Product Overview

The Schneider Electric MVS16H Circuit Breaker is an industrial air circuit breaker (ACB) from the EasyPact MVS product family. Designed for low-voltage power distribution systems, it provides circuit protection, switching, and electrical isolation functions in industrial facilities, commercial buildings, and large electrical distribution installations.

Air circuit breakers are commonly installed in main distribution boards, power control centers, and low-voltage switchgear assemblies. They help protect electrical systems against abnormal current conditions, including overloads and short circuits. By interrupting the electrical circuit when a detected fault exceeds configured protection limits, an ACB helps reduce the risk of equipment damage and electrical system disruption.

The MVS16H is associated with a 1600 A rated-current frame. Depending on the complete breaker configuration, it can be supplied with different trip units, operating mechanisms, and installation arrangements. The EasyPact MVS16H family supports applications with rated operational voltages up to 690 V AC at 50/60 Hz. Its H breaking-capacity class is associated with a 65 kA breaking-capacity rating under the specified voltage conditions.

The breaker is designed for industrial distribution applications where reliable switching and coordinated circuit protection are important. Its electronic protection options allow engineers to select protection characteristics according to the requirements of the electrical distribution network.

The supplied dimensions are 352 × 422 × 297 mm, and the listed weight is 40 kg. These values correspond to the manufacturer’s published dimensions and net weight for the relevant MVS16H fixed-breaker configuration. Before purchasing, the complete catalog number should be checked because fixed and drawout versions, trip-unit configurations, and operating mechanisms may differ.

Technical Specifications

Important: MVS16H identifies a breaker family and frame rating rather than one complete orderable configuration. The exact trip unit, pole count, mounting arrangement, and operating mechanism must be confirmed from the full catalog number and nameplate.

Function and Working Principle

The Schneider Electric MVS16H is designed to control and protect electrical circuits in low-voltage distribution systems. Its operating principle combines current sensing, electronic protection logic where fitted, and a mechanical switching mechanism capable of opening the circuit under specified operating and fault conditions.

1. Overload Protection

An overload occurs when the current flowing through an electrical circuit remains above its normal operating level. Prolonged overload conditions can cause cables, busbars, motors, and other electrical components to overheat.

Depending on the installed trip unit, the MVS16H can provide long-time overload protection. The electronic trip unit monitors current and compares it with the configured protection threshold.

When the detected current exceeds the selected setting for the permitted time, the trip mechanism initiates circuit interruption.

Long-time pickup and delay settings allow engineers to coordinate the breaker with downstream protective devices and the characteristics of the connected electrical equipment.

2. Short-Circuit Protection

A short circuit can produce a rapid and substantial increase in electrical current. If not interrupted promptly, the resulting thermal and electromagnetic forces can damage switchgear, conductors, and connected equipment.

The MVS16H family provides short-circuit protection through its available electronic trip-unit configurations.

Depending on the selected trip unit, protection may include short-time and instantaneous functions. These functions allow the breaker to respond to different fault-current levels while supporting coordination with other circuit breakers in the distribution network.

3. Electronic Trip Unit

Electronic trip units monitor current and execute protection functions according to configured settings.

Depending on the selected version, the available protection functions may include:

• Long-time overload protection.
• Short-time short-circuit protection.
• Instantaneous short-circuit protection.
• Ground-fault protection on applicable configurations.
• Fault indication and diagnostic information.

Different EasyPact MVS16H variants may use different trip-unit types, including configurations with LI, LSI, or LSIG protection functions. These functions should not be assumed to be present on every breaker identified only as MVS16H.

4. Circuit Interruption

When a protection condition is detected, the breaker mechanism opens the contacts and interrupts the current.

The air circuit breaker uses an arc-extinguishing arrangement to manage the electrical arc generated during contact separation. The interruption process is designed to safely clear the fault within the breaker’s specified operating limits.

The breaker must be selected according to the prospective short-circuit current and system voltage at the installation point.

5. Electrical Isolation

The MVS16H can also serve as a switching and isolation device when the installed configuration and applicable operating procedures permit.

Isolation is important during maintenance, inspection, and equipment replacement. The breaker must be operated and verified according to the electrical safety procedures applicable to the installation.

Role in Industrial Power Distribution Systems

The MVS16H is typically installed in a low-voltage switchboard or main distribution assembly. It provides a switching and protection point between the incoming power source and downstream distribution circuits.

Main Incoming Circuit Protection

In industrial facilities, the main distribution breaker is responsible for controlling and protecting the incoming electrical supply.

A 1600 A frame-class breaker can be used in appropriately designed distribution systems where the load current and protection requirements fall within its ratings.

The breaker must be coordinated with the transformer, upstream protection, busbar system, and downstream circuit breakers.

Feeder Circuit Protection

The breaker may also be used in feeder distribution arrangements to protect power supplied to major electrical loads or secondary distribution boards.

Its protection settings should be coordinated with downstream devices to help isolate faults without unnecessarily interrupting unaffected sections of the electrical network.

Switchgear Integration

The MVS16H can form part of a low-voltage switchgear assembly containing busbars, metering equipment, protection devices, control circuits, and auxiliary components.

The exact mounting and connection arrangement depends on whether the selected breaker is fixed or drawout type.

Electrical System Maintenance

Circuit breakers are important components in electrical maintenance strategies. Their switching, isolation, and protection functions support inspection and service activities.

Maintenance personnel should follow the manufacturer’s inspection and testing requirements, including checks of mechanical operation, electrical connections, trip-unit settings, and applicable functional tests.

Industrial Applications

The EasyPact MVS16H family is intended for low-voltage power distribution applications where high-current circuit protection and switching are required.

1. Industrial Main Distribution Boards

Manufacturing plants and processing facilities often use main distribution boards to distribute electrical power to production lines, motor control centers, and auxiliary systems.

A 1600 A circuit breaker can serve as a main or sectional distribution protection device when its ratings match the electrical design.

2. Power Control Centers

Power control centers distribute electricity to motors, pumps, compressors, fans, and other industrial equipment.

The MVS16H can be used in appropriately rated assemblies to provide protection and switching for major power distribution sections.

3. Transformer Secondary Protection

Transformers supply electrical energy to low-voltage distribution networks. A circuit breaker installed on the transformer secondary side can provide protection and switching for the downstream system.

Selection requires careful consideration of transformer capacity, secondary voltage, prospective short-circuit current, and protection coordination.

4. Commercial Building Electrical Systems

Large commercial buildings require distribution systems capable of supplying elevators, HVAC equipment, lighting systems, pumps, and other substantial electrical loads.

An appropriately configured MVS16H can be used in main or sub-main distribution switchgear where its ratings and protection characteristics meet the system requirements.

5. Infrastructure and Utility Facilities

Infrastructure installations, water treatment facilities, industrial utility buildings, and other large electrical installations may require high-current low-voltage circuit breakers.

The MVS16H family can be considered for these applications when its electrical ratings, environmental limits, and installation requirements are satisfied.

Installation and System Integration

Correct installation is essential for electrical safety and reliable circuit protection.

1. Verify the Complete Product Configuration

Before installation, identify the full catalog number and confirm the breaker configuration.

Important details include:

• Rated current and voltage.
• Number of poles.
• Fixed or drawout mounting arrangement.
• Manual or electrical operating mechanism.
• Trip-unit type.
• Available protection functions.
• Rear connection arrangement.
• Auxiliary contacts and accessories.

The MVS16H family includes multiple configurations. The family designation alone is not sufficient for selecting a replacement.

2. Check Electrical Ratings

Confirm that the system voltage, rated current, frequency, and prospective short-circuit current are within the breaker’s specified limits.

The 65 kA breaking-capacity figure must be considered together with its corresponding voltage conditions. It should not be interpreted as a universal breaking-capacity rating at every voltage.

Engineers should also verify the insulation voltage, impulse withstand voltage, and short-time withstand requirements of the installation.

3. Mechanical Installation

The supplied dimensions are 352 × 422 × 297 mm, with a listed weight of 40 kg.

Before preparing the switchgear compartment, check the dimensional drawing for the exact breaker configuration. Allow sufficient space for mounting, rear connections, operating access, inspection, and maintenance.

Because the breaker is a heavy electrical component, suitable lifting equipment and approved handling procedures should be used during installation.

4. Busbar and Cable Connections

The electrical connection arrangement must match the selected breaker version and switchgear design.

Check busbar dimensions, connection pitch, conductor capacity, terminal condition, and tightening requirements. Incorrect connection work can lead to overheating, increased contact resistance, and equipment failure.

Follow the manufacturer’s installation instructions for conductor preparation and connection torque.

5. Protection Setting Configuration

The trip unit should be configured according to the electrical system study and protection-coordination requirements.

Important settings may include:

• Long-time pickup current.
• Long-time delay.
• Short-time pickup current.
• Short-time delay.
• Instantaneous pickup.
• Ground-fault pickup and delay, where available.

Do not use arbitrary settings. Protection parameters should be established by qualified electrical engineers based on cable ratings, load characteristics, fault-current calculations, and coordination requirements.

6. Commissioning and Functional Testing

Before energizing the switchgear, inspect the installation and verify the mechanical and electrical connections.

Commissioning should include appropriate checks of:

• Breaker mechanical operation.
• Opening and closing functions.
• Trip-unit configuration.
• Auxiliary contacts.
• Protection functions.
• Electrical interlocks.
• Indication and monitoring circuits.
• Connection integrity.

Testing should follow the manufacturer’s procedures and the applicable electrical safety standards.

Compatible System Components

The MVS16H is normally installed as part of a complete low-voltage distribution assembly.

Accessories and trip units are configuration-dependent and may not be included with every MVS16H breaker.

Alternative Models and Replacement Considerations

When replacing an MVS16H circuit breaker, the selection process should focus on the complete electrical and mechanical configuration rather than the family name alone.

Before selecting a replacement, check:

• Rated operational voltage.
• Rated current.
• Ultimate and service short-circuit breaking capacity.
• Short-time withstand current.
• Number of poles.
• Fixed or drawout construction.
• Trip-unit functions and settings.
• Manual or electrical operation.
• Auxiliary and control accessories.
• Physical dimensions and connection pitch.
• Switchgear compartment compatibility.

A breaker with the same 1600 A current rating may still be unsuitable if its breaking capacity, mounting arrangement, or protection functions differ.

Key Advantages

High-Current Distribution Capability

The MVS16H is designed for 1600 A low-voltage distribution applications, making it suitable for appropriately engineered main and feeder circuits.

High Breaking-Capacity Class

The H breaking-capacity class provides a specified high short-circuit interruption capability. The applicable rating must always be checked at the system operating voltage.

Electronic Protection Options

Available electronic trip-unit configurations support adjustable protection characteristics for different distribution-system requirements.

Flexible Installation Configurations

The EasyPact MVS16H family includes different installation and operating configurations, allowing selection according to switchgear design.

Industrial Switchgear Integration

The breaker is designed for use in low-voltage distribution assemblies containing busbars, feeder circuits, monitoring equipment, and other protective devices.

Maintenance and Diagnostic Support

Depending on the trip unit and installed accessories, the breaker can provide protection indications and operating information that support inspection and maintenance activities.

Technical FAQs

1. What is the Schneider Electric MVS16H?

The MVS16H is an EasyPact MVS air circuit breaker family designed for low-voltage electrical distribution and protection applications.

2. What is the rated current of the MVS16H?

The MVS16H is associated with a 1600 A rated-current frame.

3. What is the maximum operating voltage?

The EasyPact MVS16H family supports rated operational voltages up to 690 V AC at 50/60 Hz, subject to the specific configuration and applicable standards.

4. What is the breaking capacity of the MVS16H?

The H breaking-capacity class is associated with a 65 kA rating under specified voltage conditions. The exact Icu and Ics values should be checked against the full product configuration and operating voltage.

5. Does the MVS16H use an electronic trip unit?

Electronic trip-unit configurations are available. The exact trip-unit type and protection functions depend on the complete catalog number.

6. Is the MVS16H fixed or drawout type?

Both fixed and drawout configurations are available within the EasyPact MVS family. The complete model designation is required to identify the exact installation type.

7. What are the dimensions and weight?

The supplied dimensions are 352 × 422 × 297 mm, and the listed net weight is 40 kg. Confirm the exact configuration before using these values for switchgear design or transportation.

8. Can the MVS16H be used as a main circuit breaker?

It can be used in appropriately designed main distribution applications when its current rating, breaking capacity, protection functions, and installation requirements match the electrical system.

9. Can an MVS16H replace another 1600 A breaker?

Not automatically. Replacement requires checking voltage, short-circuit ratings, trip-unit functions, mounting arrangement, terminal connections, and accessories.

10. What should be checked when purchasing an MVS16H?

Confirm the complete catalog number, rated current, voltage, breaking capacity, pole count, trip-unit model, operating mechanism, mounting style, physical condition, and included accessories.

Procurement and Maintenance Recommendations

When sourcing the Schneider Electric MVS16H, buyers should confirm the complete product designation rather than relying only on the MVS16H family name. This is particularly important for replacement projects where the existing switchgear has a specific fixed or drawout arrangement and a defined trip-unit configuration.

For new, surplus, or refurbished breakers, request clear photographs of the nameplate, trip unit, operating mechanism, terminals, and accessories. Confirm the rated current, voltage, breaking capacity, and condition of the main contacts. For critical installations, request suitable inspection and functional-test documentation.

During maintenance, qualified personnel should inspect the operating mechanism, contact condition, connection points, insulation components, auxiliary circuits, and trip-unit settings according to the manufacturer’s maintenance requirements.

Protection settings should be documented and reviewed after changes to the distribution network. Any modification to the trip-unit configuration should be assessed for its impact on protection coordination and electrical safety.

For replacement planning, compare the complete mechanical and electrical configuration. A breaker with matching current ratings may still require changes to the switchgear compartment, busbar connections, control wiring, or protection coordination.

Conclusion

The Schneider Electric MVS16H EasyPact MVS Circuit Breaker is a 1600 A-class air circuit breaker designed for industrial and commercial low-voltage power distribution systems. Its H breaking-capacity class, electronic trip-unit options, and availability in different installation configurations make it suitable for a range of main and feeder distribution applications when correctly specified.

With supplied dimensions of 352 × 422 × 297 mm and a listed net weight of 40 kg, the MVS16H is a substantial switchgear component that requires appropriate mechanical support and installation planning.

For procurement, maintenance, and replacement work, the full catalog number is essential. Confirming the trip unit, pole count, mounting arrangement, operating mechanism, and electrical ratings helps ensure that the selected breaker matches the requirements of the existing distribution system.