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Speed Switch Model
2100
Characteristics
Model
4100
Characteristics
Model
8100
Characteristics
Model
RotoGuard
Characteristics
Model
Proximity
Characteristics
Electricity Required No No No Yes Yes
Driver Options Shaft-to-Shaft V-Belt
Roller Chain
Sprocket
Shaft-to-Shaft Shaft-to-Shaft
V-Belt
Chains
Sensor
RPM Operating Range 4 – 2,000 24 – 1,800 0.5 – 24 Up to 400 Up to 30,000
Available Housings Aluminum
Cast Iron
Explosion Proof
Aluminum
Cast Iron
Aluminum
Cast Iron
Explosion Proof
Aluminum
Explosion Proof
Aluminum w/
Lexan Cover
NEMA Ratings 4 / 4x
7 / 9
4 / 4x 4 / 4x
7 / 9
4 / 5
7 / 9
4 / 5
User Adjustable Model
Specific
Model
Specific
Model
Specific
Model
Specific
Yes
Mounting Options Base
Flange
Flange w/Pilot
Base Base
Flange
Flange w/Pilot
Base Mount Base Mount
w/Remote
Sensor
Wiring Contacts
(See Note)
S.P.D.T.
D.P.D.T.
S.P.D.T.(2)
S.P.D.T.
D.P.D.T.
S.P.D.T.(2)
S.P.D.T.
D.P.D.T.
S.P.D.T.(2)
D.P.D.T. S.P.D.T.
Note:
S.P.D.T. = Single Pole Double Throw
D.P.D.T. = Double Pole Double Throw
S.P.D.T.(2) = Single Pole Double Throw–Direction Indicating

Please contact us with questions regarding the Speed Switch Models Comparison chart, or fill out a quick and easy 5 question Speed Switch Selection Form which will assist us in helping you select the proper Zero Speed Switch for your specific application.