Installing substandard circuit breakers can cost you dear in the long run. An overcurrent or short circuit in your electrical circuit can damage your precious equipment and incur huge financial losses. In order to prevent damage to your devices you should install the ever-dependable New Siemens BF230A Ground Fault Circuit Breaker. When there is a fault in the electrical circuit this ground fault interrupter opens the circuit for an appropriate interval of time and stops the flow of current to your appliances. It is specifically designed to work with Siemens panelboards. These Siemens circuit breakers have a voltage and current rating of 120/240-Volt and 30-Ampere respectively. It has the following dimensions: Length 3.56" Width 2.00" and Depth 3.00".