MTL7787+ IS BARRIER

	IS Barrier
	Limits Voltage to hazardous areas
	IS approved: limits current to hazardous areas
	Competitive cost

All MTL7700 Series barriers are based on the same simple principle. Each channel contains two stages of pulse-tested Zener or forward-connected diodes and an ‘infallible’ terminating resistor. In the event of an electrical fault in the safe area, the diodes limit the voltage that can reach the hazardous area and the resistor limits the current. A fuse protects the the diodes, and the two stages of voltage limitation ensure continued safety if either stage should fail. No active output-current limiting circuits are employed. The MTL7787+ is certified ‘ia’ for all zones and ‘IIC’ for all explosive atmospheres.