MRC:
The designation that identifies the schematic diagram of the electrical configuration of the main nonpile-up contacts including the number of poles or forms.CRNG
Nonpile-up Main Contact Arrangement:
3 pole, single throw, normally open, double make, momentary action
MRC:
The designation that identifies the schematic diagram of the electrical configuration of the auxiliary nonpile-up contacts including the number of poles or forms.CSKP
Nonpile-up Auxiliary Contact Arrangement:
2 pole, single throw, normally open, double make, momentary action
