{"title":"250\/250A","description":"","products":[{"product_id":"littelfuse-250a-three-phase-voltage-monitor","title":"Littelfuse 250A Three-Phase Voltage Monitor","description":"\u003cp\u003e\n\u003cimg data-image=\"7o844fqdks2q\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0857\/5552\/7485\/files\/littelfuse1_logo.jpg\" title=\"Littelfuse your electronic and control \u0026amp; protection specialists\"\u003e\n\u003c\/p\u003e\n\u003ch3\u003e\nLittelfuse 250A Voltage Monitor Product Description\u003c\/h3\u003e\n\u003cp\u003e\n\tModel 250A is an auto ranging voltage monitor designed to protect 3-phase\n    motors regardless of size. It is used on 190-480VAC, 50 to 60 Hz motors to\n    protect the motors from damage caused by single phasing, low voltage, phase\n    reversal, voltage unbalance, and also high voltage. Added features include\n    the DPDT contacts that are used to perform two functions when parameters\n    are exceeded in addition to the standard adjustable restart delay.\n\u003c\/p\u003e\n\u003ch3\u003e\nLittelfuse 250A Voltage Monitor Typical Applications\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFans\n\t\u003c\/li\u003e\n\u003cli\u003eCompressors\n\t\u003c\/li\u003e\n\u003cli\u003eAir Conditioners\n\t\u003c\/li\u003e\n\u003cli\u003eHeat Pumps\n\t\u003c\/li\u003e\n\u003cli\u003eWell Pumps\n\t\u003c\/li\u003e\n\u003cli\u003eSump Pumps\n\t\u003c\/li\u003e\n\u003cli\u003eSmall Conveyor Motors\n\t\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\nLittelfuse 250A Voltage Monitor Features\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eProtects Motor From:\u003cul\u003e\n\u003cli\u003ePhase Loss (single phasing)\n\t\t\u003c\/li\u003e\n\u003cli\u003ePhase Reversal\n\t\t\u003c\/li\u003e\n\u003cli\u003eLow Voltage\n\t\t\u003c\/li\u003e\n\u003cli\u003eHigh Voltage\n\t\t\u003c\/li\u003e\n\u003cli\u003eVoltage Unbalance\n\t\t\u003c\/li\u003e\n\u003cli\u003ePhase Reversal\n\t\t\u003c\/li\u003e\n\u003cli\u003eRapid Cycling\n\t\t\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eAdjustable Restart Delay can be set at Manual Position or Anywhere\n    Between 2-300 Seconds.\n\t\u003c\/li\u003e\n\u003cli\u003eUniversal Range from 190-480 VAC 50\/60 Hz Provides the Versatility\n    Needed to Handle Global Applications.\n\t\u003c\/li\u003e\n\u003cli\u003eBicolor LED Indicator Light is Green in Normal Conditions and Red\n    During Trip Conditions.\n\t\u003c\/li\u003e\n\u003cli\u003eMicrocontroller Based Provides Better Accuracy and Higher Reliability\n    than Analog Designs.\n\t\u003c\/li\u003e\n\u003cli\u003eTransient Protected to Meet IEC 1000-4-5:1995 Standards and Stand up\n    Under Tougher Conditions.\n\t\u003c\/li\u003e\n\u003cli\u003eDPDT Relay Provides Two 10A @ 240 VAC General Purpose Relays to Switch\n    Heavier Loads.\n\t\u003c\/li\u003e\n\u003cli\u003eWill Detect Single Phase Condition Regardless of Regenerated Voltages.\n\t\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Littelfuse\/Symcom","offers":[{"title":"Default Title","offer_id":49325032046909,"sku":"MSR250A","price":268.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0857\/5552\/7485\/files\/msr250x_001_wbg.jpg?v=1725420056"},{"product_id":"littelfuse-250-600-three-phase-voltage-monitor","title":"Littelfuse 250-600 Three-Phase Voltage Monitor","description":"\u003cp\u003e\n\u003cimg data-image=\"7o844fqdks2q\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0857\/5552\/7485\/files\/littelfuse1_logo.jpg\" title=\"Littelfuse your electronic and control \u0026amp; protection specialists\"\u003e\n\u003c\/p\u003e\n\u003ch3\u003e\nLittelfuse 250-600 Voltage Monitor Product Description\u003c\/h3\u003e\n\u003cp\u003e\n\tModel 250-600 is an auto ranging voltage monitor designed to protect\n    3-phase motors regardless of size. It is used on 500-600VAC, 50 to 60 Hz\n    motors to protect the motors from damage caused by single phasing, low\n    voltage, phase reversal, voltage unbalance, and also high voltage. Added\n    features include the DPDT contacts that are used to perform two functions\n    when parameters are exceeded in addition to the standard adjustable restart\n    delay.\n\u003c\/p\u003e\n\u003ch3\u003e\nLittelfuse 250-600 Voltage Monitor Typical Applications\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFans\n\t\u003c\/li\u003e\n\u003cli\u003eCompressors\n\t\u003c\/li\u003e\n\u003cli\u003eAir Conditioners\n\t\u003c\/li\u003e\n\u003cli\u003eHeat Pumps\n\t\u003c\/li\u003e\n\u003cli\u003eWell Pumps\n\t\u003c\/li\u003e\n\u003cli\u003eSump Pumps\n\t\u003c\/li\u003e\n\u003cli\u003eSmall Conveyor Motors\n\t\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\nLittelfuse 250-600 Voltage Monitor Features\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eProtects Motor From:\u003cul\u003e\n\u003cli\u003ePhase Loss (single phasing)\n\t\t\u003c\/li\u003e\n\u003cli\u003ePhase Reversal\n\t\t\u003c\/li\u003e\n\u003cli\u003eLow Voltage\n\t\t\u003c\/li\u003e\n\u003cli\u003eHigh Voltage\n\t\t\u003c\/li\u003e\n\u003cli\u003eVoltage Unbalance\n\t\t\u003c\/li\u003e\n\u003cli\u003ePhase Reversal\n\t\t\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eAdjustable Restart Delay can be set at Manual Position or Anywhere\n    Between 2-300 Seconds.\n\t\u003c\/li\u003e\n\u003cli\u003eUniversal Range from 190-480 VAC 50\/60 Hz Provides the Versatility\n    Needed to Handle Global Applications.\n\t\u003c\/li\u003e\n\u003cli\u003eBicolor LED Indicator Light is Green in Normal Conditions and Red\n    During Trip Conditions.\n\t\u003c\/li\u003e\n\u003cli\u003eMicrocontroller Based Provides Better Accuracy and Higher Reliability\n    than Analog Designs.\n\t\u003c\/li\u003e\n\u003cli\u003eTransient Protected to Meet IEC 1000-4-5:1995 Standards and Stand up\n    Under Tougher Conditions.\n\t\u003c\/li\u003e\n\u003cli\u003eDPDT Relay Provides two 10A @ 240 VAC General Purpose Relays to Switch\n    Heavier Loads.\n\t\u003c\/li\u003e\n\u003cli\u003eWill Detect Single Phase Condition Regardless of Regenerated Voltages.\n\t\u003c\/li\u003e\n\u003cli\u003eDPDT Contacts\n\t\u003c\/li\u003e\n\u003cli\u003eAdjustable Restart Delay\n\t\u003c\/li\u003e\n\u003cli\u003eDiagnostic LED\n\t\u003c\/li\u003e\n\u003cli\u003eUL Listed\n\t\u003c\/li\u003e\n\u003cli\u003eCSA Approved\n\t\u003c\/li\u003e\n\u003cli\u003e5-Year Warranty\n\t\u003c\/li\u003e\n\u003cli\u003eMade in USA\n\t\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Littelfuse\/Symcom","offers":[{"title":"Default Title","offer_id":49325032276285,"sku":"MSR250-600","price":268.69,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0857\/5552\/7485\/files\/msr250x_001_wbg_b093b4f5-19aa-4ecd-964c-e570e6d64223.jpg?v=1725420064"},{"product_id":"littelfuse-250-100-met-replaces-metron-100-model-250-100-right-form-c-relay","title":"Littelfuse 250-100-MET (Replaces METRON-100) Model 250-100\/Right Form C Relay","description":"\u003cp\u003e\n\u003cimg data-image=\"7o844fqdks2q\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0857\/5552\/7485\/files\/littelfuse1_logo.jpg\" title=\"Littelfuse your electronic and control \u0026amp; protection specialists\"\u003e\n\u003c\/p\u003e\n\u003ch3\u003e\nLittelfuse 250-100-MET Description: (Replaces METRON-100)\u003c\/h3\u003e\n\u003cp\u003eModel 250-100-MET is a voltage monitor designed to protect 3-phase motors regardless of size. It is used on 95-120VAC, 50\/60Hz motors to protect the motors from damage caused by low voltage, voltage unbalance, single-phasing and reverse phasing.\n\u003c\/p\u003e\n\u003ch3\u003e\nLittelfuse 250-100-MET Voltage Monitor Typical Applications\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eFans\n\t\u003c\/li\u003e\n\u003cli\u003eCompressors\n\t\u003c\/li\u003e\n\u003cli\u003eAir Conditioners\n\t\u003c\/li\u003e\n\u003cli\u003eHeat Pumps\n\t\u003c\/li\u003e\n\u003cli\u003eWell Pumps\n\t\u003c\/li\u003e\n\u003cli\u003eSump Pumps\n\t\u003c\/li\u003e\n\u003cli\u003eSmall Conveyor Motors\n\t\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\nLittelfuse 250-100-MET Voltage Monitor Features\n\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eProtects 3-Phase Motors From:\u003c\/li\u003e\n\u003cul\u003e\n\u003cli\u003ePhase Loss (Single Phasing)\n\t\t\u003c\/li\u003e\n\u003cli\u003ePhase Reversal\n\t\t\u003c\/li\u003e\n\u003cli\u003eLow Voltage\n\t\t\u003c\/li\u003e\n\u003cli\u003eVoltage Unbalance\n\t\t\u003c\/li\u003e\n\u003cli\u003ePhase Reversal\n\t\t\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cli\u003eUniversal Range From 95-120 VAC 50\/60 Hz Provides the Versatility\n    Needed to Handle Global Applications.\n\t\u003c\/li\u003e\n\u003cli\u003eTwo Form C Relays\n\t\u003c\/li\u003e\n\u003cli\u003eMicrocontroller Based Provides Better Accuracy and Higher Reliability\n    than Analog Designs.\n\t\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Littelfuse\/Symcom","offers":[{"title":"Default Title","offer_id":49325308117309,"sku":"MSR250-100-MET","price":258.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0857\/5552\/7485\/files\/msr250x_001_wbg_15cb59ed-89ae-4b72-9749-a431ee049931.jpg?v=1725427090"},{"product_id":"littelfuse-250a-met-three-phase-voltage-monitor-replaces-meta","title":"Littelfuse 250A-MET Three-Phase Voltage Monitor (Replaces META)","description":"\u003cp\u003e\n\u003cimg data-image=\"7o844fqdks2q\" src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0857\/5552\/7485\/files\/littelfuse1_logo.jpg\" title=\"Littelfuse your electronic and control \u0026amp; protection specialists\"\u003e\n\u003c\/p\u003e\n\u003ch3\u003e\nLittelfuse 250A-MET Voltage Monitor Product Description (Replaces META)\u003c\/h3\u003e\n\u003cdiv\u003eModel 250A-MET is an auto ranging voltage monitor designed to protect 3-phase motors regardless of size. It is used on 190-480VAC, 50\/60Hz motors to protect the motors from damage caused by low voltage, voltage unbalance, single phasing and reverse phasing.\n\u003c\/div\u003e\n\u003cdiv\u003eA unique microcontroller-based voltage and phase sensing circuit constantly monitors the three phase voltages to detect harmful power line conditions. When a harmful condition is detected, the MotorSaver’s output relay is deactivated after a specified trip delay. The output relay reactivates after power line conditions return to an acceptable level for a specified amount of time (restart delay), unless the unit is in the manual reset mode. The trip delay prevents nuisance tripping due to rapidly fluctuating power line conditions.\n\u003c\/div\u003e\n\u003cdiv\u003eThe 250A-MET has two Form C relays that operate independently of each other. The left-hand relay will energize when voltage conditions are good and de-energize when a fault condition is detected. The right-hand relay will only energize during a reverse-phase condition.\n\u003c\/div\u003e\n\u003ch3\u003e\nLittelfuse 250A-MET Voltage Monitor Typical Applications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThis Unit was Designed for Use in Applications with Fire Control Panels, but may be used Anywhere These Features are Required.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003e\nLittelfuse 250A-MET Voltage Monitor Features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eProtects Motor From:\u003cul\u003e\n\u003cli\u003ePhase Loss (single phasing)\n\t\t\u003c\/li\u003e\n\u003cli\u003ePhase Reversal\n\t\t\u003c\/li\u003e\n\u003cli\u003eLow Voltage\u003c\/li\u003e\n\u003cli\u003eVoltage Unbalance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eUniversal Range from 95-120 VAC 50\/60 Hz Provides the Versatility Needed to Handle Global Applications.\u003c\/li\u003e\n\u003cli\u003eTwo Form C Relays\u003c\/li\u003e\n\u003cli\u003eMicrocontroller Based Provides Better Accuracy and Higher Reliability than Analog Designs.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Littelfuse\/Symcom","offers":[{"title":"Default Title","offer_id":49327580512573,"sku":"MSR250AMET","price":258.39,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0857\/5552\/7485\/files\/msr250x_001_wbg_8e2bfb2a-57dc-48bf-9889-3ab9c44e4a39.jpg?v=1725453056"}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0857\/5552\/7485\/collections\/msr250x_001_wbg.jpg?v=1727896116","url":"https:\/\/rcworst.com\/collections\/250-250a.oembed","provider":"R.C. Worst \u0026 Company Inc","version":"1.0","type":"link"}