Product Overview

The Schneider Electric MVS25H EasyPact Air Circuit Breaker (ACB) is a low-voltage circuit protection device designed for power distribution systems in industrial facilities, commercial buildings, and large electrical installations. It belongs to the EasyPact MVS product family and is designed to protect electrical distribution circuits against overloads and short-circuit faults.

Air circuit breakers are commonly installed in main distribution boards, switchboards, and power control assemblies where high current capacity and dependable circuit isolation are required. They provide a means of switching and protecting electrical circuits while helping reduce the risk of equipment damage caused by abnormal current conditions.

The MVS25H is a 2500 A frame and rated-current class within the EasyPact MVS range. The series supports operating voltages up to 690 V AC at 50/60 Hz. Its H breaking-capacity class provides a high level of short-circuit interruption capability, making it suitable for appropriately engineered low-voltage distribution applications.

The circuit breaker uses an electronic trip unit to monitor electrical conditions and initiate tripping when configured protection thresholds are exceeded. Depending on the complete catalog number, the breaker may have different trip-unit versions, operating mechanisms, pole configurations, and mounting arrangements.

The MVS25H designation alone does not identify every configuration detail. A complete order reference is necessary to determine whether a particular unit is three-pole or four-pole, fixed or drawout, manually or electrically operated, and equipped with a specific electronic trip unit.

For industrial maintenance and replacement projects, verifying the complete product reference is essential. Selecting a circuit breaker based only on the MVS25H family name may result in differences in wiring, protection functions, installation dimensions, or switchboard compatibility.

Technical Specifications

Important: MVS25H is a product family designation. The electrical and mechanical specifications of an individual breaker must be verified against its complete catalog number and nameplate. The dimensions and weight above are the supplied listing values and should be checked against the exact configuration.

Function and Working Principle

The MVS25H air circuit breaker provides switching and protective functions within a low-voltage electrical distribution system. Its operation involves current monitoring, fault detection, contact separation, and interruption of the electrical current.

1. Normal Current Switching

During normal operation, the circuit breaker allows electrical current to flow through its main contacts. These contacts form part of the power path between the incoming supply and the protected distribution circuit.

The breaker can be used to connect or disconnect electrical circuits as part of normal distribution-system operation. Its operating mechanism controls the opening and closing of the main contacts.

For large distribution systems, the breaker is typically installed in a switchboard or distribution assembly designed to accommodate its current rating and physical dimensions.

2. Overload Protection

An overload occurs when a circuit carries more current than its intended operating level for a period of time. Prolonged overload conditions can cause conductors, busbars, and connected equipment to overheat.

The electronic trip unit monitors current and compares it with the configured protection settings. When an overload exceeds the applicable threshold for the required time, the trip unit initiates a breaker trip.

The precise overload protection functions and adjustment ranges depend on the installed trip-unit version.

3. Short-Circuit Protection

A short circuit can produce a very high fault current within a short period. Without suitable protection, this current may cause severe thermal and mechanical stress on electrical equipment.

The MVS25H series is designed to interrupt high fault currents within its specified breaking-capacity limits. When the electronic protection system detects a qualifying fault, it activates the tripping mechanism and separates the main contacts.

The H breaking-capacity class provides up to 65 kA ultimate breaking capacity at 220–440 V AC and 50 kA at 690 V AC for the documented series configurations. The actual installation must be checked against the available prospective short-circuit current.

4. Electronic Trip Unit Operation

The electronic trip unit is responsible for monitoring electrical current and applying the selected protection settings.

Depending on the installed trip-unit model, available protection functions may include:

• Long-time overload protection.
• Short-time short-circuit protection.
• Instantaneous short-circuit protection.
• Ground-fault protection, where supported by the configuration.
• Fault indication and diagnostic information.

Not every MVS25H breaker includes the same protection functions. Engineers should check the complete reference and trip-unit documentation before relying on a specific protection feature.

5. Circuit Isolation

The MVS25H family is designed for circuit isolation in accordance with the applicable IEC requirements. When correctly installed and operated, the breaker can provide a means of disconnecting the protected circuit for appropriate electrical work.

Isolation procedures must still follow site safety rules. A breaker should not be treated as a substitute for all required lockout, verification, and safe-working procedures.

Role in Industrial Power Distribution Systems

The MVS25H is intended for applications where large electrical loads require coordinated distribution and protection. It can form part of the main incoming protection or a major distribution feeder within an industrial low-voltage system.

Main Distribution Board Protection

In a main distribution board, the circuit breaker can protect the incoming supply or a major outgoing feeder. Its 2500 A rating makes it relevant to installations with substantial electrical demand.

The breaker must be coordinated with the upstream transformer, busbar system, downstream protective devices, and the calculated fault level.

Industrial Switchboard Integration

The MVS25H can be incorporated into industrial switchboards and power distribution assemblies designed for the relevant breaker configuration.

The switchboard must provide appropriate mounting support, busbar connections, clearances, and electrical insulation. Fixed and drawout configurations require different mechanical arrangements.

Protection Coordination

Protection coordination helps ensure that the protective device closest to a fault operates when possible, reducing unnecessary interruption to other parts of the electrical network.

The MVS25H’s electronic trip settings can form part of a coordinated protection strategy. Engineers should evaluate the breaker alongside upstream and downstream protective devices using the system’s fault-current calculations and coordination study.

Electrical System Monitoring

Where the installed trip unit provides suitable indication or communication functions, breaker status and fault information may be incorporated into a wider electrical monitoring system.

Available monitoring functions depend on the exact trip-unit and accessory configuration. Communication capability should not be assumed from the MVS25H family designation alone.

Industrial Applications

The MVS25H air circuit breaker is designed for low-voltage power distribution applications where high current ratings and short-circuit protection are required.

1. Industrial Manufacturing Plants

Manufacturing facilities often contain multiple production lines, large motors, heating equipment, compressors, and auxiliary electrical systems.

A 2500 A circuit breaker may be used as an incoming or feeder protection device in a suitably designed distribution assembly. It helps protect the electrical system against overloads and short-circuit faults.

2. Commercial Buildings

Large commercial buildings may require substantial electrical distribution capacity for lighting, elevators, HVAC systems, pumps, and other building services.

An appropriately selected MVS25H configuration can serve as part of a low-voltage main distribution system, provided its ratings and protection characteristics match the installation.

3. Data Centers

Data centers require carefully designed electrical distribution systems to supply servers, cooling equipment, UPS systems, and other critical infrastructure.

An air circuit breaker may be used in the main or secondary distribution arrangement. Its rated current and interruption capacity must be coordinated with the power system design and the required continuity strategy.

4. Infrastructure and Utility Facilities

Water treatment plants, transportation infrastructure, and other utility facilities often rely on large low-voltage distribution networks.

The MVS25H may be considered for suitable distribution feeders and main switchboard applications where the current and fault-level requirements fall within its ratings.

5. Industrial Power Control Rooms

Power control rooms contain switchboards and distribution assemblies that supply different plant sections. A high-current air circuit breaker can provide a central protective and switching point for a major electrical circuit.

The breaker must be selected according to the system voltage, rated current, fault level, and installation arrangement.

Installation and System Integration

Correct installation is essential for safe operation and reliable electrical protection. Because the MVS25H is a high-current air circuit breaker, installation should be performed by qualified electrical personnel.

1. Verify the Complete Catalog Number

Before installation, identify the full catalog number on the product label. Confirm the pole configuration, trip-unit model, operating mechanism, mounting type, and any installed accessories.

The MVS25H designation identifies the product family but does not establish every configuration detail.

2. Check Electrical System Ratings

Confirm that the electrical system voltage, frequency, rated current, and prospective short-circuit current are compatible with the selected breaker.

The 2500 A rated-current value should not be treated as a universal setting for every installation. Protection settings must be selected according to the conductor, busbar, load, and system design.

3. Confirm Mounting and Switchboard Compatibility

The supplied dimensions are 352 × 422 × 297 mm. Verify these dimensions against the exact breaker configuration and the manufacturer’s installation drawing.

For drawout versions, the associated chassis and switchboard arrangement must also be compatible. Fixed versions require the appropriate mounting support and connection arrangement.

Allow sufficient clearance for connections, heat dissipation, operation, inspection, and maintenance.

4. Busbar and Cable Connections

The incoming and outgoing connections must be suitable for the rated current and installation conditions. Busbar dimensions, conductor material, connection hardware, and tightening requirements should follow the manufacturer’s instructions.

Incorrect connections can lead to excessive contact resistance, localized heating, and equipment damage.

5. Configure the Electronic Trip Unit

Set the electronic protection parameters according to the protection coordination study and the characteristics of the protected circuit.

Important settings may include long-time pickup, long-time delay, short-time pickup, short-time delay, and instantaneous pickup, depending on the installed trip unit.

Do not copy settings from another breaker without confirming that the electrical system and protected equipment are equivalent.

6. Commissioning and Functional Checks

Before energizing the circuit, inspect the mechanical installation, electrical connections, grounding arrangements, and protective settings.

Commissioning should include the appropriate mechanical and electrical checks, trip-unit verification, and functional tests specified by Schneider Electric and the applicable site procedures.

Record the final protection settings and test results for future maintenance.

Compatible System Components

The MVS25H is generally installed as part of a complete low-voltage distribution assembly. The following components may form part of the associated system, depending on the application and breaker configuration.

The table describes typical distribution-system components. It does not mean that all accessories are included with every MVS25H breaker.

Alternative Models and Replacement Considerations

When replacing an MVS25H, the alternative should be selected according to electrical performance, mechanical fit, protection functions, and switchboard compatibility.

Before approving a replacement, compare:

• Rated operational voltage.
• Rated current and frame size.
• Ultimate and service breaking capacity.
• Number of poles.
• Fixed or drawout mounting.
• Manual or electrical operating mechanism.
• Electronic trip-unit model and protection functions.
• Auxiliary contacts and release accessories.
• Busbar and terminal arrangements.
• Switchboard dimensions and mounting requirements.
• Protection coordination and commissioning requirements.

A replacement breaker should never be selected solely because it has the same nominal current rating. Its breaking capacity, trip characteristics, and mechanical compatibility must also meet the installation requirements.

Key Advantages

High Current Distribution Capability

The MVS25H is designed for a 2500 A current class, making it suitable for appropriately engineered main distribution and feeder applications.

High Short-Circuit Breaking Capacity

Its H breaking-capacity class provides up to 65 kA at 220–440 V AC and 50 kA at 690 V AC in the documented configurations.

Electronic Protection

The electronic trip-unit architecture supports adjustable protection functions, with exact capabilities determined by the installed trip-unit version.

Flexible Configuration Options

The MVS25H family includes different pole configurations, mounting arrangements, and operating mechanisms. This allows the product family to address different distribution-system requirements.

Circuit Isolation Capability

The series is suitable for isolation according to the applicable IEC requirements when installed and used as specified.

Industrial Power Distribution Application

The breaker is designed for use in industrial and commercial low-voltage distribution assemblies that require high-current switching and protection.

Technical FAQs

1. What is the Schneider Electric MVS25H?

The MVS25H is an EasyPact MVS air circuit breaker designed for low-voltage power distribution and circuit protection. It belongs to the 2500 A current class.

2. What is the rated current of the MVS25H?

The documented rated current is 2500 A at 40 °C. The correct protection settings depend on the complete breaker configuration and the electrical installation.

3. What is its maximum operating voltage?

The series supports rated operational voltage up to 690 V AC at 50/60 Hz, subject to the specific breaker configuration.

4. What is the breaking capacity of the MVS25H?

For the documented H-class configurations, the ultimate breaking capacity is 65 kA at 220–440 V AC and 50 kA at 690 V AC.

5. Does the MVS25H have an electronic trip unit?

Yes. The MVS25H configurations use electronic trip-unit technology. The exact trip-unit model and available protection functions depend on the complete catalog number.

6. Is the MVS25H fixed or drawout?

The product family includes both fixed and drawout configurations. The mounting arrangement must be confirmed from the complete catalog number.

7. Can the MVS25H be used in a main distribution board?

It can be used in a suitably designed low-voltage main distribution board when the rated current, voltage, breaking capacity, and protection characteristics meet the system requirements.

8. Is the MVS25H suitable for 690 V AC systems?

The series has a rated operational voltage of up to 690 V AC. The available breaking capacity at this voltage is lower than at 220–440 V AC, so the system fault level must be checked carefully.

9. What should be checked before purchasing an MVS25H?

Verify the complete catalog number, pole count, mounting type, trip-unit version, operating mechanism, accessories, nameplate ratings, and physical condition. For replacement projects, also check switchboard and busbar compatibility.

10. Can another 2500 A circuit breaker replace the MVS25H?

Not automatically. The replacement must have suitable voltage and breaking-capacity ratings, compatible protection characteristics, and the correct mechanical and electrical interfaces.

Procurement and Maintenance Recommendations

When sourcing the Schneider Electric MVS25H, begin by identifying the complete catalog number rather than relying only on the family designation. This is particularly important because the MVS25H range includes different pole configurations, mounting arrangements, trip units, and operating mechanisms.

For used, refurbished, or surplus equipment, request clear photographs of the nameplate, trip unit, terminals, and mechanical operating mechanism. Confirm the product’s condition, test history, included accessories, and applicable warranty or return terms.

For replacement projects, compare the existing breaker with the proposed unit in terms of rated current, breaking capacity, pole count, mounting arrangement, trip-unit functions, and switchboard dimensions.

Routine maintenance should follow the manufacturer’s instructions and the site’s electrical maintenance program. Inspection may include checking the mechanical operating mechanism, contact condition, electrical connections, insulation condition, trip-unit functions, and accessory operation.

Because the MVS25H is a high-current protective device, inspection and testing should be carried out by qualified personnel using suitable procedures and test equipment. Record maintenance results and protection settings to support future troubleshooting and replacement planning.

Conclusion

The Schneider Electric MVS25H EasyPact air circuit breaker is a 2500 A-class low-voltage protection device designed for industrial and commercial power distribution systems. The series supports operating voltages up to 690 V AC and provides H-class short-circuit breaking capacity of up to 65 kA at 220–440 V AC.

Its electronic trip-unit architecture and range of mounting and operating configurations make it suitable for a variety of distribution applications. However, MVS25H is a family designation rather than a complete order reference. Buyers and maintenance engineers should confirm the exact catalog number, pole configuration, trip-unit version, and mounting arrangement before purchasing or installing the breaker.