DAZIC® 4100 Series

4100 Series Zero Speed Switch

Operating Range: 4 to 1800 RPM

The 4100 Series Zero Speed Switches are electromechanical rotary motion controls requiring no electrical input to operate.

These switches are designed for systems with a moderate to high RPM.

These shaft-driven devices can let you know if equipment is running too fast, too slow, or not at all. These UL-approved speed switches can be interlocked as part of a conveyor system to ensure that if one machine fails, the entire operation will stop, avoiding an expensive and time-consuming pile-up of material.

  • For shaft input speeds of 4 to 1800 RPM.
  • Will operate in temperatures ranging from -40° F to +250° F (-40° C to +482° C).
  • NEMA 4/4X housings are painted with an epoxy-based powder coat to provide corrosion resistance as well as protection against dust, rain and hose-directed water.

Speed Switch devices coupled to a corresponding shaft, must be properly mounted and aligned to avoid putting extra load on DAZIC bearings, which may cause premature failure.

The use of installation accessories such as Mounting Brackets and K-Couplings provide a secure foundation and eliminate misalignment connection problems.

Click here if you want to learn more about our recommended installation accessories that work perfectly with our DAZIC speed switches.

Need assistance choosing the appropriate speed switch? Fill out the Application Data Sheet and a Sales Engineer will help determine which switch is right for your specific application.

Dazic® Application Data Sheet
4100 Series
Driver V-belt, Roller wheel, Chain drive or Sprocket
Shaft Diameter 1/2″ (1.27 cm)
Operating Range 4 to 1800 RPM
Driver Torque Required .0208 ft-lb (4 in-oz) (.0282 Nm)
Temperature Tolerance -40°F to +250°F (-40°C to +121°C)
Housing Options Aluminum (AL) or Cast Iron (CI)
NEMA Rating 4/4x
Mounting Options Base Mount
Dimensions (L x W x H) 6.95″ x 4.25″ x 3.93″ (17.65 cm x 10.80 cm x 9.98 cm)
Wiring Contact Options SPDT, DPDT, SPDT(2)
Weight AL – 4 lbs. (1.81 kg)      CI – 8 lbs. (3.63 kg)
DAZIC® 4100 Series


It takes just 5 clicks to fill out our Data Application sheet. Our Sales Engineer can then recommend the best speed switch for your specific needs.