MONITORING DEVICES Voltage Monitoring Series SM 175 SM 301 SM 500 SM 501 Product Selection Chart: Voltage Monitoring Three Phase Indicator Frequency Monitoring Series PD 225 Current Monitoring Series Earth Leakage Relay Series CMR CMR - Current Control Temperature Monitoring Series PTC Thermistor Relay Series PD 225 PTC Thermistor & Single Phasing Preventer Series PD225 Equipment Room Temperature Control Relay Level Monitoring Series Liquid Level Controller 131Voltage Monitoring Series SM 175 Compact 17.5 mm Wide Protects against Phase Loss, Phase Reversal & Phase Asymmetry Multi-Voltage: 3 x 208 to 3 x 480 V Selectable Under Voltage / Over Voltage & Asymmetry LED Indication for all Faults & for change in settings during run time for better security Adjustable Time Delay 1 C/O Configuration Ordering Information Cat. No. Description MN21D5 208 - 480 VAC, Phase Loss Monitoring, 1 C/O MK21D5 208 - 480 VAC, Phase Loss, Phase Sequence Monitoring , 1 C/O MC21D5 208 - 480 VAC, Phase Loss, Phase Sequence, Phase Asymmetry Monitoring (30% Fixed), 1 C/O MA21DN 208 - 480 VAC, Phase Loss, Phase Sequence, Phase Asymmetry Monitoring (5% to 15% Variable), 1 C/O MOF1D51 208 - 480 VAC, Phase Loss, Phase Asymmetry Monitoring (10% Fixed), with trip time < 65 ms, 1 C/O 132
