controllers feature thermoset bodies to provide high resistance to
electrical arc tracking and ac-rated silver alloy contacts for excellent
conductivity and extended life. The compact devices are available in NEMA 1,
3/3R and 4X enclosures; each controller has lockout/tag out capability.
Toggle ac manual motor controllers feature quick-make/slow break operation
to provide reliability and long life. Each toggle switch controller has a
10,000A high-fault short circuit withstand rating, excellent dimensional
stability and superior dielectric strength. Optional NEMA 1 enclosures without
switches, as well as side guards for close wall applications and finger-safe
environments are also available.
Single-phase and three-phase toggle controllers are available in 30, 40 and
60A sizes, up to 600V ac, and 2-pole and 3-pole configurations. Designed with a
clamping plate for back or side wiring, toggle switch type controllers start at
Available enclosed toggle ac manual motor controllers feature NEMA 1 or NEMA
3R enclosures. NEMA 1 metal enclosed switch controllers, ideal for use in
indoor environments, are designed with 1/2 and 3/4 inch NPT wiring conduit
knockouts. The all-aluminum cover and base are designed with top, bottom or
back wire entry points; the base is pre-drilled for rear surface mounting. NEMA
1 enclosed toggle controller prices start at $27.50.
NEMA 3R rain-tight enclosed toggle controllers are available in either all-aluminum
or chemical and impact resistant thermoplastic enclosures, making them ideal
for outdoor applications. The all-aluminum enclosure, with pre-drilled base for
rear surface mounting, is designed with Â½ inch NPT wiring knockouts for 30A
models; 60A models feature Â¾ and 1 inch conduit knockouts. NEMA 3R enclosed
toggle controller prices start at $40.
NEMA 4X enclosed rotary ac manual motor controllers, ideal for heavy
washdown and corrosive environments, feature impact and chemical resistant
thermoplastic enclosure bodies. An over-center rotary switching mechanism
ensures reliable operation and allows positioning of up to two N.O. / N.C.
auxiliary contacts. NEMA 4X enclosed rotary controllers start at $99.
What makes this movie stand out from the typical high school sports story is that the teenagers are undocumented immigrants, and the big game is a NASA-sponsored marine robotics competition. Like many other Hollywood movies, however, Spare Parts only tells part of the story. What the film shows -- and doesn’t show -- raises important issues affecting STEM education in the US.
Instead of sifting through huge amounts of technical data looking for answers to assembly problems, engineers can now benefit from 3M's new initiative -- 3M Assembly Solutions. The company has organized its wealth of adhesive and tape solutions into six typical application areas, making it easier to find the best products to solve their real-world assembly and bonding problems.
Load dump occurs when a discharged battery is disconnected while the alternator is generating current and other loads remain on the alternator circuit. If left alone, the electrical spikes and transients will be transmitted along the power line, leading to malfunctions in individual electronics/sensors or permanent damage to the vehicle’s electronic system. Bottom line: An uncontrolled load dump threatens the overall safety and reliability of the vehicle.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.