15A USONIC Overload Switch Code: 22700815

A 15A Usonic overload switch (commonly found on power strips, air compressors, and motors) is a combination ON/OFF switch and a miniature thermal circuit breaker. If the current exceeds 15 Amps, the internal bimetal strip heats up and trips the switch, disconnecting the power to prevent damage.

Key Specifications

• Rated Current:15 A
• Rated Voltage:AC 125V / 250V; DC 32V / 50V
• Reset Type:Manual Push-button (typically pops out when tripped)
• Reset Time:Usually requires 1 minute to cool down before it can be reset
• Electrical Life:Up to 10,000 cycles

Common Applications

These switches are primarily designed to protect equipment and extension cords from drawing too much current and overheating. Typical uses include:

• Extension cords and heavy-duty power strips
• Small motors, generators, and transformers
• Air compressors and power tools
• Heating elements and solar water heaters

How to Use & Troubleshoot

1. Tripping:If your connected device stops working and the switch button is extended outward, the circuit has likely tripped due to an overload (e.g., too many tools plugged in at once).
2. Resetting:Turn off or unplug the connected devices, wait 1–2 minutes for the bimetal strip inside to cool down, and firmly press the button back into its starting position.

If you are looking to replace or purchase one, you can find various models on e-