Hello, friends, I hope you all are doing great. In today’s tutorial, we will discuss the Difference Between MCB and MCCB. The basic difference between MCB and MCCB is that rating of MCB is eighteen hundred and the interrupt rating of MCCB is between ten thousand to two lac amperes. MCB used to handle fewer value loads and MCCB used to handle large-value loads due to high rating
In today’s post, we will have a detailed look at both MCB and MCCB and compare them to discuss their differences. So let’s get started with the Difference Between MCB & MCCB.
Difference Between MCB & MCCB
MCB
- MCB is type of circuit breaker that provides protection to the system from high-value current when a load of high range connected to circuitry
- The full form of MCB is Miniature Circuit Breaker.
- It is configured like a switch when open manual way and close through this process
- Its rating current should be less than one twenty five ampere
- It works for overloading conditions not good to use to control surges and high starting currents existing at the motors.
- Its design is such that can control short circuitry errors and then reside for 2.5 ms
- the commons types of MCB are B, C, and D
- Its common applications are lightning circuits and less current-consuming loads.
- It is mostly used in homes.
- It can handle faults that occur due to overloading short circuitry
How Circuit Breaker Works
- The operation of all types of the circuit breaker is the same. The circuit breaker sens situation occurs due to faults occurring in the circuitry.
- In case of less value of voltage, this operation is done by the breaker. Generally heating fact of current is used.
- The circuit breaker in case of high voltage of current is generally configured to the relay to observe the fault in the circuit.
- There is certain power supply is needed like a battery, there is some breaker that are consist of CT, relay, and inner power sources
- After detection of the error circuit breaker connections should be opened for interruption of circuitry it is normally occurs through energy stored in the breaker like due to spring.
MCCB
- This circuit breaker provides protection to the components of the system from high temperatures and faulty currents.
- The full form of MCCB is Moulded case circuit breaker.
- Its rating value of sixteen hundred
- It is used in such a circuit that used a large amount of current.
- It is mostly used in buildings and industries.
- There is a temperature-detecting module linked to this brake that detects temperate when a fault occurs and trips the circuit.
Features of MCBs
- Compact size and modular design.
- Quick response time.
- Adjustable tripping configurations
- Thermal and magnetic trip mechanisms.
- Installation and replacement is easy
Applications of MCBs
- Industrial facilities.
- Residential electrical installations.
- Commercial buildings and offices.
- Motor control centers.
- Lighting circuits.
Advantages of MCBs
- Cost-effective circuit protection device.
- High-speed restoration of power after a fault.
- Modular design allows for easy expansion or modification.
- Different range of available current ratings.
- Enhanced safety due to automatic tripping.
Limitations of MCBs
- less breaking capacity than MCCBs.
- High fault currents can’t be handled.
- Vulnerability to annoyance tripping under specific circumstances.
- Heavy-duty industrial applications are not appropriate.
Features of MCCBs
- A strong structure with a molded casing for increased toughness.
- To handle large fault currents with high breaking capacity.
- Tripping features that can be varied to fulfill particular application needs.
- Magnetic and thermal trip units for precise and dependable functioning.
- Integrated accessories for extra features like shunt trips and Undervoltage releases.
Applications of MCCBs
- Panels for distributing power in factories.
- Server rooms and data centers.
- Structures that are large for businesses.
- Heavy machinery and tools.
- Chemical plants and oil refineries are examples of process industries.
Advantages of MCCBs
- Good fault protection with higher breaking capability.
- robustness and dependability.
- Comes with features to manage heavier electrical demands.
- Trip settings that may be configured for exact circuit protection.
- The wide variety of attachments for cutting-edge functions.
Limitations of MCCBs
- MCBs are more costly since they are more durable and have a larger capacity.
- Larger and bulkier, possibly needing more installation positions.
- Due to their enormous capacity, less good for domestic or low-power applications.
MCB vs MCCB
| Point | MCBs | MCCBs |
|---|---|---|
| 1. Full Form | Miniature Circuit Breakers | Molded Case Circuit Breakers |
| 2. Application | commercial, Residential, light industrial | commercial, Industrial, and heavy machinery |
| 3. Breaking Capacity | Limited, best for low-to-medium loads | Higher, good for high-power industrial loads |
| 4. Current Ratings | Limited range available | Wide range available, high current ratings |
| 5. Trip Mechanism | Thermal and magnetic | Thermal and magnetic |
| 6. Design | Compact and modular | Robust, with a molded casing |
| 7. Size | Small and more compact | Bulkier |
| 8. Fault Current Handling | Limited capability | Good for handling higher fault currents |
| 9. Customization Options | Limited options | Wide range of accessories and customization capabilities |
| 10. Cost | Less cost compared to MCCBs | High cost compared to MCBs |
| 11. Space Requirement | It nned less physical space | it need more physical space |
| 12. Nuisance Tripping | More prone to nuisance tripping in certain cases | Less prone to nuisance tripping |
| 13. Suitable for Residential Use | Yes | Not typically recommended due to higher cost and capacity |
| 14. Suitable for Industrial Use | Limited suitability | Highly suitable |
| 15. Breaking Time | Faster tripping time | Slightly longer tripping time |
| 16. Suitable for Motor Control | Yes | Yes |
| 17. Available Accessories | Limited accessories available | Different range of accessories for enhanced functionality |
| 18. Voltage Ratings | Fewer voltage ratings available | High voltage ratings |
| 19. Ease of Replacement | Easy to replace | It need professional assistance for replacement |
| 20. Widely Used in | Residential and light commercial applications | Industrial and heavy-duty commercial applications |
So it is a detailed post about the difference between MCB and MCCB if you have any queries ask in the comments. thanks for reading. Have a good day.
