Current Transformers · GTA20L Miniature Series
GTA20L Precision Miniature Current Transformer 10A–100A
GTA20L precision miniature current transformers with eight formal models, 10A–100A AC input and 20mA AC output.
8 modelsGTA20L0.5 through GTA20L5.0
10A-100A ACModel-specific rated input
20mA ACRated output
50/60HzSupplier-listed frequency
Product Overview
The GTA20L miniature current-transformer family provides eight exact models with model-specific AC input ratings, 20mA AC output and documented ratio mappings. Model-specific phase, linearity, resistance and mechanical values remain separate.
Key Features
- Eight formal GTA20L models
- 10A AC to 100A AC rated input by model
- 20mA AC rated output across all listed models
- Model-specific ratio and linear-range data
- Primary conductor through center aperture with lead-wire secondary output
Available Models / Configurations
Select the exact GTA20L model by rated input, 20mA AC output and documented ratio.
| Model | Rated Input | Rated Output | Ratio |
|---|---|---|---|
| GTA20L0.5 | 10A AC | 20mA AC | 500:1 |
| GTA20L1.0 | 20A AC | 20mA AC | 1000:1 |
| GTA20L1.5 | 30A AC | 20mA AC | 1500:1 |
| GTA20L2.0 | 40A AC | 20mA AC | 2000:1 |
| GTA20L2.5 | 50A AC | 20mA AC | 2500:1 |
| GTA20L3.0 | 60A AC | 20mA AC | 3000:1 |
| GTA20L4.0 | 80A AC | 20mA AC | 4000:1 |
| GTA20L5.0 | 100A AC | 20mA AC | 5000:1 |
Technical Specifications
| Model | Phase Error | Linear Range RL=20Ω | Linear Range RL=50Ω | Linearity Error | DC Resistance | Net Weight |
|---|---|---|---|---|---|---|
| GTA20L0.5 | ≤10′ at RL=20Ω | 0–20A | 0–10A | 0.5% | 13 ± 6Ω | 16.5g |
| GTA20L1.0 | ≤5′ at RL=20Ω | 0–60A | 0–40A | 0.1% | 32 ± 6Ω | 17.6g |
| GTA20L1.5 | ≤5′ | 0–60A | 0–40A | 0.1% | 65 ± 10Ω | 18.8g |
| GTA20L2.0 | ≤5′ | 0–80A | 0–70A | 0.1% | 122 ± 15Ω | 17.3g |
| GTA20L2.5 | ≤5′ | 0–90A | 0–80A | 0.1% | 160 ± 20Ω | 18.8g |
| GTA20L3.0 | ≤5′ | 0–110A | 0–90A | 0.1% | 187 ± 20Ω | 18.8g |
| GTA20L4.0 | ≤5′ | 0–130A | 0–120A | 0.1% | 314 ± 30Ω | 19.2g |
| GTA20L5.0 | ≤5′ | 0–130A | 0–120A | 0.1% | 470 ± 50Ω | 19g |
| Parameter | Supplier-Listed Value |
|---|---|
| Flame Retardancy | UL94-V0 |
| Insulation Resistance | >1000MΩ |
| Voltage Class | 0.66 / 0.72kV |
| Withstand Voltage | 4kV / 50Hz / 1min |
| Frequency | 50/60Hz |
| Operating Temperature | -40°C to +70°C |
| Potting Material | Epoxy Resin |
| Installation | Primary conductor passes through center aperture; secondary winding uses lead-wire output |
| Outer Diameter | Φ26 mm |
| Overall Height | 28.4 mm |
| Center Aperture | Φ8.5 mm |
| Lead Length | 200 mm |
Applications
The supporting image shows a general application environment and does not depict an exact installed configuration.
Power-monitoring electronics
AC current sensing where the selected GTA20L input, 20mA output and load conditions match the measurement circuit.
Measurement and control equipment
Miniature current-transformer input for compatible industrial monitoring and control electronics.
OEM current-measurement circuits
Through-aperture AC current sensing after the exact model and secondary load are confirmed.
Information to Confirm for Selection
- Required GTA20L model and rated AC input
- 20mA AC receiving interface
- Required ratio and model-specific linear range
- Center-aperture fit and lead-wire connection
- Secondary-load condition, quantity and application
FAQ
What GTA20L models are available?
GTA20L0.5, GTA20L1.0, GTA20L1.5, GTA20L2.0, GTA20L2.5, GTA20L3.0, GTA20L4.0 and GTA20L5.0 are listed.
What is the rated output?
The supplier technical table lists 20mA AC rated output for all eight formal GTA20L models.
How is the transformer installed?
The primary conductor passes through the center aperture and the secondary winding uses lead-wire output.
Can the secondary circuit be left open?
No. Connect the secondary load before energizing the primary conductor and do not operate the current transformer with the secondary circuit open.
What should I provide for a quotation?
Provide the required GTA20L model, rated input, quantity and application.
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Provide the required GTA20L model, rated input, 20mA receiving interface, quantity and application.