XF, MX, and MN Voltage Releases
XF, MX, and MN voltage releases are optional accessories mounted inside the device. They can be of standard type or diagnostic and communicating type (standard or with diagnostic function for MN undervoltage release).
The standard voltage releases are designed to receive either pulse-type or maintained voltage operating orders.
XF Closing Voltage Release (Standard or With Diagnostic and Communicating Function)
The XF closing voltage release closes the circuit breaker instantaneously when powered if the spring mechanism is charged. The minimum duration of the pulse operating order must be 200 ms.
For information on installation, consult the instruction sheet on the Schneider Electric website:
oXF standard closing voltage release: NVE40749
oXF communicating closing voltage release: NVE40766
MX Opening Voltage Release (Standard or With Diagnostic and Communicating Function)
The MX opening voltage release opens the circuit breaker instantaneously when powered. The minimum duration of the pulse operating order must be 200 ms. The MX standard opening voltage release locks the circuit breaker in OFF position if the command is maintained.
For information on installation, consult the instruction sheet on the Schneider Electric website:
oMX standard opening voltage release: NVE40749
oMX communicating opening voltage release: NVE40766
MN Undervoltage Release (Standard or With Diagnostic Function)
The MN undervoltage release instantaneously opens the circuit breaker when its supply voltage drops to a value between 35% and 70% of its rated voltage. If there is no supply to the release, it is impossible to close the circuit breaker, either manually or electrically. Any attempt to close the circuit breaker has no effect on the main contacts. Circuit breaker closing is enabled again when the supply voltage of the release returns to 85% of its rated value.
For information on installation, consult the instruction sheet on the Schneider Electric website:
oMN standard undervoltage release: NVE40749
oMN undervoltage release with diagnostic function: NVE40766
Isolation Module for Communicating Voltage Releases
The internal isolation module for MicroLogic X control units provides double insulation in compliance with IEC 60664-1 (up to 12 kV). It also provides insulation between the XF, MX, and MN types of voltage release.
For information on installation, consult the instruction sheet on the Schneider Electric website: NVE40748.
BPFE Electrical Closing Pushbutton
This is an optional accessory that is mounted on the front cover of the device.
The BPFE electrical closing pushbutton carries out electrical closing of the circuit breaker. It takes into account the internal closing conditions of the device and the external conditions that are part of the control and monitoring system of the installation. It connects to the XF standard or communicating closing voltage release.
If BPFE is being used, it is recommended to lock access to the closing pushbutton using the VBP accessory because the closing pushbutton does not take into account internal and external conditions.
For information on installation, consult the instruction sheet on the Schneider Electric website: NVE40773.
This is an optional accessory that is mounted inside the device.
The PF ready-to-close contact delivers remotely, the indication delivered locally by the ready-to-close indicator.
It consists of a changeover contact indicating remotely that the circuit breaker is ready to close, that is:
oThe circuit breaker is in the open position.
oThe spring mechanism is charged.
oThere is no maintained opening order.
For information on installation, consult the instruction sheet on the Schneider Electric website: NVE35466.
This is an optional accessory that is mounted inside the device.
The MCH gear motor automatically charges the spring mechanism when the device is closed, allowing instantaneous closing of the device following opening.
For information on installation, consult the instruction sheet on the Schneider Electric website: NVE35483.
This is an optional accessory that is mounted inside the device.
Following tripping, this function resets the SDE fault-trip indication contact, and the mechanical indicator and enables circuit breaker closing.
The use of an XF closing release is compulsory with this option.
The RES electrical remote reset is not compatible with the SDE2 additional fault-trip indication contact because they are installed in the same physical place.
For information on installation, consult the instruction sheet on the Schneider Electric website: NVE35503.
This is an optional accessory that is mounted inside the device.
The ESM ERMS switch module is used to engage ERMS protection settings.The ESM module works in conjunction with the ERMS Digital Module, which must also be installed.
The ESM ERMS switch module is not compatible with M2C programmable contacts because they are installed in the same physical place.
For installation of the ESM ERMS switch module, contact your Schneider Electric field service representative.
This is an optional accessory that is mounted inside the device.
This option allows the device mechanism to be grounded when the front cover is removed. The grounding is made through the chassis for the drawout version and through the mounting side plate for the fixed version.
For information on installation, consult the instruction sheet on the Schneider Electric website: NVE35480.
CDM Mechanical Operation Counter
This is an optional accessory that is mounted inside the device.
The CDM mechanical operation counter counts the number of operating cycles and is visible on the front panel. It is compatible with manual and electrical control functions.
This option is compulsory for all source-changeover systems.
For information on installation, consult the instruction sheet on the Schneider Electric website: NVE35485.
The ULP port module is optional on the fixed circuit breaker and standard on the drawout circuit breaker. It is mounted with the terminal blocks of the circuit breaker.
The ULP port module:
oSupplies the MicroLogic X control unit.
oIntegrates the ULP termination.
oAllows the connection to external ULP modules, like the IO module or the IFE Ethernet interface.
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Fixed circuit breaker: 
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Drawout circuit breaker: 
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For information on installation, consult the instruction sheet on the Schneider Electric website:
oULP port module for fixed MasterPact MTZ2/MTZ3: NVE40791
oULP port module for drawout MasterPact MTZ2/MTZ3: NVE40797
EIFE Embedded Ethernet Interface
This is an optional accessory that is mounted on the chassis of the drawout circuit breaker.
The EIFE embedded Ethernet interface enables drawout MasterPact MTZ circuit breakers to be connected to an Ethernet network with the following protocols:
oModbus TCP/IP
oIEC 61850 with addition of the IEC 61850 for MasterPact MTZ Digital Module
It provides digital access to all the data delivered by the MicroLogic X control unit. In addition, it monitors the position of the device in the chassis: connected, test, and disconnected.
For information on installation, consult the instruction sheet on the Schneider Electric website: NVE23550.
For information on usage, refer to DOCA0106EN Enerlin'X EIFE - Embedded Ethernet Interface for One MasterPact MTZ Drawout Circuit Breaker - User Guide.
IFE Ethernet Interface for One Circuit Breaker
The IFE Ethernet interface provides an Ethernet access to a single circuit breaker with the following protocols:
oModbus TCP/IP
oIEC 61850 with addition of the IEC 61850 for MasterPact MTZ Digital Module
The circuit breaker is connected to the IFE interface through the ULP port module and a prefabricated ULP cord.
For information on installation, consult the instruction sheet on the Schneider Electric website: HRB49218.
For information on usage, refer to DOCA0142EN Enerlin'X IFE - Ethernet Interface for One IEC Circuit Breaker - User Guide.
IFE Ethernet Switchboard Server
The IFE Ethernet switchboard server provides an Ethernet access to one or several circuit breakers with the Modbus TCP/IP protocol. It allows the following communication architectures:
oOne single circuit breaker connected to the IFE server through the ULP port module.
oUp to 11 circuit breakers through IFM Modbus-SL interfaces stacked to the IFE server.
For information on installation, consult the instruction sheet on the Schneider Electric website: HRB49218.
For information on usage, refer to DOCA0084EN Enerlin'X IFE - Ethernet Switchboard Server - User Guide.
IFM Modbus-SL Interface for One Circuit Breaker
The IFM Modbus-SL interface provides an access to a Modbus serial line communication network to a single device. The device is connected to the IFM interface through the ULP port module and a prefabricated ULP cord.
For information on installation, consult the instruction sheet on the Schneider Electric website: NVE85393.
IO Input/Output Application Module for One Circuit Breaker
The IO input/output application module for one circuit breaker is one of the components of the ULP architecture.
The IO application module enhances control and monitoring functions, thanks to its built-in applications. Its resources are:
oSix digital inputs that are self-powered for either NO and NC dry contact or pulse counter.
oThree digital outputs that are bistable relay (5 A maximum).
oOne analog input for Pt100 temperature sensor.
For information on installation, consult the instruction sheet on the Schneider Electric website: HRB49217.
For information on usage, refer to DOCA0055EN Enerlin'X IO - Input/Output Application Module for One IEC Circuit Breaker - User Guide.
