Switch, rotary enclosed, Triple Pole, Double Throw (TPDT), OFF-LOAD 1-OFF-LOAD 2, 10 amps, 125 Volts AC, submersible to 15 feet. Type 1SR3B4 switch in a 4" round brass enclosure. Part Number M15743/5-002 per MIL-DTL-15743/5. Note: There is an error on the specification sheet for this switch. It incorrectly specifies a Type 1SR3C4 in Table I on page 9 of MIL-DTL-15743/5B. NSN 5930-00-296-5287 or NSN 5930-01-355-0394. There appears to be 2 NSNs assigned to this item.