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. 374-4595
Mfr. Part No.ACA-20PC-2-AC1-RL-C
HK$562.94
Each
units
- AC - 21.3mm 33.9mm - - 0°C +60°C - - - -
RS Stock No. 186-2487
BrandRS PRO
HK$224.41
Each
units
1 (Input)mA DC Moving Coil 72mm 72mm 54 (<4 A)mm 1 % -10°C +65°C - 0 → 1 (Input)mA 0 (Input)mA -
RS Stock No. 177-0252
Mfr. Part No.3NJ6900-4HH11
BrandSiemens
HK$446.44
Each
units
300A AC Moving Iron - - - - - - CE Certified 1 → 300A 1A 3NJ6900
RS Stock No. 914-5414
Mfr. Part No.D72MC75MV/0-30A
BrandHOBUT
HK$298.47
Each
units
0/30A For Shunt 75mV DC Moving Coil 72mm 72mm 38.5mm Class 1.5 -25°C +40°C BS89, CE, DIN 43700, DIN 43802, IEC 51, UL 94V0, UL 94V1 0/30A For Shunt 75mV 0A D72MC
RS Stock No. 186-2412
BrandRS PRO
HK$148.74
Each
units
Scale)A, 5 (Input AC Moving Iron 48mm 48mm 54 (<30 A)mm 1 % -10°C +65°C - 0 → 5 (Input, Scale)A 0 (Input, Scale)A -
RS Stock No. 186-2483
BrandRS PRO
HK$225.17
Each
units
- DC Moving Coil 48mm 48mm 54 (<30 A) mm, 72 (30 → 60 A) mm 1 % -10°C +65°C - - - -
RS Stock No. 177-0247
Mfr. Part No.3NJ6900-4HG11
BrandSiemens
HK$446.44
Each
units
250A AC Moving Iron - - - - - - CE Certified 1 → 250A 1A 3NJ6900
RS Stock No. 186-2437
BrandRS PRO
HK$147.66
Each
units
5 (Input) A, 200 (Scle) A, 200/5 (CT) A AC Moving Iron 72mm 72mm 54 (<30 A) mm, 62 (30 → 60 A) mm, 66 (100 A) mm 1 % -10°C +65°C - 0 → 200 (Scale) A, 0 → 5 (Input) A, 200/5 (CT) A 0 (Input, Scale)A -
RS Stock No. 186-2428
BrandRS PRO
HK$184.25
Each
units
80 (Input)A AC Moving Iron 48mm 48mm 54 (<30 A) mm, 72 (30 → 60 A) mm 1 % -10°C +65°C - 0 → 80 (Input)A 0 (Input)A -
RS Stock No. 220-683
Mfr. Part No.CV16X1MAS
HK$131.45
Each
units
1mA DC Moving Coil - - 28.5mm ±2 % - - - - - -
RS Stock No. 186-2506
BrandRS PRO
HK$225.17
Each
units
- DC Moving Coil 96mm 96mm 54 (<4 A) mm, 67 (5 → 60 A) mm, 67 (60 → 100 A) mm 1 % -10°C +65°C - - - -
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. 186-2452
BrandRS PRO
HK$181.78
Each
units
60 (Input)A AC Moving Iron 72mm 72mm 54 (<30 A) mm, 62 (30 → 60 A) mm 1 % -10°C +65°C - 0 → 60 (Input)A 0 (Input)A -
RS Stock No. 186-2413
BrandRS PRO
HK$162.41
Each
units
Scale)A, 10 (Input AC Moving Iron 48mm 48mm 54 (<30 A)mm 1 % -10°C +65°C - 0 → 10 (Input, Scale)A 0 (Input, Scale)A -
RS Stock No. 187-9945
Mfr. Part No.192Z1000
BrandSocomec
HK$18.08
Each
units
- - - - - - - - - - - - -
RS Stock No. 186-2438
BrandRS PRO
HK$161.92
Each
units
10 (Input)A AC Moving Iron 72mm 72mm 54 (<30 A)mm 1 % -10°C +65°C - 0 → 10 (Input)A 0 (Input)A -
RS Stock No. 186-2445
BrandRS PRO
HK$161.92
Each
units
10 (Input) A, 200/5 (CT) A, 400 (Scle) A AC Moving Iron 72mm 72mm 54 (<30 A) mm, 62 (30 → 60 A) mm, 66 (100 A) mm 1 % -10°C +65°C - 0 → 10 (Input) A, 0 → 400 (Scale) A, 200/5 (CT) A 0 (Input, Scale)A -
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. 886-2005
Mfr. Part No.PQ74-I42S2N1CAW0ST
HK$203.88
Each
units
20mA DC Moving Coil 68mm 68mm 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 4 → 20mA 4mA Sigma
RS Stock No. 886-1888
Mfr. Part No.EQ74-I1822N1CAW0ST
HK$115.12
Each
units
40A AC Moving Iron 68mm 68mm 62mm - -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 → 40A 0A Sigma
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