MP8000 Bluetooth Overload Relay
■What can I protect with the MP8000?
▲The MP8000 has a wide voltage and current range, and operates on 50/60 Hz to protect nearly any motor or pump. It can also be used to retrofit older current-only based electronic overloads.
■In what voltage range can the MP8000 operate?
▲90–690 V ac
■What ampere range does the MP8000 have?
▲0.5–1,000 A
■Do I need external current transformers for the current measurement?
▲For less than 100 A, conductors can be passed through the built-in current transformers on the MP8000. For applications above 100 A, external current transformers are required.
■What does the MP8000 protect against?
▲Overload (Overpower) (49)
▲Underload (Underpower) (37P)
▲Overcurrent (51)/Jam
▲Undercurrent (37)
▲Current Unbalance/Phase Loss (46)
▲Phase Reversal (47)
▲Overvoltage (59)
▲Undervoltage (27)
▲Voltage Unbalance (47)
▲Rapid Cycling/Jog
▲Contactor Failure
▲Zero-Sequence Ground Fault (50Ns)
▲PTC Motor Overtemperature (49)
■There are many models of the Littelfuse 777, including separate versions for motors and pumps. Are there also many versions of the MP8000?
▲No, the MP8000 is compatible with all of these applications except for the 777-HVR 480 V ac applications.
■Are there different versions of the MP8000 for single- phase versus 3-phase?
▲No, the MP8000 can be used in both single-phase and 3-phase applications.
■Can the MP8000 be used without the voltage protection functions?
▲Yes, the MP8000 can be put into current-only mode which will disable voltage-based protection functions. However, Littelfuse strongly recommends utilizing the voltage-based protection functions for superior protection especially prior to motor startup.
▲The current-only mode is intended for retrofit applications on voltages above 690 V ac.
■How was Littelfuse able to design a single unit to work in so many applications?
▲The small amount of space available on the front of a traditional relay limits the number of settings that can be displayed on the screen. By using an app to provide this information, we were no longer restricted when providing details about each setting.
▲We also took advantage of our long history with pump protection (single and 3-phase), to add unique capabilities useful for pump applications.
■What is the temperature range within which the MP8000 can operate?
▲−40 °C to 70 °C (–40 °F to 158 °F)
■What size is the MP8000?
▲The MP8000 is 74.4 mm high, 103.6 mm wide, and 121.7 mm deep.
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[ pump applications ][ motor ] |
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FAQ |
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Please see the document for details |
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English Chinese Chinese and English Japanese |
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060820 |
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Rev: 2-A-060820 |
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PF704 |
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727 KB |
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