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AC Controls
Manual Motor Starter Switches
Table 15.8
NEMA 7 & 9 Enclosures
Device
Class SMF
Fractional
HP Starter
Class MMF
Motor
Starter
Switch
Application
Class 12 manual starting switches are
designed to economically start and stop
inherently protected single and polyphase
motors as used in light machine tools,
pumps, blowers, and vent-fans. They are
also used as ON and OFF switches for
resistive loads such as heating.
Wiring Diagrams
1-Phase
Dimension Drawings
15
288
Explosion Proof
Type of
Operator
Type
FR2, FR2H
Toggle
FR1, FR1H
KR2, KR2H
Toggle
KR2, KR1H
Features
This switch is compact, economical, and
easily wired using pressure type screw
connectors. A rugged over center toggle
mechanism results in a long life with
weld free operation. It is available for sur-
face mounting in a NEMA 1 enclosure,
for flush mounting on a standard depth
switch box or in custom panels. A pilot
light for 120, 208 / 240, or 480 volts may
NEMA 1
Siemens Electrical Products and Systems
Specification Guide
Dimension / Wiring Diagrams
3.97 in.
(100.8 mm)
1.38 in.
(35.05 mm)
6.38 in.
(162 mm)
5.75 in.
(146 mm)
Center Line
(Conduit)
0.31 in.
1.38 in.
0.72 in.
(7.94 mm)
(34.93 mm)
(18.29 mm)
Mtg. Holes
be added at any time before or after
installation.
Table 15.9
Class 12 Manual Starting Switches
Type
1-Phase
3-Phase
3-Phase
Open with Flush Plate
4.38 in.
(111.25 mm)
9⁄ 32
Padlock
Hole
0.75 in. -14
(19.05 mm)
1.19 in.
Pipe Tap
(30.23 mm)
(Bottom Only)
Maximum Horsepower
230 –
115
575
120V
Continuous
Volts
Volts
DC
Amp Rating
2
3
1
24
—
—
2
15
CSI Section 16160
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