Ammeters

Ammeters provide an accurate way of measuring and displaying current within a circuit. They are designed for panel mounting and are used across a range of industrial applications. These metered instruments measure current flow in amperes. The ampere level of the current is displayed on using either an analogue scale or digital readout. The current is presented in draw (how much current flows) or continuity (how uninterruptable the current is). Learn more about the different types of ammeters in our complete guide to ammeters.

What are digital panel ammeters?

Digital ammeters feature a programmable bar-graph scale that allows both minimum and maximum values to be set, enabling a custom scale, dependant on the needs of the application. The digital display can be programmed to change colour, flash or change annunciator message. These panel meters often feature triggers that can be programmed to sound an alarm when a critical point has been reached. The digital meter can also be set to trip when values exceed, fall behind, are between or are outside set points.

What are analogue panel ammeters?

Analogue panel ammeters determine whether erratic loads exist in electrical circuits. High ampere levels may indicate short-circuiting, unintentional grounding or indicate a defective component in the network. Low current flow points to high resistance or weak flow in the circuit.

Types of analogue panel ammeters

Analogue panel ammeters come in five types:

  • Moving coil: where magnetic deflection causes the coil to move when the current passes through the coil
  • Moving magnet: where the coil is mounted in the metered case, and a permanent magnet moves the needle
  • Moving iron: where an iron needle moves in response to an electromagnetic force from the coil.
  • Electrodynamic: where an electrodynamic magnet responds to alternating and direct current movement
  • Hot wire: where current passes through a wire that expands when heated, indicating low or high ampere levels

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Description Price Maximum Value Current Type Moving Element Cutout Height Cutout Width Depth Meter Accuracy Minimum Temperature Maximum Temperature Approvals Measurement Range Minimum Displayed Value Series
RS Stock No. 186-2473
BrandRS PRO
HK$167.93
Each
units
- AC Moving Iron 96mm 96mm 66 (100 A)mm 1 % -10°C +65°C - - - -
RS Stock No. 177-0258
Mfr. Part No.3NJ6900-4HJ12
BrandSiemens
HK$1,318.54
Each
units
400A AC - - - - - - - CE Certified 1 → 400A 1A 3NJ6900
RS Stock No. 901-0346
BrandRS PRO
HK$107.31
Each
units
10A AC Moving Iron 68mm 68mm 36.5mm ±1.5 % -25°C +50°C CE, RoHS Compliant, TUV Certified, UL E327849 0 → 20A 0A RS PRO
RS Stock No. 177-0231
Mfr. Part No.3NJ6900-4HB12
BrandSiemens
HK$1,318.54
Each
units
50A AC - - - - - - - CE Certified 1 → 50A 1A 3NJ6900
RS Stock No. 177-0265
Mfr. Part No.3NJ6900-4HK22
BrandSiemens
HK$1,318.54
Each
units
500A AC - - - - - - - CE Certified 5 → 100A 5A 3NJ6900
RS Stock No. 186-2415
BrandRS PRO
HK$162.41
Each
units
Scale)A, 30 (Input AC Moving Iron 48mm 48mm 54 (<30 A) mm, 72 (30 → 60 A) mm 1 % -10°C +65°C - 0 → 30 (Input, Scale)A 0 (Input, Scale)A -
RS Stock No. 196-8395
Mfr. Part No.IS 11003
HK$576.41
Each
units
1mA DC Moving Coil 32.3mm 73.7mm 30.5mm ±1.5 % -25°C +55°C - - - -
RS Stock No. 186-2527
BrandRS PRO
HK$355.14
Each
units
1 (Input)A DC Moving Coil 76mm 74mm 45.7mm ±1.5 % 0°C +60°C - 0 → 1 (Input)A 0 (Input)A -
RS Stock No. 195-9131
Mfr. Part No.CUB4CL20
BrandRed Lion
HK$1,983.06
Each
units
- DC - 33mm 68mm 49.8mm - 0°C +60°C - 4 → 20 mA, 10 → 50 mA - CUB4CL
RS Stock No. 186-2514
BrandRS PRO
HK$263.45
Each
units
10 (Input)A AC - 76mm 74mm 45.7mm ±1.5 % 0°C +60°C - 0 → 10 (Input)A 0 (Input)A -
RS Stock No. 163-8741
Mfr. Part No.PM-2/30UA
BrandMonacor
HK$153.39
Each
units
30µA - Moving Coil - - 23mm Class 2 - - - - - PM-2
RS Stock No. 312-820
Mfr. Part No.D72MIS40A/1-001
BrandHOBUT
HK$178.83
Each
units
0/40A Direct Connected AC Moving Iron 72mm 72mm 38.5mm Class 1.5 -25°C +40°C - 0/40A Direct Connected - D72SD
RS Stock No. 886-2023
Mfr. Part No.PQ94-I12L2N1CAW0ST
HK$183.49
Each
units
1mA DC Moving Coil 96mm 96mm 54mm - -10°C +55°C CE, DIN 40050, DIN 43701, DIN 43718, DIN 43802, DIN 43807, DIN 46200, DIN 46282, DIN EN 60051, DIN IEC 61554, EC 51, EC 529, IEC 1010, IS:1248, IS:9249, U, 2004 / 108 / EC (EMC Directive), 2006 / 95 / EC (Low Voltage Directive) and Amendment 93 / 68 / EEC Maximum of 1mA - Sigma
RS Stock No. 186-2535
BrandRS PRO
HK$222.53
Each
units
50 (Input)µA DC Moving Coil 57mm 44mm 45.7mm ±1.5 % 0°C +60°C - - - -
RS Stock No. 886-1923
Mfr. Part No.EQ94-I1522N1CAW0ST
HK$115.12
Each
units
20A AC Moving Iron 96mm 96mm 54mm - -10°C +55°C CE, DIN 40050, DIN 43701, DIN 43718, DIN 43802, DIN 43807, DIN 46200, DIN 46282, DIN EN 60051, DIN IEC 61554, EC 51, EC 529, IEC 1010, IS:1248, IS:9249, U, 2004 / 108 / EC (EMC Directive), 2006 / 95 / EC (Low Voltage Directive) and Amendment 93 / 68 / EEC 0 → 20A 0A Sigma
RS Stock No. 186-2529
BrandRS PRO
HK$355.14
Each
units
10 (Input)A DC Moving Coil 76mm 74mm 45.7mm ±1.5 % 0°C +60°C - 0 → 10 (Input)A 0 (Input)A -
RS Stock No. 244-957
Mfr. Part No.R68M-80A-001
BrandHOBUT
HK$221.42
Each
units
80A DC Moving Magnet 63.5mm 62.5mm 35mm ±8 % -20°C +40°C - 0/80A - R68M
RS Stock No. 905-5490
Mfr. Part No.CUB4CL30
BrandRed Lion
HK$1,983.06
Each
units
- - - 33mm 68mm 49.8mm - 0°C +60°C - 4 → 20 mA, 10 → 50 mA - CUB4
RS Stock No. 914-5408
Mfr. Part No.D72SD5A/0-1200A
BrandHOBUT
HK$136.82
Each
units
0/1200A For 1200/5A CT AC Moving Iron 72mm 72mm 38.5mm Class 1.5 -25°C +40°C BS89, CE, DIN 43700, DIN 43802, IEC 51, UL 94V0, UL 94V1 0/1200A For 1200/5A CT 0A D72SD
RS Stock No. 186-2533
BrandRS PRO
HK$233.45
Each
units
- DC Moving Coil 57mm 44mm 45.7mm ±1.5 % 0°C +60°C - - - -
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