Zener Diode Barriers include features for hazardous areas.
November 17, 2009 -
Offering both relay and solid-state switch models, MZB Series limits excess energy before it reaches hazardous area. Units feature removable terminals, bussed power feed, and channels as small as 6.3 mm wide. Each channel is fitted with 2 stages of pulse-tested Zener diodes and infallible terminating resistor. If electrical fault occurs in non-hazardous area of barrier, Zener diodes limit voltage available to hazardous area circuits, while series resistance limits current.
(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)
Original Press release
Turck USA
3000 Campus Dr.
Minneapolis, MN, 55441
USA
Zener Diode Barriers with Advanced Features for Hazardous Areas
Minneapolis, Minn.-TURCK introduces MZB series Zener diode barriers, designed to effectively limit excess energy before it reaches a hazardous area. The MZB barriers provide convenient removable terminals within an extremely efficient and space-saving design-with channels as small as 6.3mm wide-to consume minimal panel space. Additionally, the MZB series features a bussed power feed and offers both relay and solid-state switch models.
Each channel of the MZB Zener diode barriers is fitted with two stages of pulse-tested Zener diodes and an infallible terminating resistor. If an electrical fault such as an overvoltage occurs in the non-hazardous area of the barrier, the Zener diodes limit the voltage available to hazardous area circuits, while the series resistance limits the current. Within this circuit is a fuse designed to immediately and safely rupture if the excess energy continuously applied to the barrier exceeds the design criteria for the loop.
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