Mcb 12 Ampere Berapa Watt

3 min read Jun 26, 2024
Mcb 12 Ampere Berapa Watt

MCB 12 Ampere: How Many Watts Can It Handle?

When it comes to electrical circuits, understanding the capacity of your Miniature Circuit Breaker (MCB) is crucial. One common question that often arises is: "How many watts can an MCB 12 ampere handle?"

What is an MCB?

Before we dive into the calculation, let's quickly explain what an MCB is. An MCB, or Miniature Circuit Breaker, is a type of electrical device that automatically switches off the power supply when an overload or short circuit is detected. It's designed to protect electrical circuits from damage and prevent electrical shocks.

Calculating the Wattage of an MCB 12 Ampere

To determine the wattage that an MCB 12 ampere can handle, we need to consider the voltage of the electrical circuit. In most households, the voltage is 230V AC.

The formula to calculate the wattage is:

Wattage (W) = Voltage (V) x Current (I)

In this case, the current is 12 amperes, and the voltage is 230V AC.

Wattage (W) = 230V x 12A = 2760W

So, an MCB 12 ampere can handle up to 2760 watts of power.

What Does This Mean?

In practical terms, this means that an MCB 12 ampere can safely handle a load of up to 2760 watts. This is equivalent to:

  • 12-15 light bulbs (assuming 230V, 20W each)
  • 2-3 small refrigerators (assuming 230V, 800W each)
  • 1-2 air conditioners (assuming 230V, 1500W each)

Keep in mind that these are rough estimates, and the actual wattage capacity of your MCB may vary depending on various factors, such as the type of MCB, the quality of the electrical installation, and the ambient temperature.


In conclusion, an MCB 12 ampere can handle up to 2760 watts of power. It's essential to ensure that your electrical circuit is properly sized to handle the load, and that your MCB is rated for the wattage you need. Always consult a licensed electrician if you're unsure about the capacity of your electrical circuit.