Precision contact switches

A complete family of precision contact switches, matching cable connectors and power amplifiers has been introduced for high-performance, high-actuation motion control applications. The devices deliver 40 millionths of an inch repeatability, and offer switching point accuracy of ±0.001mm in housings no larger than a paper clip. Activating forces from 30 to 250 grams can be defined for My-Com switches when ordering, and standard activating pin materials can be selected from ceramics, sapphire, ruby or stainless steel tips. The standard My-Com can be DC or AC operated, and versions with integrated NPN or PNP amplifiers are available for high-load DC applications. Three-wire units accept 5-30 VDC supply voltage and sink or source 50 mA load current. Baumer Electric Ltd, Southington, CT. Free info—Circle 185. www.RSLeads.com/?111df-185

Reed relays. Offered in single- and dual-in-line packages, these molded reed relays provide life expectancies up to 109 cycles switching 5 volts @ 10 mA (depending on contact form). Both SIL- and DIP-Series are offered with an internal diode and magnetic shields, and feature high-voltage versions (SIL also available in a current line sense model). Coils are rated at 2kW@12 VDC, with up to 4.25 KVDC breakdown voltage. MEDER Electronic Inc, Mashpee, MA. Free info—Circle 190. www.RSLeads.com/?111df-190

Hall-effect pushbutton. Designed as a SPST or 2PST momentary illuminated switch, the SW44158 suits most high-volume front panel applications. Installation requires just 1.7 in. of space behind the display panel. Electro-Mech Components Inc, South El Monte, CA. Free info—Circle 201. www.RSLeads.com/?111df-201

Rotary switches. This company’s Snap-Action rotary switches have continuous ratings ranging from 20 to 200A @ 600V, and are available with up to 4 positions and 12 poles. Features include double-wiping contacts and fully enclosed decks. Electroswitch Corp, Weymouth, MA. Free info—Circle 191. www.RSLeads.com/?111df-191

Pushbutton switch. These flush-mount switches in a choice of LED colors and voltages, use a simple two-piece adapter to allow installation in a standard 16mm round panel hole or a 5/8-in. square cutout. Contacts range from 100 µV/10 µA to 42V/100 mA. EAO Switch Corp, Milford, CT. Free info—Circle 192. www.RSLeads.com/?111df-192

Safety relay. The PNOZelog line of relays eliminates active mechanical switching found in other relays, increasing life span while reducing maintenance. Two microprocessors, which are also used in the semiconductor outputs, use different hardware and software systems to allow for continuous self-diagnosis and ensure safe functionality and reliable switching. LEDs signal faults and other information. Pilz Automation Safety LP, Farmington Hills, MI Free info—Circle 186. www.RSLeads.com/?111df-186

Machine safety switch. The Furtif AMX non-contact safety switch serves as a non-contact gate switch for machinery. The ultra-compact unit is designed with two independent, interactive coded electronic systems to ensure fail-safe operation. Norstat Inc, Rockaway, NJ. Free info—Circle 193. www.RSLeads.com/?111df-193

Power switch chip. The FSDH0165 power switch has a voltage-mode PWM controller and SenseFET (LDMOS) power switching element integrated into a single chip, and packaged in an 8-lead DIPH. Fairchild Semiconductor International, San Jose, CA. Free info—Circle 194. www.RSLeads.com/?111df-194

Tilt switch. The AccuSwitch dual axis tilt switch is based on a low-cost angle measurement sensor that combines two accurate clinometers in one package. Programmable switch points for both axes, along with open collector and polarity outputs for each axis, are featured. Applications include man lifts, recreational vehicle leveling, wheel alignment apparatus, pitch and roll measuring and material handling. Schaevitz Sensors, Hampton, VA. Free info—Circle 187. www.RSLeads.com/?111df-187

Switch magnets. A broad stock of magnets allows for better matching with this company’s reed switches. Varieties include sintered ferrite, SmCo and NdFeB, bonded NdFeB and Alnico types. Gentech International LTD, Girvan, Ayrshire, UK. Free info—Circle 195. www.RSLeads.com/?111df-195

Surface mount relay. Requiring 35% less board space than the similar 9200 series, the smaller 9290 series of relays also has an external magnetic shield to minimize interaction between relays grouped closely together. Coto Technology, Providence, RI. Free info—Circle 196. www.RSLeads.com/?111df-196

Washdown switches. Previously available in only non-flush-mount models, the efector m washdown product line now includes flush mount, M30 diameter and AC voltage switch units. The switch housing is 316 stainless steel, and the devices are temperature rated for 0-100ºC. M30 diameter switches have sensing ranges up to 22mm. DC versions are normally-open or normally-closed 3-wire PNP devices. ifm efector inc, Exton, PA. Free info—Circle 188. www.RSLeads.com/?111df-188

Miniature rockers. The Model 0815 miniature, single-pole rocker switch is available in lighted and non-lighted versions, and features ¼ in. quick connect terminals. Bezels are matte or glossy black, with gloss white or matte red or black rockers. McGill, Skokie, IL. Free info—Circle 197. www.RSLeads.com/?111df-197

Interlock switch. Suited to harsh environments, the T4011 heavy-duty safety switch features an all-metal NEMA 6 enclosure with a variety of stainless steel actuators. It readily adapts to many mounting configurations. Scientific Technologies Inc, Fremont, CA. Free info—Circle 198. www.RSLeads.com/?111df-198

Capacitive actuators. Suited for use in externally exposed environments such as traffic light systems or public information terminals, these actuators possess no mechanical parts. An adaptive function is incorporated to slow down response to water, dirt or EMC, avoiding unintentional actuation or functional failure. The switch is offered in a flush-mount style for 16mm holes, or a square “under glass” version. Schurter Inc, Petaluma, CA. Free info—Circle 189. www.RSLeads.com/?111df-189

Solenoid switch. This Electronic Solenoid switch uses circuitry to eliminate mechanical action and electrical arcing. It withstands heavy electrical loads and used in 12 or 24 VDC applications. Encapsulated construction adds protection. Cole Hersee Co, South Boston, MA. Free info—Circle 200. www.RSLeads.com/?111df-200