Masterpact MTZ1 Operating Accessories

The shunt close (XF), shunt trip (MX), and undervoltage release (MN) are optional accessories mounted inside the device. They can be of standard type or diagnostic and communicating type (standard or with diagnostic function for the undervoltage release [MN]).

The standard XF, MX, and MN accessories can have either impulse-type or maintained actions, depending on the incoming commands.

The Masterpact shunt close (XF) is available as standard or with the diagnostic and communicating function.

The shunt close 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:

• Standard shunt close (XF): NVE40749

• Diagnostic and communicating shunt close (XF diag&com): NVE40766

The Masterpact shunt trip (MX) is available as standard or with the diagnostic and communicating function.

The shunt trip opens the circuit breaker instantaneously when powered. The minimum duration of the pulse operating order must be 200 ms. The MX standard trip 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:

• Standard shunt trip (MX): NVE40749

• Diagnostic and communicating shunt trip (MX diag&com): NVE40766

The Masterpact undervoltage release (MN) is available as standard or with the diagnostic and communicating function.

The 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:

• Standard undervoltage release (MN): NVE40749

• Diagnostic undervoltage release (MN diag): NVE40766

The internal isolation module for Micrologic X control units provides double isolation in compliance with IEC 60664-1 (up to 12 kV). It also provides isolation between the diagnostic and communicating shunt close (XF diag&com), diagnostic and communicating shunt trip (MX diag&com), diagnostic undervoltage release (MN diag), and the electrical closing pushbutton (BPFE).

For information on accessory installation, consult instruction sheet NVE40748 on the Schneider Electric website.

The electrical closing pushbutton (BPFE) 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 standard shunt closes (XF) or the communicating shunt close (XF diag&com).

If the 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.

This optional accessory is mounted on the front cover of the device.

For information on accessory installation, consult instruction sheet NVE40773 on the Schneider Electric website.

The ready-to-close contact (PF) indicates remotely that the circuit breaker is ready to close..

It indicates that the circuit breaker is ready to close when:

• The circuit breaker is in the open position.

• The spring mechanism is charged.

• There is no maintained opening order.

This optional accessory is mounted inside the device.

For information on accessory installation, consult instruction sheet NVE35466 on the Schneider Electric website.

This is an optional accessory that is mounted inside the device.

The spring charging motor (MCH) automatically charges the spring mechanism when the circuit breaker is closed, allowing instantaneous closing of the circuit breaker following opening.

For information on accessory installation, consult instruction sheet NVE35483, available on the Schneider Electric website.

This is an optional accessory that is mounted inside the device.

Following tripping, this function resets the overcurrent trip switch (SDE), and the mechanical indicator and enables circuit breaker closing.

The use of an closing release (XF) is required with this option.

The additional overcurrent trip switch (SDE2) is not compatible with RES.

For information on accessory installation, consult instruction sheet NVE35503, available on the Schneider Electric website.

The ERMS switch module (ESM) is an optional accessory mounted inside of the device.

It is used to engage ERMS protection settings with an external selector switch. The ESM module works in conjunction with the ERMS Digital Module, which must also be installed.

The ERMS switch module (ESM) is not compatible with M2C programmable contacts because they are installed in the same physical place.

The grounding kit (KMT) allows the circuit breaker mechanism to be grounded when the front cover is removed. The grounding is made through the cradle for the drawout version and through the mounting side plate for the fixed version.

This optional accessory is mounted inside the device.

For information on accessory installation, consult instruction sheet NVE35480 on the Schneider Electric website.

The mechanical operation counter (CDM) counts the number of operating cycles and is visible on the front panel. It is compatible with manual and electrical control functions.

This optional accessory is mounted inside the device.

This accessory is required for all source-changeover systems.

For information on accessory installation, consult instruction sheet NVE35485 on the Schneider Electric website.

The ULP port module is optional on the fixed device and standard on the drawout device. It is mounted with the terminal blocks of the device.

The ULP port module:

• Supplies the Micrologic X control unit.

• Integrates the ULP termination.

• Allows the connection to external ULP modules, like the IO module or the IFE Ethernet interface.

Fixed Device	Drawout Device

For information on accessory installation, consult the instruction sheets available on the Schneider Electric website:

• ULP port module for fixed Masterpact MTZ2/MTZ3: NVE40791.

• ULP port module for drawout Masterpact MTZ2/MTZ3: NVE40797.

The embedded Ethernet interface (EIFE) enables drawout Masterpact MTZ circuit breakers to be connected to an Ethernet network. 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 cradle: connected, test, and disconnected.

This optional accessory is mounted on the cradle of the drawout device.

For information on accessory installation, consult instruction sheet NVE23550 on the Schneider Electric website.

For information on accessory usage, refer to user Enerlin’X EIFE Embedded Ethernet Interface for One Masterpact MTZ Drawout Circuit Breaker - User Guide (DOCA0106EN), available on the Schneider Electric website.

The Ethernet interface (IFE) provides an Ethernet access to a single device. The device is connected to the IFE interface through the ULP port module and a prefabricated ULP cord.

For information on accessory installation, consult instruction sheet HRB49218 on the Schneider Electric website.

For information on accessory usage, refer to Enerlin’X IFE Ethernet Interface for One Circuit Breaker - User Guide (DOCA0084EN), available on the Schneider Electric website.

The Ethernet switchboard server (IFE) provides Ethernet access to one or several circuit breakers. It allows the following communication architectures:

• One single circuit breaker connected to the IFE server through the ULP port module.

• Up to 20 circuit breakers, including up to 12 Compact NSX devices, through the IFM Modbus-SL (RTU) interface for one circuit breaker stacked to the IFE server.

For information on accessory installation, consult instruction sheet HRB49218, available at the Schneider Electric website.

For information on accessory usage, refer to Enerlin’X IFE Ethernet Interface for One Circuit Breaker - User Guide (DOCA0084EN) on the Schneider Electric website.

The IFM Modbus-SL (RTU) interface provides access from a single device to a Modbus serial line communication network. 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: https://www.schneider-electric.us/en/download/document/NVE85393/.

The IO input/output application module for one circuit breaker is one component of the ULP architecture.

The IO input/output application module uses built-in applications to enhance control and monitoring functions. Its resources are:

• Six self-powered digital inputs for either NO and NC dry contact or pulse counters.

• Three digital outputs that are bistable relay (5 A maximum).

• One analog input for a Pt100 temperature sensor.

For information on accessory installation, consult instruction sheet HRB49217 on the Schneider Electric website.

For information on accessory usage, refer to Enerlin’X IO Input/Output Application Module for One Circuit Breaker - User Guide (0613IB1317) on the Schneider Electric website.