MIL 72 Series
24-Hour and 7-Day Universal
Time Switches
APPLICATION
Time based control of lighting, ventilating, heating,
cooling or other electrical loads in commercial and
industrial applications. The MIL 72 time switches are
available with a 24-hour or 7-day program dial with a
single pole/double throw switch.
The MIL 72A series is intended for surface mounting.
The control is completely enclosed in a plastic housing
and includes a terminal cover and sub-base for
installation and hard wiring.
The MIL 72E is intended for flush (panel) mounting. All
units are supplied with a clear plastic cover.
TECHNICAL DATA
Supply Voltage:
Synchronous: 24, 120 and 240VAC,
60Hz models
Quartz: 24V AC/DC, 120 and
240VAC 50/60 Hz
Switch Type:
SPDT
Switch Rating:
21A @ 250VAC resistive
1350 W tungsten
1HP @ 120VAC
2HP @ 240VAC
16 FLA, 96 LRA, 120VAC ind.
12 FLA, 72 LRA, 240VAC ind.
Power
Consumption:
24V:
0.1VA;
120V:
0.5VA;
240V:
1.0VA
Ambient
Temperature Range: –40°F to 180°F, synchronous units
–14°F to 131°F, quartz units
Reserve Carryover: 150 hours for quartz units
Agency Approvals: UL Recognized
INSTALLATION
To the installer:
1. Read operating instructions carefully.
2. Check the input and output ratings marked on the
unit to make sure this product is suitable for your
supply power and application.
3. Disconnect supply power prior to installation to
prevent electrical shock.
4. Wire in accordance with National and Local
electrical code requirements.
The MIL 72 time switch can be surface, flush or rail
mounted and is also available with an enclosure for
stand-alone applications.
SURFACE MOUNTING—MIL 72A
Remove dust-proof cover, loosen two screws on
opposite corners. Remove the housing that
surrounds the time switch and the terminal cover
away from the base.
Place screw through pre-set holes in base and
screw to back of panel or wall.
Wire in accordance with instructions. Depending
upon the specific installation, you may find it more
convenient to have wiring completed before
attaching the base. Replace terminal cover and
push timer firmly onto plug-in base. Now replace
housing and secure with screws.
NOTES:
• The MIL 72A may also be DIN rail mounted—
simply break out housing part that fits over rail on
each side.
• 24V quartz unit will operate on 6VDC, 12VDC, or
24VDC
MIL 72E
(Flush Mounting)
MIL 72A
(Surface Mounting)
