Limit Energy to Hazardous Areas

Nov. 5, 2009
The MZB series of Zener diode barriers is designed to effectively limit excess energy before it reaches a hazardous area. 
The barriers feature a bused power feed and offer both relay and solid-state switch models. They provide removable terminals within a space-saving design—with channels as small as 6.3mm wide—to consume minimal panel space. Each channel is fitted with two stages of pulse-tested diodes and an infallible terminating resistor, says the vendor. If an electrical fault such as an overvoltage occurs in the non-hazardous area of the barrier, the 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. Turck Inc.www.turck.us800.544.7769

Subscribe to Automation World's RSS Feeds for Products

Sponsored Recommendations

Why Go Beyond Traditional HMI/SCADA

Traditional HMI/SCADAs are being reinvented with today's growing dependence on mobile technology. Discover how AVEVA is implementing this software into your everyday devices to...

4 Reasons to move to a subscription model for your HMI/SCADA

Software-as-a-service (SaaS) gives you the technical and financial ability to respond to the changing market and provides efficient control across your entire enterprise—not just...

Is your HMI stuck in the stone age?

What happens when you adopt modern HMI solutions? Learn more about the future of operations control with these six modern HMI must-haves to help you turbocharge operator efficiency...