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PLEASE NOTE: Type A and B (according to IEC 60755) refer to the following: Type A refers to systems running on AC or pulsed DC power. Type B refers to systems running on AC, pulsed DC, and/or pure/rectified DC power, such as systems running variable frequency drives.

Part Name System Type IEC60755 Type Supply Voltage Supply Freq. Response Values Number of Channels Response 1 Response 2 Rated Frequency Response Time Resp. Delay, Prealarm Resp. Delay, Alarm Starting Delay Delay on Release Interface Relay, Prealarm Relay, Alarm Displays Power LED Alarm LED Display Type Design CTs External / Internal Usable CT Connection Monitor General Features Buttons Fault Memory Memory History Approvals Datasheet

RCMA420 B AC 16 - 72 V; DC 9.6 - 94 V; AC/DC 70 - 300 V 40 - 400 Hz 1 50 - 100% of Alarm 10 - 500 mA 0 - 2000 Hz <= 180 ms, <= 30 ms 0 - 10 s 0 - 10 s 0 - 10 s 0 - 99 s No 1 SPDT contact 1 SPDT contact Yes Alarm 1, 2 Seven segment Digital Exterior W20AB, W35AB, W60AB Yes TEST, RESET, MENU Selectable Yes UL, GOST

Ordering Information

Part Name

Ordering Number

Setpoint Range

Supply Voltage

RCMA420

RCMA420-D-1 10 mA - 500 mA AC 16-72 V, DC 10-94 V RCMA420-D-2 10 mA - 500 mA AC 70-300 V, DC 70-300 V