S P E C I F I C A T I O N S
Power Tap Switches
Material
Body: Ceramic, arc-proof
(models 212, 312, 412, 608).
Compression Molded Polyester
(model 111). Melamine Phenolic
(model 711)
High-current, Non-shorting Type
Model 711
Contacts: Silver alloy. Common
contact is rounded for assured
seating. Self-cleaning with built
in wiping action.
Terminals: Soldering. 711 also
accepts quick connectors; 412,
#10 screws; 608, 0.25” bolts.
Mounting
Model 711: Using 3/8-32 bushing
for 1/8” thick maximum panel.
Four non-turn lug positions are
possible on the single, unen-
closed switch. Recesses in body
of switch permit positioning of
non-turn washer at “12, 3, 6 and
9 o’clock.” 3/16 “ hole for non-turn
washer. Shaft 1/4”
Typical
Typical
ceramic style
tandem model
Overall
Rating
(AC)
7A 125V
Rating Max. no. Diameter
Depth behind panel (in./mm)
(DC)* of taps (max., in./mm) single
Shaft
Torque
7-12 oz.-in.
1.5-3.8 in.-lbs.
3-7 in.-lbs.
Model
711
2 in tandem
125/32 / 45.2
23/4 / 69.9
43/16 / 106.4
45/8 / 117.5
3 in tandem
215/32 / 62.7
—
Model 111: For 1/4” panel, maxi-
mum, using 3/8-32 bushing and
hex nut. A 3/16” hole is required
for the non-turn washer. Shaft
1/4”
Model 212: Using 3/8-32 threaded
bushing and hex nut. A 5/32” hole
is required for the non-turn pin.
Shaft 1/4”
7A 20V 11
1.56 / 39.6
2.19 / 56
2.25 / 57
3.31 / 84
4.25 / 108
6.25 / 159
13/16 / 20.6
11/8 / 28.7
13/4 / 44.5
21/4 / 57.2
27/16 / 61.9 51/32 / 127.8
35/16 / 84.1 613/16 / 173.0
111 15A 125V 15A 20V 11
212 20A 150V 20A 20V 12
312 30A 300V 30A 20V 12
412 50A 300V 50A 20V 12
63/16 / 157.2
7 / 177.8
3-7 in.-lbs.
3-8 in.-lbs.
105/16 / 261.9 25-35 in.-lbs.
75/8 / 193.7
608 100A 300V 100A 20V
8
*non-inductive load
All dimensions for reference only; consult factory for details.
Model 312: For 1/4” panel, maxi-
mum, use three 10-32 flat-head
machine screws 3/8” long. Shaft
1/4”
Model 412: For 1/4” panel, maxi-
mum, use three 10-32 flat-head
machine screws 3/8” long. A
5/16” hole in panel is required for
shaft.
Model 608: For 1” panel, maxi-
mum, three flat-head machining
screws 1/4-20, 11/4” long. Drill
a 7/16” hole in panel for shaft.
Shaft 3/8”
NOTE: Since all tap switches are
electro-mechanical devices, they
are subject to wear and, there-
fore, have a finite life.
• Ceramic and metal construction
provides resistance to arcing,
burning and charring.
• Tandem assemblies available as
standard models.
• UL listed for models 111, 212,
312 and 412
• RoHS compliant product avail-
able Jan. 2006 Add “E” suffix to
part number to specify.
Switch, rated at 7 amps, has
Ohmite power Tap Switches
(high power rotary switches)
are constructed to provide
dependable, convenient
operation.
All Ohmite tap switches,
from 15 to 100 amps, have
ceramic arc-proof bodies and
metal alloy contacts. Their
all-soldered and all-riveted
construction assures mechani-
cal and operational integrity.
Even the smallest Ohmite Tap
a reinforced non-metal body
and solid metal alloy contacts.
These units feature high cur-
rent handling capability in a
small package.
F E A T U R E S
• “Slow-breaking, Quick-make”
action proved best for switching
AC current.
• Non-shorting type disconnects
previous circuit before establish-
ing contact for succeeding tap.
S TA N D A R D P A R T N U M B E R S F O R P O W E R TA P S W I T C H E S
Model 711
7A - 125V
Model 111
15A - 125V
Model 212
20A - 150V
Model 312
30A - 300V
Model 412
50A - 300V
Model 608
100A - 300V
3
4
5
6
7
8
9
10
11
12
60°
90°
3
4
5
6
7
8
80°
120°
160°
200°
240°
280°
120°
150°
180°
210°
240°
270°
300°
330°
Check product availability at www.ohmite.com
See page 82 for knobs,
dials, and other hardware
= Non-standard values subject to minimum handling charge per item
* Insert number of taps at asterisk for complete part number (e.g. 111-3-T2)
80
Ohmite Mfg. Co.
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
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