The 42M36-01-1-04S is a Series 42 multi-deck rotary switch designed for high-reliability applications. It is a military-qualified (MIL-DTL-3786/4) component featuring a single deck with one pole and four shorting-type positions, indexed at a 36° angle of throw. This switch is rated to carry 10 amps continuously and operates over a temperature range of -65°C to 85°C. Its rugged construction, using diallyl phthalate for the base and silver alloy for the contacts, makes it suitable for demanding military equipment, aerospace systems, and industrial controls where long-term reliability is essential.