We’re excited to introduce a brand-new component to DCACLab — the Miniature Circuit Breaker (MCB) 
The MCB brings real-world protection behavior to your circuits by automatically disconnecting the line when the RMS current exceeds its rated limit.
This allows you to explore overload and protection concepts just like in real electrical systems — both AC and DC.
Key Features
- AC & DC Compatibility: Works with both current types, making it ideal for household, automotive, and solar simulations.
- RMS-Based Detection: Calculates true Root Mean Square current, ensuring accurate tripping that reflects real-life thermal and magnetic responses.
- Instant Visual Feedback: The breaker handle flips OFF and the indicator changes color when tripped.
- Multiple Ratings: Choose between 5A, 10A, 16A, 32A, and more for flexible protection design.
- Front & Top Views: High-detail graphics show ON/OFF states for easy visual learning.
Educational Value
Students can now observe how overcurrent conditions cause protection devices to operate, and understand why RMS current — not instantaneous or average — determines real-world safety thresholds.
Try it now:
Find the new MCB and see how your circuit responds to overloads in real time!