Mcb 3 Phase 60 Ampere Berapa Watt

3 min read Jun 26, 2024
Mcb 3 Phase 60 Ampere Berapa Watt

MCB 3 Phase 60 Ampere: How Many Watts?


In electrical circuits, it's essential to understand the relationship between the current rating of a circuit breaker, such as an MCB (Miniature Circuit Breaker), and the power it can handle. In this article, we'll explore the calculation to determine the wattage capacity of an MCB 3 phase 60 ampere.

Understanding MCB Ratings

An MCB is a type of circuit breaker that protects electrical circuits from overload and short-circuit faults. The rating of an MCB is typically denoted in amperes (A) and indicates the maximum current it can handle without tripping.

In the case of a 3-phase MCB, the rating is usually specified in amperes per phase. For example, a 3-phase 60 ampere MCB can handle 60 amperes per phase.

Calculating Wattage Capacity

To calculate the wattage capacity of an MCB, we need to know the voltage of the circuit. Assuming a 3-phase circuit with a line-to-line voltage of 400V (which is a common voltage rating for industrial and commercial applications), we can use the following formula:

Wattage Capacity (W) = √3 x Line Voltage (V) x Current Rating (A)


  • √3 = 1.732 (a constant for 3-phase circuits)
  • Line Voltage (V) = 400V
  • Current Rating (A) = 60A per phase

Plugging in the values, we get:

W = 1.732 x 400V x 60A = 43,272 Watts


Therefore, an MCB 3 phase 60 ampere can handle a maximum power of approximately 43,272 watts. It's essential to note that this calculation assumes a pure resistive load and doesn't take into account other factors that may affect the MCB's performance, such as power factor, harmonics, and ambient temperature.

When selecting an MCB for a specific application, it's crucial to consider the actual load requirements and consult the manufacturer's specifications to ensure the chosen MCB can handle the required power safely and efficiently.

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