On/Off switch with 16amp trip off current limit Suitable for 12v and 240v control panels The original 16A circuit breaker is now discontinued. Please see information below from the Sealine original equipment manufacturer: Please note the 3120-F thermal and thermal-magnetic circuit breaker has been replaced by the 3120-N successor model. Compared to the 3120-F, the 3120- N offers: Freely accessible rockers and push buttons for easy, reliable and convenient actuation, No equipment or machine downtimes through enhanced protection against dust and water ingress, provided by the globally unique accordion-style seal for the rocker-actuated version of 3120-N. Otherwise the breakers are interchangeable without problems thanks to the identical footprint and the same technical data. The only difference is cosmetic, with the edges being rounded rather than square (see photos). You could always file the plastic down should you require.