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Details Product Specs
Only specifically listed (with the brand and models that we carry) for the Rancilio Classe 5 single groups and the Classe 7 S and Leva models. They are also apparently used in Bianchi and Fiemma equipment.
This is a commercial pressurestat for 110~120/220~240V equipment. It is the part that regulates your boiler heating via a diaphragm that expands and contracts as the boiler steam pressure raises and lowers, activating the contacts and sending a signal to the heating element telling it to turn on or off. This is the three-pole version, model P303T01. One of the major differences with this version compared to others is the lower amperage rating. This switch can only function with 20 amps or less! Additionally, the wiring on this version is connected through the top portion of the switch. There's a snap-on lid with two press-in tabs on the upper sides of the cover. Rancilio #34200109.
Factory specification sheet here.