B220

The Siemens B220 circuit breaker is categorized as a thermal-magnetic device, vital for ensuring safe operation in electrical circuits. Constructed as a 2-pole breaker, it effectively handles a rated current of 20 Amps and operates at a voltage of 120 Volts AC. One of the significant features of this breaker is its ability to interrupt faults with a capacity of 10kA, providing robust protection against potential system issues.

This unit employs a trip curve classified as Type B, which is designed specifically for environments where moderate inrush currents may occur. Operating at a frequency of 60 Hz, this breaker integrates a trip mechanism that combines thermal protection for overload scenarios and magnetic action for short circuit situations, ensuring reliable responses to various fault conditions.

For installation, the B220 offers a plug-in mounting design, facilitating straightforward integration into electrical panels. Its terminal configuration is screw-type with box lugs, allowing for secure connections to the circuit. The terminal torque specification is set at 2.8 Nm, ensuring tight connections that maintain electrical integrity over time.

This thermal-magnetic circuit breaker is rated for an operating temperature range of -40°C to +70°C, allowing it to function effectively in extreme conditions. It is designed for use with wire sizes of 14 AWG. The unit is meant for vertical mounting, which contributes to space-saving in electrical distribution systems. Its common internal trip feature, accessible via a toggle handle, allows for simplicity in operation and management.