Raleigh, N.C. Stackpole Electronics, Inc. has introduced a single-layer metal oxide varistor (MOV) for protection against high current, high energy transients in distribution panels, surge arrestors, industrial motors, power supplies and controls. The new ZOV series is capable of handling up to 80 kA of current (8/20 microsecond) and more than 4100 watts in a single device.
The ZOV series MOVs operate in voltages that range from 60 to 680 Vrms in standard sizes from 23 mm to 60 mm. They are available in various models including round (ZOVR), square (ZOV), and dual- or triple-stacked (ZOVS), which can achieve higher current and energy handling capabilities, said the company. The ZOV and ZOVR devices are UL and CS approved.
The ZOV series is available with epoxy coating, rigid terminations or with metallized blocks, which makes it suitable for soldering or pressure contacts. As with all of Stackpole's varistor products, the ZOV series has a flat to slightly positive temperature coefficient for its clamping voltage. This feature ensures that the device will clamp at the stated clamping voltage and prevent the part from failing due to current overload, said the company. Custom specifications are available to meet the requirements of a unique application.
Prices range from $1.50 to $5.00 each. Typical delivery is eight weeks for production quantities. Samples are available now.
Stackpole Electronics Inc., 1-919-850-9500, www.seielect.com