103 Elapsed Time Meter


103 Elapsed Time Meters

Analog Time Counter, available in Hours and minutes
(in a rugged 103 metal can and gasketed front)


  • Units meet ANSI spec C39.1
  • Units meet UL file #E44857 and CSA
  • 6 digit counters read in hours, tenths of hours, minutes and tenths of minutes
  • Weather resistant
  • Reset or non-reset models available
  • Conduit case models available
  • Accuracy: Matches frequency control of power system
  • Input: 120, 208, 240, 480 VAC at 50 or 60 Hz


  • Control room applications
  • Manufacturing environment
  • Ideal for adverse (dusty) environments or severe applications, meets UL-1437 or IEC 144 or IP54
  • Ideal for OEM and Retrofit applications


The 103-ETM uses the time-proven 240 elapsed time meter , housed in a 4.33" square weather-resistant case. It is designed for use with other switchboard instruments on electrical switchgear and control panels. It is UL/CSA recognized under file E 44857 and meets ANSI C39.1. Accuracy of these AC hour meters matches the frequency control
of your power system

  • Literature
  • Specifications
Literature and Technical Information
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Switchboard Panel Meters

++ Yokogawa Switchboard Catalog
Model: Yokogawa 103 ETM: 4 1/2" Switchboard Elapsed time Meters
Display: 6-digit counter in 5⁄32” high hours
and tenths of hours or minutes and tenths of
Basic Accuracy: Matches frequency control of
power system.
General Specifications
Vibration Shock: Meets ANSI Specification
Safety: Type 103 elapsed-time meters are recognized under the Component Program of Underwriters’ Laboratories. (UL File #E44857) & CSA
Input Range: All Type 103-800 models available to operate on 120 or 208/240 or 480 volts AC, 50 or 60 Hertz.
Sealing: All non-reset Type models are weather resistant. Sealed window and no through screw holes for flange or back-of-panel mounting protect motor, counter, and gearing from rain or panel wash-down.
Case: All AB/DB switchboard instruments have drawn steel case with zinc chromate coating except AB/DB40 plastic case version which is ABS plastic.
Cover: Gasketed cover to prevent contaminant ingress, polycarbonate-UL94V-0 cover and window.
Terminal plate: phenol resin material.
Mounting studs: 1/4” x 28 thread.
Terminal studs: 10-32 thread.
Dielectric (Hi-pot): 1500 VRMS for 1-1/2” and 2-1/2” sizes. 2600 VRMS for 3-1/2” size.
Insulation Level: 1800 VRMS Hi-pot., 2000VAC for 1 minute
Overload rating: Operating at 120, 208, 240 or 480 volts AC, will pass Hi-pot of 2000 VRMS for one minute.
Burden: 3 Watts typical.
Motor: Telechron, Model S-1.
Operating Temp.: 0 to 40°C (32 to 104°F)
Storage Temp: -10 to 50°C (14 to 50°F)
Relative Humidity: 95% (non condensing)
Mounting Hardware: Included with meter