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Allen-Bradley 817-E2 MachineAlert Thermistor Monitoring Relay

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  • DescriptionAllen-Bradley 817-E RangeThermistor Protection Relays offer protective functions that are easily added and applied to motor control circuits. Typical applications include VFD Controlled Motors, Transformers, Bearings and Compressors.Monitors over temperatureConnection of up to six PTC thermistors in seriesOpen and short circuit detectionShort circuit protected signal inputStatus indication LED’sNo settings necessaryCompact...



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    Description

    Allen-Bradley 817-E Range


    Thermistor Protection Relays offer protective functions that are easily added and applied to motor control circuits. Typical applications include VFD Controlled Motors, Transformers, Bearings and Compressors.

    Monitors over temperature
    Connection of up to six PTC thermistors in series
    Open and short circuit detection
    Short circuit protected signal input
    Status indication LED’s
    No settings necessary
    Compact 22.5mm DIN rail mount housing
    Two versions available: Type E1, temperature protection, automatic reset. Type E2, temperature protection, status storage, auto, manual and remote reset options

    Approvals

    CE, cULus Listed

    Allen Bradley Temperature Monitoring Relay, DPST, 24V AC/DC to 240V AC/DC Supply Voltage - 817-E2


    This Allen Bradley temperature monitoring relay from Rockwell Automation is an electrically controlled switch that turns the power on or off in a circuit. Its two contacts operate simultaneously to prevent overtemperature, opening or closing when the temperature is within or beyond the preset threshold. The first contact supplies power to a circuit or device, while the second activates an alarm to alert you if the temperature exceeds the desired limit.

    Features and Benefits


    • Compact dimensions of 98.8 (L) x 22.5 (W) x 89mm (H) for use in tight spaces
    • Broad operating temperature range of -25°C to +60°C for use in a variety of hot and cold environments
    • Wide supply voltage range of 24 to 240V AC/DC makes it suitable for most power applications
    • Trimmer potentiometers provide a simple way to set overtemperature thresholds

    Standards and Certifications


    • CE (Conformité Européenne)
    • UL (Underwriters' Laboratories)

    How is a monitoring relay different from a normal relay?


    Monitoring relays are a type of relay that trip a circuit breaker when a fault is detected. They measure a given parameter, such as voltage or temperature, and will trip when the parameters get too high or low. A normal relay doesn't offer this protective monitoring function.

    Specifications

    Attribute Value
    Monitoring Application Temperature
    Contact Configuration DPST
    Temperature Sensitivity Overtemperature
    Series 817
    Mounting Type DIN Rail
    Operating Temperature Range +60°C
    Length 98.8mm
    Height 89mm
    Minimum Operating Temperature -25°C
    Width 22.5mm
    Dimensions 98.8 x 22.5 x 89mm
    Maximum Operating Temperature +60°C

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    Tags: Rockwell