PR-300 Polarity Reversal City Tie Module. The PR-300 Polarity Reversal/City Tie Module provides the system with a supervised City Tie via a 24 VDC/200 mA maximum and polarity reversal connection via a 24 VDC (open circuit), 8 mA maximum
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The PR-300 Polarity Reversal/City Tie Module provides the system with a supervised City Tie via a 24 VDC/200 mA maximum and polarity reversal connection via a 24 VDC (open circuit), 8 mA maximum (shorted).