These breakers come in two versions — one with magnetic trip element for short-circuit protection and the other with thermal and magnetic trip elements for overload and short-circuit protection. They can be used by themselves as manual motor controllers, and they also work well with Series 300 contactors in group motor installations. An ON/OFF manual operator makes it easy to isolate motor circuits without disconnecting all of a control panel's circuits. They have visual trip indicators for easy spotting of tripped circuits, and a test function for verifying device performance and proper control circuit operation. They have a modular design and come with accessories such as auxiliary contacts, shunt and undervoltage release modules, and wiring accessories. They come in universal ratings and markings: A, kW and HP ratings, plus applicable third-party certification markings.
Conventional wisdom holds that MIT, Cal Tech, and Stanford are three of the country’s best undergraduate engineering schools. Unfortunately, when conventional wisdom visits the topic of best engineering schools, it too often leaves out some of the most distinguished programs that don’t happen to offer PhD-level degrees.
Airbus Defence and Space has 3D printed titanium brackets for communications satellites. The redesigned, one-piece 3D-printed brackets have better thermal resistance than conventionally manufactured parts, can be produced faster, cost 20% less, and save about 1 kg of weight per satellite.
A group of researchers at the Seoul National University have discovered a way to take material from cigarette butts and turn it into a carbon-based material that’s ideal for storing energy and creating a powerful supercapacitor.
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.