
TESCO AC Current Probe (411)

$1,664.19
Precision AC Current Measurement—Built for Utility Testing
TESCO’s Cat. 411 uses Hall Effect technology to accurately measure AC current while maintaining electrical isolation. It’s ideal for meter shop, substation, or field use—especially in applications where safety, space, and reliable signal output are a priority. With two different jaw styles and built-in performance features, the 411 is ready for any job.
Available as a standalone probe or with ISO 17025 calibration certification.
Description
TESCO’s AC Current Probe (Catalog No. 411) is a rugged, high-accuracy tool designed to expand the capabilities of the TESCO CT Ratio/Burden Tester (Catalog No. 1047). Whether you’re working in the field or the lab, this probe delivers fast, reliable AC current measurements up to 600A.
Key Features:
- Measurement Range: 0.2 to 600A AC
- 10mV/A for up to 60A
- 1mV/A for up to 600A
- Hook-Style Jaw Options: Easily clamp onto large conductors (accepts 2 × 500MCM) or bus bars
- Auto-Zero Button: Quick baseline reset
- Automatic Power-Off: Shuts down after 10 minutes to conserve battery
- 600V CAT III
- Double insulation
- CE Mark compliant
Specifications
Parameter | Value |
---|---|
Accuracy (60A Range) | ±1.5% of reading ±0.5A |
Phase Shift (60A) | ≤3.5° (10–20A), ≤3° (20–40A) |
Phase Shift (600A) | ≤3° (10–100A), ≤2.5° (100–400A) |
Overload Rating | 1000A continuous up to 1kHz |
Jaw Opening | 1.2″ (31mm) |
Max Conductor Size | One 1.18″ or two 0.95″ cables / 1.2″ x 0.4″ bus bars |
Dimensions | 8.8″ x 3.82″ x 1.73″ (224 x 97 x 44mm) |
Weight | 15 oz (440g) |
Battery | 9V alkaline, approx. 50-hour life |
Operating Temp | 14°F to 131°F (–10°C to 55°C) |
Storage Temp | –40°F to 176°F (–40°C to 70°C) |
Output Termination | 5 ft. cable |