20A USONIC Overload Switch Code: 99223715

A 20A Usonic overload switch is a manual-reset thermal circuit breaker designed to protect electrical devices from overcurrents. When current exceeds 20 amps, the internal mechanism trips to cut power, preventing overheating or equipment damage.

Key Specifications

• Rated Current:20 Amps
• Voltage Rating:125V to 250V AC / 50V DC
• Reset Type:Manual Push-Button
• Contact Type:Normally Closed (NC)
• Mounting:Usually threaded for a 10mm/0.4-inch diameter panel hole

How It Works

1. Protection:It monitors the current flowing through your appliance or circuit.
2. Tripping:If the current draw exceeds 20A, the internal bimetallic strip heats up, bends, and breaks the circuit.
3. Resetting:Once the issue is resolved and the unit cools down, you simply push the button back in to restore power.

Common Applications

• Power strips and surge protectors
• Air compressors, generators, and battery chargers
• Power tools and small workshop machines
• Marine and automotive control panels
• DIY electronics and branch line equipment protection