MIL-DTL-2212 Contactors And Controllers, Electric Motor Ac Or Dc, And Associated Switching DevicesThis specification covers alternating current \(AC\) and direct current \(DC\) motor controllers, contactors \(see 6.8.6\), and associated switching devices \(see 6.8.3\). Included are magnetic controllers, controller parts \(see 6.8.52\), limit switches \(see 6.8.90\), pressure switches \(see 6.8.92\), temperature switches \(see 6.8.95\), selector switches \(see 6.8.94\), push-buttons \(see 6.8.57\), and similar devices used for control of electric motors \(see 6.8.19\). Semiconductor \(solid-state\) devices used as parts for magnetic controllers are included.

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MIL-DTL-2212K(SH)

B - Diaphragm

C - Piston

3.16.6.1.1.6 Voltage. The pressure switch voltage shall be designated by the single number symbol as follows:

1 - 440 VAC

2 - 115 VAC

3 - 230 VDC

4 - 115 VDC

3.16.6.1.1.7 Dimensions. The pressure switch dimensions shall be designated by a single number symbol as

follows:

1 - For regular switch:

Mounting hole separation distance: 213/32 inches with the space between left-side mounting hole and the

housing edge as 13/16+⅛ inch and the space between the left-side mounting hole and the lower mounting hole

is 39/32 inches vertically and 21/32 inch horizontally, hole to hole tolerance is �1/32 inches.

Switch box housing (maximum): 35/16 inches (height) by 5� inches (width) by 53/16 inches (depth).

Sensor housing (maximum): 3⅞ inches

2 - For differential switch:

Mounting hole separation distance: 5� inches

Switch box housing (maximum): 35/16 inches (height) by 5� inches (width) by 53/16 inches (depth).

Sensor housing (maximum): 3⅞ inches

3 - Special (other than the standard dimensions for regular switch)

4 - Special (other than the standard dimensions for differential switch)