{"product_id":"limit-switch-20-5-1-series-55-gear-ratio-with-4-contact-blocks-hubbell-55-4e-4sp-wr-20","title":"Limit Switch - 20.5:1 Series 55 Gear Ratio With 4 Contact Blocks Hubbell 55-4E-4SP-WR-20","description":"\u003cstrong data-mce-fragment=\"1\"\u003eAlso Known As :\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eA limit switch is a type of electromechanical device that operates when its actuator reaches a preset position, thereby either opening or closing an electrical connection. It's used in various applications to detect the presence or position of an object.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eAbout :\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eLimit the travel of electrically operated doors, conveyors, hoists, machine tool work tables and similar devices. Equipment having rotating mechanisms, or linear motion which can be translated into rotational motion, can be controlled by these versatile switches. Furnas Series 55 switches can be mounted in any position and are easy to wire and adjust.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eCommon Applications: :\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e• Used in electrical circuits to control the operation of machinery.\u003cbr data-mce-fragment=\"1\"\u003e• Can be found in various configurations to suit different applications, including emergency stops, limit switches, and more.\u003cbr data-mce-fragment=\"1\"\u003e• This refers to a mechanical advantage or speed reduction. For every 20.5 rotations of the input gear (often called the pinion), the output gear (often called the driven gear or wheel) rotates once. This type of setup provides significant torque multiplication but reduces the speed of the output shaft compared to the input shaft.\u003cbr\u003e\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eStandards:\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e• This suggests an electrical component, possibly in a switch or relay. Contact blocks are units in a switch that, when activated, either make or break electrical circuits. In industrial switches, you can often add multiple contact blocks to achieve multiple simultaneous circuit actions with a single switch activation.\u003cbr data-mce-fragment=\"1\"\u003e• The contact blocks are triggered at specified positions or conditions to send electrical signals, initiating actions like stopping the machine, changing direction, or other control functions.\u003cbr data-mce-fragment=\"1\"\u003e• Ensure that the gear system and contact blocks are made of durable materials, especially for heavy-duty or industrial applications.\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eConstruction :\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e• Consists of springs, levers, and other components that transfer the motion of the actuator to the contacts.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e• Made of materials that offer durability and reliability over many operating cycles\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e• Options to mount the limit switch in place, which could include flanges, brackets, or holes for screws\/bolts.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e• These are the points where the switch connects to the electrical circuit. They can be screw terminals, quick connect terminals, or cable glands.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eSpecification :\u003cbr\u003e\u003c\/strong\u003e\n\u003cdiv class=\"MuiTableContainer-root\" data-mce-fragment=\"1\" bis_skin_checked=\"1\"\u003e\n\u003ctable class=\"MuiTable-root\" aria-label=\"a dense table\" data-mce-fragment=\"1\"\u003e\n\u003ctbody data-mce-fragment=\"1\"\u003e\n\u003ctr class=\"MuiTableRow-root\" data-mce-fragment=\"1\"\u003e\n\u003ctd class=\"MuiTableCell-root tableHead MuiTableCell-alignLeft MuiTableCell-sizeSmall\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eWidth\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"MuiTableCell-root tableVal MuiTableCell-alignLeft MuiTableCell-sizeSmall\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e5-1\/3 in\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"MuiTableRow-root\" data-mce-fragment=\"1\"\u003e\n\u003ctd class=\"MuiTableCell-root tableHead MuiTableCell-alignLeft MuiTableCell-sizeSmall\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eDepth\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"MuiTableCell-root tableVal MuiTableCell-alignLeft MuiTableCell-sizeSmall\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e5-1\/3 in\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"MuiTableContainer-root\" data-mce-fragment=\"1\" bis_skin_checked=\"1\"\u003e\n\u003ctable class=\"MuiTable-root\" aria-label=\"a dense table\" data-mce-fragment=\"1\"\u003e\n\u003ctbody data-mce-fragment=\"1\"\u003e\n\u003ctr class=\"MuiTableRow-root\" data-mce-fragment=\"1\"\u003e\n\u003ctd class=\"MuiTableCell-root tableHead MuiTableCell-alignLeft MuiTableCell-sizeSmall\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eHeight\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"MuiTableCell-root tableVal MuiTableCell-alignLeft MuiTableCell-sizeSmall\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e3-1\/3 in\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"MuiTableRow-root\" data-mce-fragment=\"1\"\u003e\n\u003ctd class=\"MuiTableCell-root tableHead MuiTableCell-alignLeft MuiTableCell-sizeSmall\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eGear Ratio\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"MuiTableCell-root tableVal MuiTableCell-alignLeft MuiTableCell-sizeSmall\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e20.5:1\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"MuiTableContainer-root\" data-mce-fragment=\"1\" bis_skin_checked=\"1\"\u003e\n\u003ctable class=\"MuiTable-root\" aria-label=\"a dense table\" data-mce-fragment=\"1\"\u003e\n\u003ctbody data-mce-fragment=\"1\"\u003e\n\u003ctr class=\"MuiTableRow-root\" data-mce-fragment=\"1\"\u003e\n\u003ctd class=\"MuiTableCell-root tableHead MuiTableCell-alignLeft MuiTableCell-sizeSmall\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eolor\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"MuiTableCell-root tableVal MuiTableCell-alignLeft MuiTableCell-sizeSmall\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eGray\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"MuiTableRow-root\" data-mce-fragment=\"1\"\u003e\n\u003ctd class=\"MuiTableCell-root tableHead MuiTableCell-alignLeft MuiTableCell-sizeSmall\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eSupport Type\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"MuiTableCell-root tableVal MuiTableCell-alignLeft MuiTableCell-sizeSmall\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eBase Mount\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"MuiTableRow-root\" data-mce-fragment=\"1\"\u003e\n\u003ctd class=\"MuiTableCell-root tableHead MuiTableCell-alignLeft MuiTableCell-sizeSmall\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eCapacity\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"MuiTableCell-root tableVal MuiTableCell-alignLeft MuiTableCell-sizeSmall\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e15 Amps.\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"MuiTableRow-root\" data-mce-fragment=\"1\"\u003e\n\u003ctd class=\"MuiTableCell-root tableHead MuiTableCell-alignLeft MuiTableCell-sizeSmall\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eNumber of Shelves\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"MuiTableCell-root tableVal MuiTableCell-alignLeft MuiTableCell-sizeSmall\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eEach\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"MuiTableRow-root\" data-mce-fragment=\"1\"\u003e\n\u003ctd class=\"MuiTableCell-root tableHead MuiTableCell-alignLeft MuiTableCell-sizeSmall\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eMaterial\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"MuiTableCell-root tableVal MuiTableCell-alignLeft MuiTableCell-sizeSmall\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eDie-cast Aluminum\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"MuiTableContainer-root\" data-mce-fragment=\"1\" bis_skin_checked=\"1\"\u003e\n\u003ctable class=\"MuiTable-root\" aria-label=\"a dense table\" data-mce-fragment=\"1\"\u003e\n\u003ctbody data-mce-fragment=\"1\"\u003e\n\u003ctr class=\"MuiTableRow-root\" data-mce-fragment=\"1\"\u003e\n\u003ctd class=\"MuiTableCell-root tableHead MuiTableCell-alignLeft MuiTableCell-sizeSmall\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003ePackage Quantity\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"MuiTableCell-root tableVal MuiTableCell-alignLeft MuiTableCell-sizeSmall\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e1\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"MuiTableRow-root\" data-mce-fragment=\"1\"\u003e\n\u003ctd class=\"MuiTableCell-root tableHead MuiTableCell-alignLeft MuiTableCell-sizeSmall\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eManufacturers Part Number\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"MuiTableCell-root tableVal MuiTableCell-alignLeft MuiTableCell-sizeSmall\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e55-4E-4SP-WR-20\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"MuiTableRow-root\" data-mce-fragment=\"1\"\u003e\n\u003ctd class=\"MuiTableCell-root tableHead MuiTableCell-alignLeft MuiTableCell-sizeSmall\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eNormally Closed\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"MuiTableCell-root tableVal MuiTableCell-alignLeft MuiTableCell-sizeSmall\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e4\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"MuiTableRow-root\" data-mce-fragment=\"1\"\u003e\n\u003ctd class=\"MuiTableCell-root tableHead MuiTableCell-alignLeft MuiTableCell-sizeSmall\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eNormally Open\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"MuiTableCell-root tableVal MuiTableCell-alignLeft MuiTableCell-sizeSmall\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e4\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"MuiTableRow-root\" data-mce-fragment=\"1\"\u003e\n\u003ctd class=\"MuiTableCell-root tableHead MuiTableCell-alignLeft MuiTableCell-sizeSmall\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eBrand\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd class=\"MuiTableCell-root tableVal MuiTableCell-alignLeft MuiTableCell-sizeSmall\" data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003eHubbell\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"MuiTableContainer-root\" bis_skin_checked=\"1\" data-mce-fragment=\"1\"\u003e\u003cbr\u003e\u003c\/div\u003e\n\u003cstrong data-mce-fragment=\"1\"\u003eFeatures :\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eIndustrial Machinery:\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e• To detect the presence or position of objects or parts.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eSafety Interlocks:\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e• To ensure that dangerous machinery is powered down when access doors are opened.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003ePosition Detection:\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e• In elevators, doors, gates, etc., to detect the open or closed position.\u003cbr data-mce-fragment=\"1\"\u003e\u003c\/span\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eInstallation:\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e• The switches should be installed according to the manufacturer's specifications and guidelines, considering the environmental and operational conditions.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eMaintenance:\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e• Regular maintenance checks to ensure that the switch is operating effectively and safely. It may include cleaning, inspection, and testing.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e\u003cspan data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eVoltage and Current:\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e• Indicates the maximum voltage and current that the switch is rated for. Exceeding these ratings can cause failure or unsafe conditions.\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eSlow Speed:\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e• The output shaft turns at a much slower speed compared to the input shaft.\u003cbr data-mce-fragment=\"1\"\u003e\u003cstrong data-mce-fragment=\"1\"\u003eIncreased Torque:\u003c\/strong\u003e\u003cbr data-mce-fragment=\"1\"\u003e• There is an increase in torque at the output, making it suitable for applications requiring substantial force.\u003c\/span\u003e\u003cbr data-mce-fragment=\"1\"\u003e","brand":"Global Industrial","offers":[{"title":"Default Title","offer_id":44039280328858,"sku":"55-4E-4SP-WR-20","price":1130.22,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0213\/7895\/7412\/files\/24_cf4861f9-c21d-4afc-b641-b84669954b95.png?v=1762982981","url":"https:\/\/nassaunationalcable.com\/en-ca\/products\/limit-switch-20-5-1-series-55-gear-ratio-with-4-contact-blocks-hubbell-55-4e-4sp-wr-20","provider":"NassauNationalCable","version":"1.0","type":"link"}