{"product_id":"ge-239-motor-protection-relays","title":"GE 239 Motor Protection Relays","description":"\u003cp\u003eConfigured for comprehensive three-phase AC motor protection and thermal overload monitoring in industrial motor control centers, the \u003cstrong\u003eGE Multilin 239\u003c\/strong\u003e (\u003cstrong\u003e239\u003c\/strong\u003e Motor Protection System) provides direct physical\/electrical execution.\u003c\/p\u003e\n\u003ch3\u003eSuffix Breakdown \u0026amp; Model Matrix\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eModel Suffix\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eCore Function Architecture\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eArchitectural Application\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e239-base\u003c\/td\u003e\n\u003ctd\u003eStandard Motor Protection Relay\u003c\/td\u003e\n\u003ctd\u003eThree-Phase AC Motor Control Frameworks\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e239...-H\u003c\/td\u003e\n\u003ctd\u003eHarsh Environment Conformal Coating\u003c\/td\u003e\n\u003ctd\u003eCorrosive or Humid Industrial Sites\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e239...-AN\u003c\/td\u003e\n\u003ctd\u003eIsolated Analog Output Option\u003c\/td\u003e\n\u003ctd\u003eProgrammable Process Loop Transmission\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eHardware Specifications\u003c\/h3\u003e\n\u003cfigure class=\"table\"\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr\u003e\n\u003cth\u003e\u003cstrong\u003eParameter\u003c\/strong\u003e\u003c\/th\u003e\n\u003cth\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e239\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eBrand\u003c\/td\u003e\n\u003ctd\u003eGE\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOrigin\u003c\/td\u003e\n\u003ctd\u003eCanada\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e2.3 kg\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions\u003c\/td\u003e\n\u003ctd\u003e210.0 mm x 150.0 mm x 180.0 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eOperating Temp\u003c\/td\u003e\n\u003ctd\u003e-20 deg C to +60 deg C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Consumption\u003c\/td\u003e\n\u003ctd\u003e15.0 W nominal\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eControl Power Input\u003c\/td\u003e\n\u003ctd\u003e90 to 300 VDC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCommunications Protocol\u003c\/td\u003e\n\u003ctd\u003eModbus RTU\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSwitch Inputs\u003c\/td\u003e\n\u003ctd\u003eDry Contacts\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/figure\u003e\n\u003ch3\u003eProfinet \/ EtherNet\/IP Deterministic Networks and Firmware Flash Compatibility\u003c\/h3\u003e\n\u003cp\u003eThe 239 relay integrates advanced backplane communication velocity architecture to govern Modbus RTU serial exchanges across supervisory control systems. It processes high-accuracy unbalance data and thermistor feedback channels to execute unbalance accuracy within $\\pm 2\\%$, ensuring reliable trip protection under asymmetrical voltage conditions. Furthermore, internal firmware flash compatibility allows secure binary updates and thermal model parameter adjustments over communication links without requiring physical circuit board modifications.\u003c\/p\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003eQ: What is the primary function of the mechanical jam trip feature on the GE Multilin 239 relay?\u003c\/p\u003e\n\u003cp\u003eA: The mechanical jam trip feature protects driven equipment and motor shafts from catastrophic damage by detecting sudden overcurrent conditions caused by jams in applications like sawmill cutters and industrial fans.\u003c\/p\u003e\n\u003cp\u003eQ: How does the optional AN order code modify the operational capability of the 239 relay?\u003c\/p\u003e\n\u003cp\u003eA: The AN order code adds a single isolated programmable analog output with selectable milliamp ranges, enabling direct retransmission of motor operational parameters to external monitoring systems.\u003c\/p\u003e\n\u003ch3\u003eField Installation Guidelines\u003c\/h3\u003e\n\u003cp\u003eEnsure that control power is fully de-energized and locked out before wiring high-voltage AC circuits or control power inputs to the 239 relay terminal block. Route all Modbus communication cables using shielded twisted-pair wire, grounding the shield drain at a single point to prevent ground loops and electrical noise interference. Verify that panel cutout dimensions and mounting hardware are properly secured to withstand vibrational forces common in heavy motor control environments.\u003c\/p\u003e","brand":"General Electric","offers":[{"title":"Default Title","offer_id":48221154181310,"sku":"239","price":650.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0725\/1145\/5422\/files\/screenshot_2026-07-29_09-03-14_658dd24f-4563-4864-9e06-b32fc7c43d09.png?v=1785288032","url":"https:\/\/www.autooiltech.com\/products\/ge-239-motor-protection-relays","provider":"AutoOilTech Limited","version":"1.0","type":"link"}