# REV ATO Auto-resetting Breakers
REV Robotics custom [ATO Auto-resetting Breakers](https://www.revrobotics.com/auto-resetting-breakers/) are designed to give reliable protection for FRC robot actuators. These custom developed breakers are ATO sized, adhere to SAE Standard J553, and will give consistent performance even after hundreds of breaker trips. A color-coded anodized aluminum case and stamped ratings allow for easy identification and inspection.
| SKU | Rating | Color |
| --------------- | ------ | ------ |
| REV-11-1860-PK4 | 10 A | Red |
| REV-11-1861-PK4 | 20 A | Yellow |
| REV-11-1862-PK4 | 30 A | Green |
| REV-11-1863-PK4 | 40 A | Orange |
#### **2026 Update:**
{% hint style="warning" %}
Our latest batches of 40A and 10A breakers have minor cosmetic differences (anodization, label printing, and slightly longer tabs). The internal circuit-breaking mechanism and performance curves remain unchanged.
Color of the label will remain the same: Orange for 40A and Red for 10A
{% endhint %}
### Circuit Breaker Trip Time Curves
Within the FRC community, there is a common misconception that circuit breakers are designed to trip exactly at a specified current value to protect the devices connected to your Power Distribution Hub. However, a more accurate description would be that circuit breakers are designed to trip at a specific temperature after a set amount of time to protect the electrical system from fire or other electrical hazards.
The current rating on a circuit breaker is the specification of the maximum current at which the circuit breaker is guaranteed not to trip. It is theoretically possible to see a 200% overload for greater than 1 second before it trips. Datasheets for the two most common breakers used with motors in FRC, the [40A REV Robotics ATO Auto-resetting Breakers](https://www.revrobotics.com/content/docs/REV-11-1860-1863-DS.pdf) and the 40A Snap Action MX5 Breakers, show the 40A breakers can see 80A flow through for a short period before they trip.
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