S P E C I F I C A T I O N S
Power Tap Switches
Material
Body: Ceramic, arc-proof
High-current, Non-shorting Type
(models 212, 312, 412, 608).
Compression Molded Polyester
(model 111). Melamine Phenolic
(model 711)
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
3
Typical Model 711: Using /8-32 bushing
Typical
1
ceramic style for /8 thick maximum panel.
tandem model
Four non-turn lug positions are
possible on the single, unen-
closed switch. Recesses in body
of switch permit positioning of
Overall non-turn washer at 12, 3, 6 and
Rating Rating Max. no. Diameter Depth behind panel (in./mm) Shaft 3
9 oclock. /16 hole for non-turn
Model (AC) (DC)* of taps (max., in./mm) single 2 in tandem 3 in tandem Torque 1
washer. Shaft /4
13 25 15
1
711 7A 125V 7A 20V 11 1.56 / 39.6 /16 / 20.6 1 /32 / 45.2 2 /32 / 62.7 7-12 oz.-in.
Model 111: For /4 panel, maxi-
1 3 3
111 15A 125V 15A 20V 11 2.19 / 56 1 /8 / 28.7 2 /4 / 69.9 1.5-3.8 in.-lbs. mum, using /8-32 bushing and
3
3 3 3
hex nut. A /16 hole is required
212 20A 150V 20A 20V 12 2.25 / 57 1 /4 / 44.5 4 /16 / 106.4 6 /16 / 157.2 3-7 in.-lbs.
for the non-turn washer. Shaft
1 5
312 30A 300V 30A 20V 12 3.31 / 84 2 /4 / 57.2 4 /8 / 117.5 7 / 177.8 3-7 in.-lbs.
1
/4
7 1 5
412 50A 300V 50A 20V 12 4.25 / 108 2 /16 / 61.9 5 /32 / 127.8 7 /8 / 193.7 3-8 in.-lbs.
3
Model 212: Using /8-32 threaded
5 13 5
608 100A 300V 100A 20V 8 6.25 / 159 3 /16 / 84.1 6 /16 / 173.0 10 /16 / 261.9 25-35 in.-lbs.
5
bushing and hex nut. A /32 hole
is required for the non-turn pin.
*non-inductive load
1
Shaft /4
All dimensions for reference only; consult factory for details.
1
Model 312: For /4 panel, maxi-
mum, use three 10-32 flat-head
3
machine screws /8 long. Shaft
Switch, rated at 7 amps, has Ceramic and metal construction
1
Ohmite power Tap Switches
/4
provides resistance to arcing,
a reinforced non-metal body
1
(high power rotary switches)
Model 412: For /4 panel, maxi-
burning and charring.
and solid metal alloy contacts.
are constructed to provide
mum, use three 10-32 flat-head
Tandem assemblies available as
These units feature high cur-
3
dependable, convenient machine screws /8 long. A
standard models.
rent handling capability in a
5
operation. /16 hole in panel is required for
UL listed for models 111, 212,
small package.
shaft.
All Ohmite tap switches,
312 and 412
from 15 to 100 amps, have Model 608: For 1 panel, maxi-
RoHS compliant product avail-
F E A T U R E S
mum, three flat-head machining
ceramic arc-proof bodies and
able Jan. 2006 Add E suffix to
1 1
Slow-breaking, Quick-make
screws /4-20, 1 /4 long. Drill
metal alloy contacts. Their
part number to specify.
7
action proved best for switching
a /16 hole in panel for shaft.
all-soldered and all-riveted
3
AC current.
Shaft /8
construction assures mechani-
Non-shorting type disconnects
NOTE: Since all tap switches are
cal and operational integrity.
previous circuit before establish-
electro-mechanical devices, they
Even the smallest Ohmite Tap
ing contact for succeeding tap.
are subject to wear and, there-
fore, have a finite life.
S T A N D A R D P A R T N U M B E R S F O R P O W E R T A P S W I T C H E S
Model 711 Model 111 Model 212 Model 312 Model 412 Model 608
7A - 125V 15A - 125V 20A - 150V 30A - 300V 50A - 300V 100A - 300V
3 60 3 80
4 90 4 120
5 120 5 160
6 150 6 200
7 180 7 240
8 210 8 280
9 240
10 270
Check product availability at www.ohmite.com
11 300
12 330
See page 82 for knobs,
= Non-standard values subject to minimum handling charge per item
dials, and other hardware
* Insert number of taps at asterisk for complete part number (e.g. 111-3-T2)
80 Ohmite Mfg. Co. 1-866-9-OHMITE Intl 1-847-258-0300 Fax 1-847-574-7522 www.ohmite.com info@ohmite.com Ohmite Mfg. Co. 1600 Golf Rd., Rolling Meadows, IL 60008 1-866-9-OHMITE Intl 1-847-258-0300 Fax 1-847-574-7522 www.ohmite.com info@ohmite.com 81
Number of taps*
Total rotation
711-* Single unit
711-*-T2 2 in tandem
711-*-T3 3 in tandem
111-* Single unit
111-*-T2 2 in tandem
212-* Single unit
212-*-T2 2 in tandem
212-*-T3 3 in tandem
312-* Single unit
312-*-T2 2 in tandem
312-*-T3 3 in tandem
412-* Single unit
412-*-T2 2 in tandem
412-*-T3 3 in tandem
Number of taps*
Total rotation
608-* Single unit
608-*-T2 2 in tandem
608-*-T3 3 in tandemPower Tap Switches
High-current, Non-shorting Type
Model 111 Model 212
Model 312 Model 412
Model 608
80 Ohmite Mfg. Co. 1600 Golf Rd., Rolling Meadows, IL 60008 1-866-9-OHMITE Intl 1-847-258-0300 Fax 1-847-574-7522 www.ohmite.com info@ohmite.com Ohmite Mfg. Co. 1-866-9-OHMITE Intl 1-847-258-0300 Fax 1-847-574-7522 www.ohmite.com info@ohmite.com 81