Scientific Technologies, Inc. offers a variety of tongue operated interlock safety switches, including: T5009 & T5009-6 Universal, T4016 Heavy Duty, T2008 Small, and D4NS Door. Switches have the following features: NEMA 6/IP67 rugged enclosures, 2 to 4 contact poles, rotatable heads, stainless steel actuators, blanking plugs, a small swing radius, etc. Other switch configurations offered by Scientific Technologies includes: rope pull, non-contact, guard door, hinge operated, limit type, E-stop, etc.

Allen-Bradley offers tongue safety interlock switches in Elf, Cadet, Trojan, and MT configurations. Cadet 3 tongue-operated safety interlock switches are easy to install, they have eight possible actuator entry points, IP67 sealed enclosures, and operating temperatures ranging from -20 to +80°. These switches are constructed from stainless steel and UL approved, glass-filled PBT.

EE Controls offers Keyed Safety interlock switches in regular duty (plastic body) and heavy duty (metal body) configurations. SKT interlock regular duty switches have a 2" minimum closing radius "MRU" key, temperature ranges from -22 to 176°F, a NEMA 4/12 enclosure, a 10 mA current rating, 10 mechanical operations, and a positive opening N.C. contact.

Honeywell Sensing and Control offers a variety of key operated safety interlock switches, including: GKS Series Multi-Entry Trapped, GKN Series Slow Action, GKM Series Miniature, GKE Series Dual Entry, and GK Series Snap Action. GKSA46LA2 Multi-Entry Trapped switches come with silver contacts, a glass-filled polymer housing, 0.5" conduits, 24 VDC solenoid ratings, schemes with power-to-lock/unlock, and operating temperatures ranging from -13 to 122°F. Switches have applications for the transportation, medical, industrial, aerospace, and military industries.

Schmersal, Inc. offers a variety of keyed interlock switches. AZ 15 keyed interlock switches have multiple codings, large wiring compartments, a high level of contact reliability, slotted holes for adjustment, circular holes for location, and they have a thermoplastic constructed enclosure. The actuator has a radius range from 35 to 150 mm, and it comes in angled, flexible, straight, rubber mounting, and rigid configurations.

IDEM Safety Switches offers tongue interlock switches in KM, KP, and IDIS-1 configurations. KM tongue switches feature red die cast metal housings. Housings have either an M20 conduit entry, or a 1/2" NPT IP67 enclosure protection. Contact options include: flat, standard, plastic flexible, heavy duty flexible, 2NC 1NO, 3NC, etc. QC, M20, and 1/2" NPT fittings are available.

Norstat, Inc. offers keyed safety interlock switches with multiple actuator configurations, including: straight key, 90 degree key, hinged key, double hinged key, and special hinged key. Switches have a maximum operating frequency of 3,600 cycles per hour, a 600 VDC maximum voltage rating, a temperature range from -25 to +80 degrees C, and a mechanical endurance of 1 million operations. Switches are made from glass-reinforced polymer materials.

Omega Engineering, Inc. offers safety key interlock switches with a tough plastic construction and critical stopping power. Switches allow temperatures ranging from -22 to 158°F, they have an operating speed range from 0.04 to 20 inches/second, and a rated insulation voltage of 400 V. Switches have NEMA 4, IP65, and IEC 529 enclosure ratings.

Castell offers keyed mechanical interlock switches in the following configurations: multiple key claw, single key claw, multiple key bolt, single key bolt, and switchgear. FS switchgear interlock switches can handle temperatures ranging from -40 to 107°C, they are panel mounted, and are constructed from brass/stainless steel/nickel plated materials. MTTF certification is available upon request.