What is the difference between B Type and C Type MCB

What is the difference between B Type and C Type MCB?

What is an MCB?

An MCB (Miniature Circuit Breaker) is a safety device used to protect electrical circuits from overloads and short circuits. It trips automatically to disconnect the power when it detects a fault.

Now let’s understand the B Type and C Type MCBs.

B Type MCB

  • Trips when the current exceeds 3 to 5 times the rated current.
  • Ideal for setups with Resistive loads, like Light, Fans, Heaters, Iron, Microwave, Water Filter, TV, Hair Dryer etc.
  • Suitable where inrush current is low.

C Type MCB

  • Trips when the current exceeds 5 to 10 times the rated current.
  • Designed for setups with Inductive loads, such as Refrigerator, Air conditioners, Washing Machine, Mixer Grinder, etc.
  • Handles higher inrush currents without tripping unnecessarily.

Key Differences at a Glance

Feature

B Type

C Type

Tripping Range

3-5 times rated current

5-10 times rated current

Applications

Residential/light commercial

Industrial/commercial

Common Loads

Lights, heaters

Refrigerator, Air conditioners

How to Choose?

  1. Home Use: Go for B Type for standard appliances.

  2. Industrial Use: Opt for C Type for machinery and equipment with higher inrush currents.

Quick Tip:
Always consult your trusted professional electrician to pick the right MCB for your needs to ensure safety and efficiency.

Conclusion:

Both B Type and C Type MCBs are essential for safeguarding electrical systems, with no compromise on material quality. While B Type MCBs are tailored for standard appliances, C Type MCBs provide extra protection for devices with higher starting currents.

To ensure round-the-clock protection, trust Pressfit’s SFT1 MCBs, proudly made in India. With features like a high breaking capacity of 10kA and compliance with IS/IEC 60898-1 standards, they guard against overloads, short circuits, and potential fire hazards.

Choose Pressfit for reliability, performance, and peace of mind.
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