NKK Switches manufactures electromechanical switches including 10mm DIP, standard, half-inch diameter, miniature power level, miniature PCB and 8mm DIP rotary switches. Various rotary switches feature power levels up to 250mA, 10A and 30A, and can be bushing or PCB mounted. Logic levels include 100mA and 0.4 VA.

Alps Electric Inc. manufactures six series of rotary switches that feature 1/2 to 4 poles, and 2 to 10 positions. All but one of the company's rotary switches have a vertical operating direction. The various rotary switches feature ratings of 1mA 5V DC, 0.1A 16V DC, 0.3A 16 V DC, 0.25A 30V DC, or 0.15A 12 V DC.

Esterline Technologies Corporation manufactures five series of rotary selector switches including printed circuit, military, power, micro, and miniature types. Electrical ratings for each rotary switch type vary from 3 amps and 8 amps to 10 amps and 25 amps.

Cole Instrument Co. specializes in developing various rotary switches including subminiature, subminiature shaftless, half-inch enclosed, inertia, one inch multi-deck enclosed, open frame and miniature multi-deck rotary switches. The company's electromechanical switches are for commercial, military and aerospace applications.

Tyco Electronics designs and manufactures rotary switches that have 2, 3, 4, 5, 6, 8, 10, 12, 16, 24, or 32 positions. The various rotary switch code types include: 2 poles, 3 poles, 4 poles, BCD, BCD complement, BCD hexadecimal, BCO, hexadecimal, and single pole. The rotary switches also feature a number of different actuator styles.

Omega Engineering manufactures rotary selector switches in 3", 5" and 1/4 DIN sizes. The rotary switches feature 2 or 3 poles, 2 to 34 positions, and are used for isothermal, low resistance switching of temperature measurement controls.

All Electronics Corp. supplies rotary switches manufactured by Dreefs, Alpha, and Apem. The Dreefs rotary switch is an 8-position switch that is matrix encoded, while the Apem-brand switch is a miniature 16-position rotary switch. The Alpha rotary switch is a 12-position switch that is PC mount and features one pole.

EAO Switch Corp. manufactures six series of rotary switches including 3A, 5A, and 10A models. The various rotary switches feature snap-action or momentary switching elements, LED illumination, protection up to IP65 and IP67, and bevels for raised or flush mounting. The rotary switches are also modular, and can be modified with different lens shapes, lever lengths, colors, and materials.

Rockwell Automation manufactures Allen Bradley rotary switches that are available with four poles and can be mounted in a panel or purchased in an enclosure. Features of the company's rotary switches include 316L stainless steel keys, direct drive operation, and up to 400 A isolation. The switches have a mechanical life of 100,000 operations, and operating temperature of -10 through 40 C.

Shallco Inc. manufactures and distributes subminiature and open frame rotary switches. The 1/2-inch subminiature rotary switches feature a current carrying capacity of 3 amps, current switching capacity of up to 1 amp, and exceed the general requirements of MIL-S-3786/20 - a military specification. The subminiature rotary switches also feature a minimum rotational life of 25,000 cycles. The open frame rotary switches also meet military specificiations and can withstand moderate environments. These rotary switches feature a current carrying capacity of 10 amps and a current switch capacity of up to 2 amps.