schneider electric mx shunt trip

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Shunt trip release MX, ComPacT NSX, 24VDC, screwless spring terminal connections

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Schneider Electric LV426843 Shunt Trip Release

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Part #: LV426843

SKU #: 2379726

Key Features

Brand :  Schneider Electric

Connection type :  Clamp Terminal, Spring

Mounting type :  Clip-On

Series :  LV4

Suitable For Use With :  PowerPact B Frame 15 to 125 A, Compact NSXm Molded Case Circuit Breaker, PowerPact™ B Frame 15 to 125 A, Compact™ NSXm Molded Case Circuit Breaker

Type :  Field Installable MX Standard

Square D Shunt Trip Release, Field Installable MX Standard, Series: LV4, 125 VAC/VDC, Spring, Clip-On Mount, For Use With: PowerPact B Frame 15 to 125 A, Compact NSXm Molded Case Circuit Breaker

Additional Description: SQD -LV426843 CIRCUIT BREAKER SHUNT TRIP 125V AC/DC

Catalog Description: Standard shunt trip release MX, ComPacT NSXm, 125VDC, 110/130VAC 50/60Hz

• Trips the circuit breaker when the control voltage rises above 70% of its rated voltage
• Control signals can be impulse type of >=20 ms or maintained control signals
• A 110 to 130 VAC shunt trip is suitable for ground fault protection when combined with a class I ground fault sensing element

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Irkutsk Oblast, Russia

The capital city of Irkutsk oblast: Irkutsk .

Irkutsk Oblast - Overview

Irkutsk Oblast is a federal subject of Russia located in Eastern Siberia, in the south-eastern part of the Siberian Federal District. Irkutsk is the capital city of the region.

The population of Irkutsk Oblast is about 2,357,000 (2022), the area - 774,846 sq. km.

Irkutsk oblast flag

Irkutsk oblast coat of arms.

Irkutsk oblast map, Russia

Irkutsk oblast latest news and posts from our blog:.

19 April, 2023 / Steam Locomotive of the Circum-Baikal Railway .

8 June, 2021 / Irkutsk - the view from above .

4 April, 2019 / Cities of Russia at Night - the Views from Space .

16 November, 2017 / The Lost World of Tofalaria .

22 September, 2016 / The train ride along the shore of Lake Baikal .

More posts..

News, notes and thoughts:

5 October, 2013   / Typical news from Russia. In Irkutsk region, the bear made his way in one of the cottages located near Ust-Ilimsk. By night, the bear climbed onto the veranda through the window and ate the whole pot of borsch while owners were in the banya. Arrived on the scene the police shot into the air and the bear ran into the woods.

Irkutsk Oblast - Economy

Irkutsk Oblast is rich in such natural resources as oil, natural gas, gold, iron, coal. It is an important transport hub of Siberia - the Trans-Siberian Railway and the Baikal-Amur Railway pass through its territory. The main rivers are the Angara, Belaya, Iya, Kitoy, Irkut, Oka, Lena, Kirenga, and Nizhnaya Tunguska.

This region plays a significant role in the Russian industry. In the all-Russian production it makes about 6,5% of power production, 15% of timber export, 6% of coal mining, almost 20% of pulp production, over 10% of carton, about 9% of oil.

The following industries are the most developed: timber and wood-processing, pulp and paper, mining, fuel, non-ferrous metallurgy, power engineering, machine-building, chemical and oil, food and ferrous metallurgy. Hydro-power industry is also well developed (the main dams: Irkutsk Dam, Bratsk Dam, Ust-Ilimsk Dam). Industrial enterprises are mainly located in Irkutsk and several district centers.

The railway is the main means of transport. The main transport line is the Trans-Siberian Railway. The western part of the Baikal-Amur Railway stretches from the town of Taishet to the east through the territory of the region. The total length of railways is about 2,500 km.

There are two airports in the cities of Irkutsk and Bratsk, they are international airports and offer flights to China, Mongolia, Tajikistan, Thailand, Uzbekistan, South Korea.

Several large navigable rivers flow through the region - the Angara, Lena, Nizhnyaya Tunguska. The largest ports are located on the Lena - Kirensk and Osetrovo. They provide cargo transportation to the Republic of Sakha (Yakutia) and the northern seaport of Tixi.

Nature of Irkutsk Oblast

Beautiful nature of the Irkutsk region

Author: Kovalev Maksim

River in Irkutsk Oblast

Author: Roman Romanov

Lake in Irkutsk Oblast

Author: V.Chokan

Irkutsk Oblast - Features

Irkutsk Oblast is a large subject of the Russian Federation that is almost equal to the territory of Turkey. It is the largest region of Russia that has no outlet to the sea. From north to south the region stretches for about 1,450 km, from west to east - for 1,318 km.

The distance from Irkutsk to Moscow by rail - 5,192 km, to Vladivostok - 4,106 km. Time difference between Irkutsk and Moscow - 5 hours. The largest cities and towns of Irkutsk Oblast are Irkutsk (617,200), Bratsk (222,500), Angarsk (220,000), Ust-Ilimsk (78,700), Usolie-Sibirskoye (73,800).

The climate in the Irkutsk region is sharply continental, with long cold winters and short hot and dry summers.

Irkutsk Oblast has a rich history: ancient sites, the Russians settling in eastern Siberia, Decembrists, the Soviet construction sites - there are historical monuments in almost every settlement. Over 60 museums are open in the region, they attract historians and tourists from Europe and Asia.

Attractions of Irkutsk Oblast

Baikal , the largest freshwater lake in the world, occupies a special place among the riches of Siberia. This lake is a wonderful natural monument known for its extremely clean, very clear water. Baikal is a unique sea-lake sung in legends and tales of antiquity, one the centers of Asian culture. It is a great place for eco-tourism.

The Circum-Baikal Railway , offering stunning views of the lake and its surroundings, is one of the most visited places of the region. It is an amazing piece of engineering, a historical monument of the 19th century. There are 38 tunnels with total length of 9,063 m, 15 stone galleries, 3 concrete galleries, 248 bridges and viaducts, 172 architectural monuments.

Olkhon , the largest on Lake Baikal, is also popular among tourists. In Buryat folk legends, Olkhon Island is a mysterious place; to this day it is known as the center of shamanism.

Khamar-Daban, Primorsky, North Baikal ridges, Sayan spurs, Olkhinskoye plateau are unique place not only for mountaineering but also for downhill skiing. Tourists are also attracted by mountain skiing in Baikalsk city.

About 60 km from Irkutsk there is an architectural and ethnographical museum “Taltsy”.

Irkutsk oblast of Russia photos

Pictures of irkutsk oblast.

Early autumn in the Irkutsk region

Author: Taranovsky

Sunset in Irkutsk Oblast

Author: Konstantin Vavilov

Church in Irkutsk Oblast

Orthodox church in the Irkutsk region

Author: Gennady Taraskov

• Currently 3.06/5

Rating: 3.1 /5 (170 votes cast)

THE 10 BEST Bratsk Sights & Historical Landmarks

Bratsk landmarks.

• Churches & Cathedrals
• Arenas & Stadiums
• Points of Interest & Landmarks
• Monuments & Statues
• 5.0 of 5 bubbles
• 4.0 of 5 bubbles & up
• Good for a Rainy Day
• Good for Kids
• Good for Big Groups
• Adventurous
• Budget-friendly
• Hidden Gems
• Good for Couples
• Honeymoon spot
• Good for Adrenaline Seekers
• Things to do ranked using Tripadvisor data including reviews, ratings, photos, and popularity.

1. Bratsk Hydroelectric Power Station

2. Church of the Nativity

3. Orthodox Church of the Assumption of the Mother of God

4. Glory Memorial

5. grace church in christ, 6. church of all saints resplendent in the russian land.

7. The Roman Catholic Church of Saints Cyril and Methodius

8. Metallurg

9. angara stadium.

10. Bratsk River Port

11. pingvin hockey court, 12. transfiguration church, 13. lokomotiv, 14. church in the name of saint innocent metropolitan of moscow.

• Bratsk Hydroelectric Power Station
• Church of the Nativity
• Glory Memorial
• Orthodox Church of the Assumption of the Mother of God
• Bratsk River Port

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• Validity Scope
• Document Scope
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Masterpact Shunt Close (XF), Shunt Trip (MX) and Undervoltage Release (MN) Accessories

Masterpact shunt close (xf), masterpact shunt trip (mx), masterpact undervoltage release (mn), masterpact communicating internal isolation module, masterpact electrical closing pushbutton (bpfe), masterpact ready-to-close contact (pf), masterpact spring charging motor (mch), masterpact electrical remote reset (res), masterpact erms switch module (esm), masterpact grounding kit (kmt), masterpact mechanical operation counter (cdm), masterpact ulp port module, masterpact embedded ethernet interface (eife), masterpact ethernet interface (ife) for one circuit breaker, masterpact ethernet switchboard server (ife), masterpact ifm modbus-sl (rtu) interface for one circuit breaker, masterpact io input/output application module.

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• Masterpact MTZ2/MTZ3 Device Removal
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• Locking the Masterpact MTZ2/MTZ3 Pushbuttons
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• Locking the Masterpact MTZ2/MTZ3 Device Open with VCPO
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Masterpact MTZ2/MTZ3 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.

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.

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.

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 on the Schneider Electric website.

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

The use of a shunt close (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 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.

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 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:

Supplies 24 Vdc power to the Micrologic X control unit.

Integrates the ULP termination with the Micrologic X control unit.

Allows the connection of the Micrologic X control unit to external ULP modules, such as the embedded Ethernet interface (EIFE)) or the Ethernet interface (IFE).

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.

For information on accessory installation, consult the instruction sheet 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.

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What is a shunt trip mx used for.

A Shunt Trip coil is used to remotely trip a circuit breaker and some switch disconnectors. Schneider Electric uses the abbreviation MX or iMX for Shunt Trip coils. A Shunt Trip coil has to have a voltage applied to it to trip the device. An example of an application for a Shunt Trip would be for load shedding. A second example would be for an EPO circuit with N/O EPO contacts wired in parallel.

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