Littelfuse MP8000 Series Installation guide

FAQ
MP8000
Bluetooth Overload Relay

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FAQ MP8000 BLUETOOTH
OVERLOAD RELAY
MP8000 SPECIFICATIONS
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)
Patented

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FAQ MP8000 BLUETOOTH
OVERLOAD RELAY
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.
INSTALLATION AND OPERATION
How do I install
the MP8000?
The MP8000 can be surface or panel mounted, or installed on a
DIN rail.
Do I need to physically
access the MP8000 to
view information and
modify settings?
No, the MP8000 uses Bluetooth* to connect to iPhone*, iPad*,
and Android* smartphones and tablets via the Littelfuse app. This
enhances the user's safety as it allows remote access.
How can I reset the relay
to get my motor or
pump running?
Resetting the MP8000 can be done through the Littelfuse MP8000
app, through an optional pushbutton, or remotely through the
MP8000 network supported interfaces.
Do I need to purchase
separate displays to
connect to the MP8000?
No, the MP8000 leverages the smartphone or tablet that you already
own. This alleviates the expensive purchase of multiple displays.

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FAQ MP8000 BLUETOOTH
OVERLOAD RELAY
CONNECTIVITY
Can I connect to the
MP8000 through Bluetooth? Yes, the MP8000 communicates using Bluetooth Low Energy (BLE).
What is the maximum
Bluetooth range?
The distance is affected by the type of smartphone or tablet used,
the location of the MP8000 installation, and potential attenuation
of the Bluetooth signal due to the enclosure type. In general, the
distance is up to 10 meters. This enables the user to be located
near the motor and pump, which may be useful in troubleshooting
any issues.
Do I need to have cellular
service to connect to
the MP8000?
No, Bluetooth connections do not use cellular signals. This features
enables older smartphones that are out of service to be used by
workers to connecting to the MP8000.
Can I connect to the
MP8000 remotely?
Yes, you can access the information remotely through the Littelfuse
MP8000 PC software or through other software programs
communicating with the MP8000 through the Ethernet interface.
The MP8000 PC software can be downloaded for free by visiting
the MP8000 product page and completing the registration form.
What type of protocol do
you use to network
the MP8000?
Ethernet Modbus TCP and EtherNet/IP*
Is the IP address dynamic
or static?
Each MP8000 unit has a dynamic IP address. The IP address can
be changed to static by connecting to the embedded user interface
on the MP8000. Firmware version 3.11.20.20 and newer, when used
with phone app version 6.0.0 or newer, allows the user to also
configure the static IP, subnet mask, and gateway IP through the
phone app.
Can multiple devices be
connected to the MP8000
at one time?
The MP8000 can be connected to one Littelfuse app at a time
through Bluetooth, as well as up to two Modbus TCP servers at
the same time. This was designed to support redundant server
operations. If two servers are connected at the same time, it is up
to the user to be aware of which server is making modifications. If
one server makes a modification and the second then changes that
value, the MP8000 will use the second server's modifications or the
last modification value.
How does a Bluetooth-
enabled relay enhance
personnel safety?
Traditional relays require the user to open the electrical cabinet's
(where relays are typically installed) panel door in order to to use
the relay, whether it's to modify the settings, or to review the cause
of a trip event.
Opening the panel door exposes the worker to shock hazards.
Bluetooth, however, enables remote access to these settings,
metering, and data log information which prevents personnel from
unnecessarily having to open the door, and thus unnecessarily
expose themselves to shock hazards.

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FAQ MP8000 BLUETOOTH
OVERLOAD RELAY
MP8000 APP
Which smartphones and
tablets are compatible
with the MP8000
Apple iPhone 5th generation and higher
Apple iPad 4th generation and higher
Android Smartphones with Bluetooth 4.0 – BLE
Android Tablets with Bluetooth 4.0 – BLE
What is the minimum
operating system required
for my smartphone or
tablet to run on?
IOS version 10.0 and higher, or Android version 8.0
and higher.
Where can I obtain the
Littelfuse app?
The Littelfuse app is available in the Apple App Store and in
Google Play.
How much does the
Littelfuse app cost? The Littelfuse app is free.
Do I need to pair to an
MP8000 every time I
want to use it?
No, the pairing process is one-time per MP8000 unit for each
smartphone or tablet used.
How do I disconnect from
an MP8000?
You can disconnect your device from the MP8000 by pressing the
back arrow until the initial app screen is displayed, by exiting the
app, or by moving out of range of the MP8000 signal.
I have multiple MP8000
units. How can I tell which
one I want to connect to?
The MP8000 units are displayed in the app based on signal
strength, with the strongest signal at the top. The strongest signal
is most likely the closest.
Can I rename the units? Yes, you can rename the units with up to 12 characters.
This is my first time
connecting to my MP8000,
and it is prompting me to
configure it. Do I need to?
Yes, the MP8000 must be configured prior to its first use to
properly protect the motor. The high voltage setting's default is
set to be below the low voltage setting and must be changed to
remove the prompt.
What is the difference
between “Basic” and
“Advanced” settings?
“Basic” settings are more typically used while “Advanced” settings
are less commonly used.
If I need more information
while inputting settings,
where can I find it?
The full MP8000 product manual can be found on the MP8000
product page.
How can I tell what the
most recent fault is?
Faults are listed on the “Fault” screen with the most recent at the
top. Faults are time and date stamped to help with troubleshooting.

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FAQ MP8000 BLUETOOTH
OVERLOAD RELAY
What information is
included in a fault?
The MP8000 provides an expansive set of information on the
electrical conditions at the time the fault is detected, such as:
 voltage
 current
 current unbalance
 voltage unbalance
Please consult the MP8000's datasheet for a complete list of all the
information it provides.
How many faults are stored
on the MP8000? The most recent 1,000 faults are stored on the MP8000.
SECURITY
What security is built into
the MP8000 to prevent
unauthorized people
from connecting to it?
The MP8000 has two levels of security. The first is a pairing
code that is required to connect to the unit and view real-time
information, settings and faults. The second level of security is a
password, which is required to modify any settings on the unit.
This allows customers to segment personnel to those that can view
only, and those that can make modifications.
Where can I find the
pairing code?
The pairing code is located on a label on the MP8000. An extra
label is provided that can be placed in a separate area, such as a
log book.
Will I be asked for the
pairing code each time
I want to connect
to the MP8000?
You will only be asked once for the pairing code for each MP8000
for each smartphone or tablet used.
Where can I find the default
password to change
the settings?
The default password is located on a label on the MP8000. The
MP8000 comes with an extra label that can be placed in a separate
area, such as a log book.
Can I change the password? Yes, the password can be changed.
Do I need to enter the
password each time I
change a setting?
When changing settings, you are only asked for a password once
per session. If you disconnect from the MP8000, which can occur if
you move out of range, you will be prompted to enter the password
the next time you connect to the MP8000 and attempt to change
a setting.
What happens if I lose my
pairing code or password?
Obtain the MAC address from the label on the unit and contact
Littelfuse relay technical support at [e-mail] or
1-800-832-3873 for assistance to obtain the original settings.

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FAQ MP8000 BLUETOOTH
OVERLOAD RELAY
*Bluetooth, Android, iPhone, and iPad are trademarks of their respective owners.
AVAILABILITY
Where can I purchase
the MP8000?
Please contact your local Littelfuse relay distributor, which can be
found on the Littelfuse website.
Can a Littelfuse account
manager contact me so I
can see a demo of
the MP8000?
Yes, please contact your local Littelfuse representative. Your local
representative can be found on the Littelfuse website.
REGULATORY APPROVALS
What regulatory approvals
does the MP8000 have? UL, cUL, CE, FCC, and RCM

Additional technical information and application data for Littelfuse protection relays, fuses and other circuit protection and safety products can
be found on Littelfuse.com/protectionrelays. For questions, contact our Technical Support Group (800-832-3873).
© 2020 Littelfuse, Inc.
For more information, visit
Littelfuse.com/MP8000
FORM: PF704
Rev: 2-A-060820
Disclaimer Notice – Information furnished is believed to be accurate and reliable. However, users should independently evaluate the suitability of and test each product selected for their own applications.
Littelfuse products are not designed for, and may not be used in, all applications. Read complete Disclaimer Notice at www.littelfuse.com/product-disclaimer.