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Compact nylon cased ring CT with a 20 mm aperture, sized for retrofit into existing metering panels.
Made to your specification
Available with alternative ratios, burdens up to 5 VA and accuracy classes on request. Inner diameter can be increased above 20 mm where the panel allows.
SA3R20 is a compact ring type current transformer in an injection moulded nylon case. The 20 mm inner diameter accepts standard cable and small busbar sections without reworking the panel.
The secondary is brought out to a captive screw terminal block with clear S1 and S2 marking, so polarity is unambiguous during commissioning. Ratios, burden and accuracy class are wound to order — the case dimensions stay the same across the range, which makes it straightforward to standardise on one footprint.
| Product Code | SA3R20 |
|---|---|
| Primary Current | 50A – 400A |
| Secondary Current | 5A |
| Accuracy Class | Class 1.0 |
| Burden | 2.5 VA |
| Inner Diameter | 20 mm |
| Frequency | 50 / 60 Hz |
| Insulation | 660 V, Class E |
| Mounting Type | Cable or busbar mounted |
| Application | Panel metering and load monitoring |
Values shown are for the standard build. Ratio, burden, accuracy class and aperture can be changed to order.
Request a quote
The product is preselected below. Add the ratio, burden and quantity you need and you will get a quotation with a firm lead time.
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Resin cast CT with a 100 × 30 mm window for wide busbars and higher primary currents.
