Unibody XA E-stop switches are available with 29 and 40 mm mushroom operators. They offer up to 4 contacts with safe-break technology, which uses spring-pressure to ensure NC contacts will open if switch is damaged or if contact blocks break off due to excessive force. IP65/IP40-rated units are available with engraved EMO markings, in 1NC and 2NC contact configurations, as well as with solder terminals in standard size or No. 110 terminals with gold-plated crossbar contacts.