The Circutor EC72 F III+N 400V (code M10727) is a panel-mount analog voltmeter with an integrated phase switch, designed for AC voltage measurement in three-phase 4-wire systems. It covers a measurement range of 400 V with Class 1.5 accuracy and fits a standard 72 72 mm panel cutout, making it a compact choice for LV switchgear and distribution panels.

Technical specifications:

• Model: EC72 F III+N 400V
• Circutor code: M10727
• EAN: 8433059005238
• System: Three-phase 4-wire
• Measurement range: 400 V
• Accuracy class: 1.5% FE
• Scale: 90, P1
• Module size: 72 72 mm
• Overall dimensions: 72 72 49.2 mm
• Mounting: Panel
• Weight: 0.152 kg
• Front protection: IP 52
• Terminal protection: IP 00
• Working temperature: +10 to +30 C
• Storage temperature: -25 to +40 C
• Maximum installation height: 2000 m
• Measurement circuit consumption: 1 to 4 VA
• Frequency range: 20 to 100 Hz
• Maximum continuous voltage: 1.5 Vn (2 Vn for 5 s)
• Insulation voltage: 2 kV, 50 Hz, 1 min
• Standards: BS 89, UNE-EN 60051, IEC 144, DIN 43780, IEC 51, UNE 21318
• Certification: CE

Features and benefits:

• The built-in phase switch allows a single instrument to display each phase-to-neutral voltage in a three-phase 4-wire circuit, reducing the number of meters and panel wiring required.
• Class 1.5 accuracy in compliance with BS 89, IEC 51, and UNE-EN 60051 ensures dependable readings across a frequency range of 20 to 100 Hz.
• The compact 72 72 mm panel format fits directly into standard instrument cutouts with no additional adapters needed.
• IP 52 front protection keeps the display operational in environments where dust or dripping water may be present.
• Overload tolerance of 2 Vn sustained for 5 seconds protects the movement from brief voltage spikes that can occur during switching operations.

Applications:

• Monitoring individual phase voltages in three-phase 4-wire low-voltage distribution boards.
• Voltage indication in industrial control panels and motor-control centers.
• Building services switchgear where a compact, direct-reading voltage display is required.
• Electrical commissioning and test setups where analog voltage indication is preferred over digital readout.

Also known as: Circutor EC72 F III+N 400V, EC72 F III+N 400V M10727, Circutor M10727, three-phase panel voltmeter with phase switch, AC voltmeter 400 V.