Circutor M10420 EC72 .../110V Voltmeter

The Circutor EC72 .../110V (code M10420) is a moving iron AC voltmeter in the compact 72 × 72 mm panel format, designed for voltage measurement via transformer secondary inputs at 110 V. It delivers true root mean square readings at accuracy class 1.5 without requiring an auxiliary power supply, drawing all operating power from the measurement circuit itself. The 90° scale with P1 pointer type provides clear, immediate voltage indication in switchgear, distribution boards, and industrial control panels.

Technical specifications:

• Model: EC72 .../110V
• Circutor code: M10420
• EAN: 8433059003678
• Measurement type: Moving iron, AC
• Measurement method: True RMS
• Measurement input: Voltage transformer secondary, 110 V
• Scale: 90°, P1
• Accuracy: 1.5 % FE (class 1.5)
• Panel format (modules): 72 × 72 mm
• Overall dimensions (W × H × D): 72 × 72 × 49.2 mm
• Mounting: Panel
• Weight: 0.138 kg
• Front protection: IP 52
• Terminal protection: IP 20
• Power consumption: 1 - 4 VA
• Frequency range: 20 - 100 Hz
• Maximum continuous voltage: 1.5 × Vn rated; 2 × Vn for 5 s
• Insulation voltage: 2 kV at 50 Hz for 1 min
• Operating temperature: +10 to +30 °C
• Storage temperature: -25 to +40 °C
• Certifications: CE
• Standards: BS 89, UNE-EN 60051, IEC 144, DIN 43780, IEC 51, UNE 21318
• Maximum installation altitude: 2000 m

Features and benefits:

• No auxiliary power supply required - the instrument draws power directly from the measured circuit, reducing installation wiring
• True RMS measurement gives accurate voltage readings on AC circuits including non-ideal waveforms
• Exchangeable scales are shared across the EC48, EC72, EC96 and EM 45 series, reducing the number of spare scale assemblies needed on site
• IP 52 rated front panel protects the mechanism against dust ingress and dripping water in panel environments
• Frequency range of 20 - 100 Hz accommodates both 50 Hz and 60 Hz power systems

Applications:

• Monitoring 110 V transformer secondary outputs in medium-voltage substations and switchgear panels
• Panel instrumentation in industrial control boards, motor control centers, and MCC doors
• Electrical distribution switchboards requiring compact 72 × 72 mm DIN panel instruments
• Building electrical installations where visual, at-a-glance AC voltage status checks are required

Also known as: Circutor EC72 .../110V, EC72 110V voltmeter, M10420 voltmeter, moving iron panel voltmeter, Circutor transformer voltmeter.