These are UL approved 50 and 63-Amp versions of Zettler's current HVAC/R definite purpose contactors. They are made to switch heavy loads in elevators, cranes, hoists, and other products. They have UL-rated contacts of 25-63 full-load amps, up to 600V and 155C coils rated Class F in voltages at 50/60Hz. They come with a dust-proof construction, non-position sensitive mounting, a universal mounting plate, various termination options, heavy-duty contacts, and EE lamination for using less power, Zettler Controls Inc.http://rbi.ims.ca/4928-585
An in-depth survey of 700 current and future users of 3D printing holds few surprises, but results emphasize some major trends already in progress. Two standouts are the big growth in end-use parts and metal additive manufacturing (AM) most respondents expect.
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.