Circutor M10228 EC72 40A Ammeter

The Circutor EC72 40A (code M10228) is a moving iron panel ammeter for direct AC current measurement up to 40 A. It fits a standard 72 x 72 mm DIN panel cutout, delivers Class 1.5 accuracy on a 90-degree scale, and operates without any auxiliary power supply.

Technical specifications:

• Model: EC72 40A
• Circutor code: M10228
• EAN: 8433059000905
• Product type: Moving iron ammeter
• Measurement range: 40 A
• Scale: 90°, P2
• Accuracy class: 1.5 (1.5% FE)
• Panel cutout / module size: 72 x 72 mm
• Overall dimensions: 72 x 72 x 49.2 mm (width x height x depth)
• Mounting: Panel mount
• Weight: 0.137 kg
• Front protection: IP 52
• Terminal protection: IP 00
• Operating temperature: +10 to +30 °C
• Storage temperature: -25 to +40 °C
• Frequency range: 20 to 100 Hz
• Power consumption: 0.3 to 1.5 VA
• Allowable overload: 1.2 × In continuous; 5 × In for 30 s; 10 × In for 5 s; 40 × In for 1 s
• Insulation voltage: 2 kV at 50 Hz, 1 min (mechanism to case)
• Maximum installation height: 2000 m
• Certifications: CE
• Standards: BS 89, UNE-EN 60051, IEC 144, DIN 43780, IEC 51, UNE 21318

Features and benefits:

• No auxiliary power supply needed - the instrument draws its operating energy (0.3 to 1.5 VA) directly from the measurement circuit, simplifying wiring and panel design.
• True RMS measurement gives accurate readings across the full 20 to 100 Hz operating frequency range, including non-sinusoidal waveforms.
• IP 52 front-face protection guards against dust ingress and light water splash, making it suitable for panel-mounted use in industrial environments.
• Robust overload handling - withstands 5 × In for 30 seconds and brief transient spikes of 40 × In for 1 second without damage to the movement.
• Scales are interchangeable with the EC48, EC72, EC96, EM 45, EC 72 FA, and EC 96 FA instrument series, reducing spare-parts inventory across mixed panel installations.

Applications:

• AC distribution boards and low-voltage switchgear panels requiring continuous visual current indication.
• Motor control centres and starter panels where operating current must be monitored at a glance.
• Industrial machine control cabinets fitted with standard 72 x 72 mm DIN panel cutouts.
• Building electrical installations needing a compact, self-powered AC current display.

Also known as: Circutor EC72 40A, EC72 40A M10228, moving iron ammeter 40A, panel ammeter 72x72 mm, Circutor M10228.