This Switch Contact is a normally open (N.O.) dry conatct for use with the MC2SSW2A and S2SR-S3WA Selector Switch. This contact is rated for 10 Amps at 115 Volts AC and is UL Recognized. Several contacts can be snapped in place on the Selector Switch Contact Block Holder included with the MC2SSW2A switch (sold separately). Normally closed contacts are also available--please inquire.