The new bidirectional high-power thyristor is used because the current can reach 40 amps which solves the over-current problem caused by the resistance of the electric furnace wire being too small under cooling. 0-100% (220 volts 100-level adjustment... more
Best prices on Qualgear 40 ft high speed, Switches in Electrical Supplies online. Visit Bizrate to find the best deals on top brands. Read reviews on Home & Garden merchants and buy with confidence.