MCB stands for miniature circuit breaker, which is a device that protects electrical circuits from overcurrent, short circuit, or overload. MCBs are commonly used in residential, commercial, and industrial applications to ensure the safety and reliability of electrical systems. It is an essential part of the solar system installation kit.

There are different types of MCBs available in the market, depending on the voltage, current, and number of poles. The most common types are:

ACMCB: This type of MCB is suitable for alternating current (AC) circuits. It can have one, two, or four poles, depending on the number of phases and neutral wires in the circuit. For example, a single-phase circuit requires a one-pole MCB, while a three-phase circuit requires a four-pole MCB.

DCmcb: This type of MCB is suitable for direct current (DC) circuits. It usually has two poles, one for the positive and one for the negative wire. This type of MCB is often used in solar power systems, battery chargers, or other DC applications.

When selecting an MCB for a circuit, it is important to consider the following factors:

Mcb rating: This is the maximum current that the MCB can handle without tripping. It should be higher than the normal operating current of the circuit, but not too high to avoid unnecessary delays in tripping. A general rule of thumb is to multiply the normal current by 1.25 to get the MCB rating. For example, if the normal current of a solar panel is 20 amps, then the MCB rating should be 25 amps.

Mcb price: This is the cost of the MCB, which may vary depending on the brand, quality, and features of the MCB. The price range of MCBs in India is between 300 to 1200 rupees, depending on the type and rating of the MCB. For example, a standard (not customized) 32-amp ACMCB may cost around 400 rupees, while a 16-amp DCmcb may cost around 600 rupees.

This is some of the fundamental information about MCBs that you should know before buying and installing them. Before proceeding, it’s a good idea to consult with a Loom solar engineer expert. They can assess your site, and energy needs, and provide you with customized recommendations and cost estimates for the installation. Additionally, they can guide you through the permitting process and help you take advantage of any available incentives or rebates for residential solar installations in your area.