The Circutor EC72 50A (code M10229) is a panel-mount moving iron ammeter for alternating current measurement up to 50 A. It operates without an auxiliary power supply, drawing all energy from the measured circuit, and delivers true RMS readings across a frequency range of 20 to 100 Hz. The 90-degree scale and direct analog display give operators an immediate, at-a-glance view of current levels.

Technical specifications:

• Model: EC72 50A
• Circutor code: M10229
• EAN: 8433059000929
• Measurement range: 50 A AC
• Accuracy class: 1.5% FE
• Scale: 90, P2
• Panel cutout: 72 x 72 mm
• Overall dimensions: 72 x 72 x 49.2 mm
• Mounting: Panel (flush)
• Weight: 0.139 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
• Overload capacity: 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, less than 1 min
• Standards: CE, IEC 51, IEC 144, BS 89, UNE-EN 60051, DIN 43780, UNE 21318

Features and benefits:

• No separate auxiliary supply required – the instrument is powered directly from the current circuit, reducing wiring and simplifying panel assembly.
• True RMS measurement from 20 to 100 Hz ensures accurate current readings even when the supply waveform is not a pure sine wave.
• Compatible exchangeable scales across the EC48, EC72, EC96, EM 45, EC 72 FA, and EC 96 FA families allow the range to be changed without replacing the entire unit.
• IP 52 front protection guards the meter face against dust ingress and water splash in typical panel environments.
• High short-time overload tolerance – up to 40 times rated current for 1 second – helps the instrument survive fault conditions without damage.

Applications:

• Current monitoring in industrial control cabinets and low-voltage motor control centres.
• Visual current indication on distribution boards and main switchboards in buildings and infrastructure.
• AC motor current supervision on machine control panels where a direct analog readout is preferred.
• Switchgear and panel builder assemblies requiring a compact 72 x 72 mm flush-mount ammeter with no auxiliary wiring.

Also known as: Circutor EC72 50A, EC72 50A M10229, M10229 ammeter, moving iron panel ammeter 50 A, analog AC ammeter 72×72 mm.