e\n        RCM420-D-1 ·\n        \u003ca href=\"\/pl\/products\/rcm420-d-2\" style=\"color:#0056B3; text-decoration:underline;\"\u003eRCM420-D-2\u003c\/a\u003e ·\n        \u003ca href=\"\/pl\/products\/rcm420-l\" style=\"color:#0056B3; text-decoration:underline;\"\u003eRCM420-L\u003c\/a\u003e\n      \u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"width:40%; background-color:#fafafa; padding:12px 16px; border:1px solid #eeeeee; color:#111111; font-weight:bold;\"\u003eBender IR\/iso monitor\u003c\/td\u003e\n      \u003ctd style=\"background-color:#fafafa; padding:12px 16px; border:1px solid #eeeeee; color:#333333;\"\u003e\n        \u003ca href=\"\/pl\/products\/ir420\" style=\"color:#0056B3; text-decoration:underline;\"\u003eIR420-D6\u003c\/a\u003e ·\n        \u003ca href=\"\/pl\/products\/iso165c\" style=\"color:#0056B3; text-decoration:underline;\"\u003eISOMETER iso165C\u003c\/a\u003e ·\n        \u003ca href=\"\/pl\/products\/rcma423\" style=\"color:#0056B3; text-decoration:underline;\"\u003eRCMA423\u003c\/a\u003e\n      \u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"width:40%; background-color:#f4fcfc; padding:12px 16px; border:1px solid #eeeeee; color:#111111; font-weight:bold;\"\u003eExternal CT\u003c\/td\u003e\n      \u003ctd style=\"background-color:#f4fcfc; padding:12px 16px; border:1px solid #eeeeee; color:#333333;\"\u003e\n        Bender W series current transformers (W0-S20, W1-S35, W2-S70) — select by cable\/lug size\n      \u003c\/td\u003e\n    \u003c\/tr\u003e\n    \u003ctr\u003e\n      \u003ctd style=\"width:40%; background-color:#fafafa; padding:12px 16px; border:1px solid #eeeeee; color:#111111; font-weight:bold;\"\u003eBrowse related KOEED brands\u003c\/td\u003e\n      \u003ctd style=\"background-color:#fafafa; padding:12px 16px; border:1px solid #eeeeee; color:#333333;\"\u003e\n        \u003ca href=\"\/pl\/collections\/schneider\" style=\"color:#0056B3; text-decoration:underline;\"\u003eSchneider\u003c\/a\u003e ·\n        \u003ca href=\"\/pl\/collections\/siemens\" style=\"color:#0056B3; text-decoration:underline;\"\u003eSiemens\u003c\/a\u003e ·\n        \u003ca href=\"\/pl\/collections\/omron\" style=\"color:#0056B3; text-decoration:underline;\"\u003eOmron\u003c\/a\u003e ·\n        \u003ca href=\"\/pl\/collections\/allen-bradley\" style=\"color:#0056B3; text-decoration:underline;\"\u003eAllen-Bradley\u003c\/a\u003e ·\n        \u003ca href=\"\/pl\/collections\/mitsubishi\" style=\"color:#0056B3; text-decoration:underline;\"\u003eMitsubishi\u003c\/a\u003e ·\n        \u003ca href=\"\/pl\/collections\/yaskawa\" style=\"color:#0056B3; text-decoration:underline;\"\u003eYaskawa\u003c\/a\u003e ·\n        \u003ca href=\"\/pl\/collections\/panasonic\" style=\"color:#0056B3; text-decoration:underline;\"\u003ePanasonic\u003c\/a\u003e ·\n        \u003ca href=\"\/pl\/collections\/fanuc\" style=\"color:#0056B3; text-decoration:underline;\"\u003eFanuc\u003c\/a\u003e ·\n        \u003ca href=\"\/pl\/collections\/keyence\" style=\"color:#0056B3; text-decoration:underline;\"\u003eKEYENCE\u003c\/a\u003e\n      \u003c\/td\u003e\n    \u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003c!-- ============ Warranty \u0026 Authenticity ============ --\u003e\n\u003ch2 style=\"font-family:Arial, Helvetica, sans-serif; color:#111111; font-size:22px; line-height:30px; margin:32px 0 16px 0;\"\u003e\n  Warranty \u0026amp; Authenticity\n\u003c\/h2\u003e\n\u003cp style=\"font-family:Arial, Helvetica, sans-serif; color:#333333; font-size:15px; line-height:24px; margin:0 0 12px 0;\"\u003e\n  New and tested surplus Bender RCM420-D-1 units — sourced from decommissioned medical and industrial cabinets, bench-checked for response value, alarm contact continuity, and display function. Worldwide shipping with 24-hour quote turnaround on business days.\n\u003c\/p\u003e\n\n\u003c!-- ============ Main CTA ============ --\u003e\n\u003cdiv style=\"background-color:#16c8c8; padding:24px 32px; margin:32px 0; text-align:center; font-family:Arial, Helvetica, sans-serif; border-radius:4px;\"\u003e\n  \u003ch3 style=\"margin:0 0 12px 0; color:#ffffff; font-size:20px; line-height:28px;\"\u003e\n    Need this RCM420-D-1 or a Bender \/ insulation-monitor BOM?\n  \u003c\/h3\u003e\n  \u003cp style=\"margin:0 0 16px 0; color:#ffffff; font-size:15px; line-height:22px;\"\u003e\n    Send your part list to \u003cstrong\u003eMoritta@KOEED.COM\u003c\/strong\u003e and get availability + price within 24 hours.\n  \u003c\/p\u003e\n  \u003ca href=\"mailto:Moritta@KOEED.COM?subject=RFQ%20%E2%80%94%20BENDER%20RCM420-D-1\" style=\"display:inline-block; background-color:#ffffff; color:#0056B3; padding:12px 24px; text-decoration:none; font-weight:bold; border-radius:4px; font-size:15px;\"\u003e\n    Request a Quote →\n  \u003c\/a\u003e\n\u003c\/div\u003e\n\n\u003c!-- ============ Secondary CTA ============ --\u003e\n\u003cdiv style=\"border:1px solid #0056B3; padding:16px 24px; margin:16px 0; text-align:left; font-family:Arial, Helvetica, sans-serif; border-radius:4px;\"\u003e\n  \u003cp style=\"margin:0 0 8px 0; color:#111111; font-size:15px; line-height:22px;\"\u003e\n    Looking for power-quality and safety modules across the KOEED portfolio?\n  \u003c\/p\u003e\n  \u003ca href=\"\/pl\/collections\/schneider\" style=\"display:inline-block; color:#0056B3; padding:6px 18px; text-decoration:none; font-weight:bold; border:1px solid #0056B3; border-radius:4px; font-size:14px;\"\u003e\n    Browse Schneider →\n  \u003c\/a\u003e\n  \u003ca href=\"\/pl\/collections\/siemens\" style=\"display:inline-block; color:#0056B3; padding:6px 18px; text-decoration:none; font-weight:bold; border:1px solid #0056B3; border-radius:4px; font-size:14px; margin-left:8px;\"\u003e\n    Browse Siemens →\n  \u003c\/a\u003e\n\u003c\/div\u003e\n","brand":"BENDER","offers":[{"title":"Default Title","offer_id":44476114469049,"sku":"235066789238","price":3419.68,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0268\/8476\/7929\/files\/new_1pcs_BENDER_Insulation_Detector_RCM420_D_1___BENDER__1.webp?v=1774417952","url":"https:\/\/koeed.com\/pl\/products\/new-1pcs-bender-insulation-detector-rcm420-d-1","provider":"KOEED","version":"1.0","type":"link"}