Robust 22-mm heavy-duty metal key selector switches are available in several combinations: two or three pole, momentary, or maintained. They can be keyed alike or different, and to enhance security, several types of key-removal options are available.

The watertight switches have been tested to meet NEMA-Type-4X, 12, and IP65, and are UL508 and CSA recognized.

Housed in heavy-duty metal, the units easily mount in a 22-mm mounting hole — the only tool needed is a screwdriver. The metal mounting bracket is vibrationproof and six different contact configurations are available.

The contact blocks have silver contacts for industrial applications, while gold plating is available for signal switching. They are rated for up to 10-A thermal current and have a mechanical life of more than 1 million operations.

Altech Corp., 35 Royal Rd., Flemington, NJ 08822, (908) 806-9400