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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)
c.
Quantity, number of conductors, and size and type of cables to be connected to the controller.
d.
Duty and service requirements (see 3.6).
e.
Control voltage, if other than that of the controlled device (see 3.7).
f.
Motor field isolation (see 3.9).
g.
Remote indicating and monitoring circuits is independently fused, if required (see 3.10).
h.
Provision for wiring to an over-speed trip module, if required (see 3.11).
i.
Ambient temperature and maximum permissible temperature rise (see 3.12 and table VIII).
j.
Emergency run feature, if required (see 3.16.2).
k.
Local transfer switch for vital function, if required (see 3.16.3).
l.
If embedded temperature detectors are used for overload protection (see 3.16.5).
m. Solid-state overload relay protection features other than as specified (see 3.16.5).
n.
Ambient pressure compensations, if required (see 3.16.6.1h).
o.
Pressure and temperature switch designation required (see 3.16.6.1.1 and 3.16.6.2.1).
p.  Pressure switch ranges, maximum proof pressure, and type of connection requirements (see table II and
table III, notes 1, 2, and 3, respectively).
q.  Optimum differential and switch capability requirements (see table II, notes 5 and 7, table III, notes 5 and
7, and table IV, notes 3 and 5).
r.
Ambient pressure compensation requirements (see table II, note 8).
s.
Programmable logic controller (PLC), if required (see 3.16.8).
t.
Variable speed drive (VSD), if required (see 3.16.9).
u.
Space heaters, if required (see 3.16.10).
v.
When indicator lights are required (see 3.16.11.1).
w. Controller characteristics (see 3.16.14).
x.
Voltage and phase rating (see 3.16.14a).
y.
Special service for submarine (see 3.16.14a).
z.
Current rating required (see 3.16.14b).
aa.
Operation (magnetic), protective features and function (see 3.16.14d).
bb. Location and type of switches (see 3.16.14e).
cc.
DC controllers, size, current, and dimensions, as applicable (see table V and table VII).
dd. AC controllers, size, current, and dimensions, as applicable (see table VI and table VII).
ee.
Enclosure type (see 3.16.16).
ff.  Requirements for inclusion of NSN on identification plate, if needed, and the NSN to be used
gg. Maximum vibration frequency, if other than 33 Hz (see 3.17.2).
hh. Requirements for resilient mounting of equipment (see 3.17.2.1 and 3.17.3.5).
ii.
Shock classification for associated switching devices other than specified (see 3.17.3c and d).
jj. AC controllers for low noise, if required (see 3.17.10 and table XI, table XII, and table XIII).
kk. Voltage ramp rate, if required (see 3.17.11.8).
ll.
Inspection conditions, if other than those specified in MIL-E-917 (see 4.2).
mm. Disposition of sample units (see 4.3.5).
nn. Packaging requirements (see 5.1).
oo. Engineering drawing requirements (see 6.3).
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