100 A MCB

MCB or Miniature Circuit Breaker is a safety device installed to offer protection from electrical hazards in domestic, industrial and commercial settings. It is an electrical switch that automatically shuts down in case of short circuits, overloads or faulty design. The 100 amp MCB is suited for commercial settings with its capability to handle heavy electrical loads used in businesses.

Description of 100 A MCB

The MCB 100 A can handle the maximum 100 amperes of current flow before tripping. These devices are available as per the different pole and curve requirements. The varying poles include single, double, three or others. The poles in MCB refer to the number of wires or circuits that the MCB can protect simultaneously. Further, the 100 A MCB is available in different types of curves, such as B, C and D. These are indicative of circuit break speed depending on the current flow. The MCB involves compliance with IS or IEC standards. The MCBs are also equipped with red and green indicators stating their ON/OFF status.

Features of 100 A MCB

The different features of 100 A MCB to consider when going to purchase 100 amp MCB include the following:

• Rated current, voltage, voltage type and frequency

The maximum rated current is 100 amperes, making it suitable for high-load applications. The generally suited voltage type is AC, owing to its supply. Further, the range varies from 240V to 415V. Similarly, 50Hz is the standard frequency rating for MCB.

• Breaking capacity

These vary depending on the application and can be 6kA, 10kA or higher. It refers to the maximum quantity of short circuit current that can be safely interrupted without damage.

• Rated insulation voltage Ui

This indicates the maximum possible voltage that an MCB can withstand under normal operating conditions. It varies from 440V to 1000V.

• Mounting type

It can be a DIN rail-mounted, panel-mounted or plug-in-mounted.

• Number of poles

The MCBs are available in single, double, three, and four-pole configurations. Their requirements depend on the phase requirements and also contribute to the variation of the 100 Amp MCB price list.

• Curve characteristics

There are three curves, B, C, and D. The B curve trips at 3 to 5 times the rated current for resistive loads, the C curve trips at 5 to 10 times the rated current for indicative loads, and the D curve trips at 10 to 20 times the rated current for high in-rush current loads.

• Terminal capacity

It refers to the maximum coss-sectional conductor area possible to be connected to MCB’s terminal. Generally, it is up to 35 square millimetres.

• Electrical and mechanical life in terms of cycles

Electrical life indicates the number of operations that can be performed under load. Mechanical life initiates the total number of operations possible for MCB without an electrical load.

• Standard approval

The MCB 100 A generally complies with IEC and EN standards, which also influence 100 Amp MCB price.

• Warranty

The warranty period helps claim the guarantee of MCB against defects in material or manufacturing. You can check the warranty on the printed details.

Installation and Maintenance Tips For 100 A MCB

For the installation of 100 A MCB, here is what to do:

• The first thing to do is cut off the main supply
• Proceed to identify the available MCB slot in the panel and then align the MCB to fit in properly. Having the size information beforehand is crucial to get the right device.
• Now, securely connect MCB to the bus bar and double-check the wire connections.
• Follow electrical codes and ensure the tight and correct placement of connections. It will prevent overheating or short circuits.

The maintenance of 100 A MCB will require performing the following actions and tests to identify its current state and future capacity:

• It involves visual and mechanical inspection to look for issues like loose connections, overheating, rust, physical damage, presence of water or others. Smell or signs of burning should also be checked. Also, ensure that ground fault trips and auxiliary features are operating properly. Take immediate action in such scenarios.
• You can perform different tests such as:
  • You can perform different tests such as:
  • Overload tripping test to check breaker’s response to overload condition
  • Ground-fault trip test to assess the breaker’s protection against ground faults
  • Dielectric strength test for oil circuit breakers to assess their insulation
• Perform the insulation resistance testing to evaluate the quality of the insulation material and determine if it degrades over time. Here, the high values indicate healthy insulation, while the low values indicate degradation.
• Also, contact resistance testing should be conducted to assess the resistance across electrical contacts. The high resistance states faulty contacts and hence the requirement of immediate intervention.
• Carrying out the over-potential test contributes to identifying moisture or contaminants by passing a high DC voltage across the insulation system.
• Perform timing test to ensure breaker operates within manufacturer specifications.
• Go for regular cleaning to quickly and periodically remove the buildup of dirt and dust that could impair breaker performance.

Buy 100 A MCB in Wholesale at L&T-SuFin

Being updated and active with electrical safety can offer protection from multiple hazards such as fires and issues due to current. 100 A MCBs are the perfect option for reuse and are suited for commercial settings. You can opt to buy 100 A MCB online from L&T-SuFin to meet the need to buy 100 A MCB in bulk. Offering the best 100 A MCB from top brands and appropriate 100 A MCB price, we cater to the specific demands of our customers by offering impressive discounts. Sounds unbelievable? Request a quote now to compare for yourself.

FAQs

What is the breaking capacity of 100 A MCB?

The breaking capacity of 100 Amp MCB ranges from 6 to 25 kA.

What is a 100 A MCB used for?

The MCB 100 A handles heavy electrical devices to protect electrical circuits when they draw high currents.

What type of loads can be protected by a 100 A MCB?

It can protect up to 80 Amp of continuous load and 100 amp of non-continuous load.

How do I reset a 100 A MCB after it trips?

After the 100 A MCB trips, find the breaker in the electrical panel and push the handle to the OFF position, followed by switching to the ON position.

How long does a 100 A MCB last?

It can last for 10 to 20 years under normal operating conditions.