The MRK112 is a half-inch diameter, process-sealed rotary switch with 1 pole and 12 positions, featuring a self-cleaning rotary contactor disk and break-before-make contact timing. It has a maximum electrical capacity of 0.4VA at 28V AC/DC, contact resistance of 50 milliohms maximum, and an insulation resistance of 100 megohms minimum. The switch meets IP67 protection standards per IEC60529, operates from -10°C to +70°C, and has a mechanical life of 30,000 operations. It uses phosphor bronze with gold plating for contacts and terminals, and is designed for PCB mounting with a 30° indexing angle. The mounting torque is 0.686Nm, and it includes a polyamide cover for sealing. The shaft is brass with nickel plating, and the housing is zinc alloy with zinc plating.
Half-Inch Diameter Process Sealed Rotary
HALF-INCH DIAMETER PROCESS SEALED ROTARY
Rotary Switch 2 ~ 12 Position SP12T 0.4VA (AC/DC) 28VAC Panel Mount, Through Hole
| NKK Switches | New Yorker Electronics Co., Inc. | DigiKey | |
|---|---|---|---|
| Product Category | Rotary Switches | Rotary Switches | Rotary Switches |
| Product Number | MRK112-CA | 2300-MRK112-CA | MRK112-CA-ND |
| Product Name | Half-Inch Diameter Process Sealed Rotary | Rotary Switches | Rotary Switches |
| Actuator Type | Knobbed Shaft | Knobbed Shaft | |
| Current Rating | 0.4 amps | ||
| AC Voltage Rating | 28 volts | ||
| DC Voltage Rating | 28 volts | ||
| Positions per Pole | SP12T | 2 ~ 12 |
