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Current Sensor - Autoset

  • Self-calibrating for proof of flow
  • 2.5-135A range
  • N.O. 30VAC/DC or 120VAC output
  • Optional command relay


  • Detecting belt loss, coupling shear, and mechanical failure on fans and pumps
  • Monitoring status of industrial processes
  • Monitoring status of critical motors


The AutoSet™ line offers unparalleled installation ease for proof of flow status applications. Sensor automatically adjusts to detect motor undercurrent conditions such as belt loss, coupling shear, and mechanical failure on fans and pumps. Eliminates the need to calibrate in energized enclosures while reducing installation time.

Product     Price   Quantity
C-2330 Current Switch, Autoset, N.O, Split-core, 2.5-135A   $ 126.00
C-2330HV Current Switch, AutoCal, N.O.Split-core;2.5-135A; 120VAC   $ 148.80
CR3-12 Command Relay, N.O., 12 VDCcoil   $ 25.50
CR3-24 Command Relay, N.O., 24 VAC/DCcoil   $ 25.50
CR4-12 Command Relay, N.C., 12 VDCcoil   $ 25.50
CR4-24 Command Relay, N.C., 24 VDCcoil   $ 25.50


List prices shown; trade pricing appears on orderpad for Senva Trade Accounts.
For qualified trade pricing, please contact us at 866-660-8864.
Oregon has no sales tax.

Self calibration for proof of floor on fans and pumps

  • Safer: Eliminates calibration in energized enclosures, reduces arc flash hazard
  • No need to return to calibrate—saves time and money
  • Sensor is always properly adjusted—no call backs
  • Proprietary design dynamically adjusts, eliminating call

backs due to air balancing

  • Push-button and LED interface:
    • Slow blink = normal operation
    • Fast blink = alarm
    • Fast learn mode (optional): Press/hold button 1 second,
    • LED makes 2 fast blinks.
  • Go/No mode (optional) : Press/hold button 5 seconds,
  • LED makes 3 fast blinks.

Split-core with optional command relay

  • Easy installation and provides stop/start/status in unitary device—saves component and installation space/cost

Maintenance-free—no call backs

  • Superior to differential pressure sensors
  • Industry leading 7 year warranty
Split Core Min (on) Max A N.O. Output* Sensor Power
C-2330 2.5A 135A 1.0A@30VAC/DC Induced
C-2330HV 2.5A 135A 0.2A@120VAC Induced
Command Relay Contact rating Coil
CR3-24 N.O. 10A@125VAC 24VAC/DC, 15mA nom.
CR4-24 N.C. 10A@125VAC 24VAC/DC, 15mA nom.
CR3-12 N.O. 10A@125VAC 9-12VDC, 30mA nom.
CR4-12 N.C. 10A@125VAC 9-12VDC, 30mA nom.
Standard Output Rating 1.0A@30VAC/DC
Line Voltage Output Rating 0.2A@120VAC (-HV MODEL ONLY)
Output Type NO, solid-state FET
Temperature Rating -15-60 ° C
Insulation Class 600V RMS. For use on insulated conductors only! Use minimum 75 ° C insulated conductor
Frequency Range 50/60Hz