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Items 1-10 of 3263

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  1. SLA230ALA
    SLA230ALA
    Diversified Electronics Protection Relays, SLA Series
    Item Number
    SLA230ALA
    MFG Item Number
    SLA230ALA
    Series
    SLA
    Product Description
    Phase Sequence/Loss Monitor, 230V,
    Specifications
    Specifications
    Number of Phases 3
    Voltage Supported 190-270 V
    Current Supported 10 A
    Lo Pwr (Under Vltg) Trip Yes
    Phase Loss Detect Yes
    Phase Rvrse/Rotatn Detect Yes
    Time Delay Trip (Sec) 0.5 s
    Manual Reset No
    Type of Display LED Status Indicator
    Mounting Plug-In
    Increase
    Decrease
    Availability
    Order by 5:00 PM ET and your package will ship the same day.
  2. H800
    H800
    Veris Industries Protection Relays, HX00 Series
    Item Number
    H800
    MFG Item Number
    H800
    Series
    HX00
    Product Description
    Current Switch, 0.25-200AAC, Split
    Specifications
    Specifications
    Aperture Size 0.7 "
    Output Signal Normally Open
    Output Rating 1 A @ 30 VAC/VDC
    LED No
    Frequency Range 50-60 Hz
    Increase
    Decrease
    Availability
    Order by 5:00 PM ET and your package will ship the same day.
  3. 201A
    201A
    Symcom Protection Relays, 201A Series
    Item Number
    201A
    MFG Item Number
    201A
    Series
    201A
    Product Description
    Motor Protector, 3Ph, 190-480VAC,
    Specifications
    Specifications
    Number of Phases 3
    Voltage Supported 190-480 V
    Current Supported 10 A
    Hi Pwr (Over Vltg) Trip Yes
    Lo Pwr (Under Vltg) Trip Yes
    Phase Loss Detect Yes
    Phase Rvrse/Rotatn Detect Yes
    Voltage Unbalance Detect Yes
    Voltage Unbalance % 6 %
    Time Delay Trip (Sec) 4 s
    Restart Delay (Sec) 2 s
    Type of Display LED Status Indicator
    Mounting Plug-In
    Increase
    Decrease
    Availability
    Order by 5:00 PM ET and your package will ship the same day.
  4. CS-425-HC-0
    CS-425-HC-0
    Greystone Energy Systems Protection Relays
    Item Number
    CS-425-HC-0
    MFG Item Number
    CS-425-HC-0
    Product Description
    Current Switch, 50AAC Max, Solid
    Specifications
    Specifications
    Power Supply Self Powered
    Aperture Size 0.8 "
    Output Signal Normally Open
    Output Rating 2.5 A @ 120 VAC
    Output Isolated Solid State Switch
    Response Time 200 ms
    LED No
    Increase
    Decrease
    Availability
    Order by 5:00 PM ET and your package will ship the same day.
  5. 460
    460
    Symcom Protection Relays
    Item Number
    460
    MFG Item Number
    460
    Product Description
    Voltage Monitor, 190-480V 3Ph,
    Specifications
    Specifications
    Number of Phases 3
    Voltage Supported 190-480 V
    Current Supported 10 A
    Hi Pwr (Over Vltg) Trip Yes
    Lo Pwr (Under Vltg) Trip Yes
    Variable Point Trip Yes
    Phase Loss Detect Yes
    Phase Rvrse/Rotatn Detect Yes
    Voltage Unbalance Detect Yes
    Voltage Unbalance % 2-8 %
    Time Delay Trip (Sec) 2-30 s
    Restart Delay (Sec) 2-300 s
    Rapid Cycling Detect Yes
    Var Restart Delay Yes
    Manual Reset Yes
    Type of Display LED Status Indicator
    Increase
    Decrease
    Availability
    Order by 5:00 PM ET and your package will ship the same day.
  6. 70170-D
    70170-D
    Macromatic Protection Relays
    Item Number
    70170-D
    MFG Item Number
    70170-D
    Product Description
    Socket, 11-Pin Circular, 10A/300V
    Increase
    Decrease
    Availability
    Order by 5:00 PM ET and your package will ship the same day.
  7. SLA230ASA
    SLA230ASA
    Diversified Electronics Protection Relays, SLA Series
    Item Number
    SLA230ASA
    MFG Item Number
    SLA230ASA
    Series
    SLA
    Product Description
    Phase Sequence/Loss Monitor, 230V,
    Specifications
    Specifications
    Number of Phases 3
    Voltage Supported 190-270 V
    Current Supported 10 A
    Lo Pwr (Under Vltg) Trip Yes
    Phase Loss Detect Yes
    Phase Rvrse/Rotatn Detect Yes
    Time Delay Trip (Sec) 0.5 s
    Manual Reset No
    Type of Display LED Status Indicator
    Mounting Plug-In
    Increase
    Decrease
    Availability
    Order by 5:00 PM ET and your package will ship the same day.
  8. SLA230ALE
    SLA230ALE
    Diversified Electronics Protection Relays, SLA Series
    Item Number
    SLA230ALE
    MFG Item Number
    SLA230ALE
    Series
    SLA
    Product Description
    Phase Sequence/Loss Monitor, 230V,
    Specifications
    Specifications
    Number of Phases 3
    Voltage Supported 190-270 V
    Current Supported 5 A
    Lo Pwr (Under Vltg) Trip Yes
    Phase Loss Detect Yes
    Phase Rvrse/Rotatn Detect Yes
    Time Delay Trip (Sec) 0.5 s
    Manual Reset No
    Type of Display LED Status Indicator
    Mounting Surface
    Increase
    Decrease
    Availability
    Order by 5:00 PM ET and your package will ship the same day.
  9. 202
    202
    Symcom Protection Relays
    Item Number
    202
    MFG Item Number
    202
    Product Description
    Voltage Monitor, 190-480V 3-Ph,
    Specifications
    Specifications
    Number of Phases 3
    Voltage Supported 190-480 V
    Current Supported 10 A
    Hi Pwr (Over Vltg) Trip Yes
    Lo Pwr (Under Vltg) Trip Yes
    Phase Loss Detect Yes
    Phase Rvrse/Rotatn Detect Yes
    Voltage Unbalance Detect Yes
    Voltage Unbalance % 6 %
    Time Delay Trip (Sec) 4 s
    Restart Delay (Sec) 2-300 s
    Type of Display LED Status Indicator
    Increase
    Decrease
    Availability
    Order by 5:00 PM ET and your package will ship the same day.
  10. H300
    H300
    Veris Industries Protection Relays, HX00 Series
    Item Number
    H300
    MFG Item Number
    H300
    Series
    HX00
    Product Description
    Current Switch, 0.15-60AAC, N/O Out,
    Specifications
    Specifications
    Output Signal Normally Open
    Output Rating 1 A @ 30 VAC/VDC
    LED No
    Frequency Range 50-60 Hz
    Increase
    Decrease
    Availability
    Order by 5:00 PM ET and your package will ship the same day.
Page
per page

Protection Relays

Protection relays are electronic components designed to prevent unnecessary trips, isolate faults and protect motors, breakers, and other equipment.

Modern protective relays are microprocessor-based, and use inputs and settings to intelligently compare measurements to setpoints and produce a desired output. Inputs can include variables like current, voltage, resistance and temperature. If any of those values exceed a prescribed setpoint, the relay can trigger an output like an alarm, an indicating light, a network communication, and even turn another device on or off.

Because modern protection relays use digital technology to operate, they can produce quick, reliable, repeatable outputs far more frequently over a longer lifetime. They also provide better accuracy to eliminate nuisance trips, reduced maintenance needs to improve uptime, and better efficiency to cut costs and save panel space.

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