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What is Control Circuit Rating? It is found on 9012 pressure switches.

Control Circuit ratings are established by NEMA (National Electrical Manufacturers Association). These ratings are also recognized by UL and CSA as designated electrical ratings. By definition a control circuit is a circuit that carries the electrical signals directing the performance of a controller but which does not carry the main power. ie the use of an intermediate device such as a starter could be required.

In this rating scheme the numerical designation is the maximum voltage value, ie A600 is for up to 600 volts. Ratings A,B,C,D,E are AC ratings; N,P,Q,R are DC ratings.
Specifically A600 rating is
10 amp thermal continuous
120v: 60a make, 6a break
240v: 30a make, 3a break
480v: 15a make, 1.5a break
600v: 12a make, 1.2a break
Maximum VA: 7200 make 720 break

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