The Circutor EC72 FA ../5A (code M10521) is a moving iron AC ammeter with a built-in phase switch for panel installation. Designed to work with current transformers having a 5 A secondary output, it displays current on a 90 scale to class 1.5 accuracy in a compact 72 x 72 mm panel-mount format.

Technical specifications:

• Model: EC72 FA ../5A
• Circutor code: M10521
• EAN: 8433059004484
• Product type: AC ammeter with phase switch, moving iron
• Measurement input: …/5 A (5 A CT secondary)
• Scale: 90, P2
• Accuracy class: 1.5 %FE
• Panel cutout size: 72 x 72 mm, depth 49.2 mm
• Weight: 0.141 kg
• Front protection: IP 52
• Terminal protection: IP 00
• Operating temperature: +10 to +30 C
• Storage temperature: -25 to +40 C
• True RMS measurement range: 100 mA to 100 A
• Circuit consumption: 0.3 to 1.5 VA
• Frequency range: 20 to 100 Hz
• Continuous overload capacity: 1.2 In
• Short-term overload: 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)
• Certifications: CE
• Standards: BS 89, UNE-EN 60051, IEC 144, DIN 43780, IEC 51, UNE 21318
• Auxiliary power supply: not required

Features and benefits:

• Operates without an auxiliary power supply, drawing all necessary operating power from the measurement circuit and reducing panel wiring complexity.
• Scales are interchangeable with the EC48, EC72, EC96, EM 45, EC 72 FA, and EC 96 FA instrument series, minimising spare-parts inventory across a panel installation.
• Short-term overload tolerance up to 40 In for 1 second protects the instrument during fault current events without requiring replacement.
• IP 52 front protection shields the dial from dust ingress and water splash, maintaining readability in switchboard environments.
• A frequency range of 20 to 100 Hz allows use beyond the standard 50 Hz grid, accommodating varied AC system frequencies.

Applications:

• Monitoring individual phase currents on low-voltage switchboards and distribution panels via 5 A CT secondaries.
• Motor control centres and industrial control cabinets requiring clear visual current indication with phase selection capability.
• Building electrical distribution boards specifying a 72 x 72 mm DIN panel-mount instrument format.
• AC installations where a self-powered panel ammeter is needed without additional auxiliary supply wiring.

Also known as: Circutor EC72 FA ../5A, EC72 FA M10521, Circutor M10521, moving iron panel ammeter, phase switch ammeter 5A.