Keylock Switches are bushing mounted.
Press Release Summary:
Low- and medium-security Series SK switches have 12 mm dia bushing and are constructed with behind-panel dimension of 1.063 in. Crisp and positive detent mechanism ensures accurate switch settings. Dielectric strength of 1,500 V between contacts and case delivers reliability with mechanical life of 30,000 operations (min) and electrical life of 10,000 operations (min). Devices are available in SPDT circuit configurations as 2- or 3-position models.
Original Press Release:
NKK Switches Announces SK Series of Bushing-Mounted Keylock Switches
Scottsdale, Ariz. (November 11, 2003) - Advancing design in switch technology, NKK Switches' extensive offering of keylock switches now includes the SK series of bushing-mounted, low and medium security keylock switches.
The SK series is a cost-effective, high-quality array of devices engineered to deliver the right product for applications requiring security features.
The SK series of bushing mount keylocks features a 12mm diameter bushing for standard panel openings, which also allows for high-density mounting. These miniature keylocks are constructed with a short behind-panel dimension of 27mm(1.063"), making them ideal for applications with limited space. Their crisp and positive detent mechanism ensures accurate switch settings. In addition, the SK series' high dielectric strength of 1,500 volts between contacts and case, delivers reliability with a mechanical life of 30,000 operations minimum and an electrical life of 10,000 operations minimum.
SK series devices are available in single-pole, double-throw circuit configurations, and engineers can specify two or three position models, with keys removable in one, two or all three positions. Contacts are non-shorting (break before make). The two position, ON ON models have 90° indexing between settings. The three position, ON OFF ON models have 45° indexing.
Low security versions of the SK series are rated 3A @ 125V AC and 1A @ 250V AC, and are UL recognized and CSA certified. The keys and tumbler barrel are constructed of zinc alloy with a matte chrome finish. Each switch is supplied standard with two keys, and additional keys can be ordered separately.
Medium security SK devices are rated 3A @ 125V AC and are UL recognized. Tumbler barrels are zinc alloy with a shiny chrome finish, and keys are brass with shiny nickel plating. The switches are supplied with one key each for security purposes, and additional keys can be ordered by indicating the key number that is engraved on the face of the switch.
The SK series of low and medium security switches feature a dust resistant interior construction to protect the contacts. The solder lug terminals are epoxy-sealed to prevent the entry of flux and other contaminants, which may compromise the integrity of the contacts. The operating temperature rage is -25°C through +70°C (-13°F through +158°F).
A leading designer and producer of electromechanical switches, NKK Switches offers one of the industry's most extensive selections of illuminated, process sealed, miniature, specialty and surface mount switches. The company manufactures more than three million toggle, rocker, pushbutton, slide, rotary, DIP rotary, keypad and keylock switches. NKK Switches maintains a complete network of qualified representatives and distributors through the United States, Canada, Central and South America, Europe and Asia.
For more information, contact NKK Switches, 7850 E. Gelding Dr., Scottsdale, AZ 85260. Phone 480-991-0942. Fax 480-998-1435. Or visit the NKK Switches Web site at www.nkkswitches.com.
