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.

SKU: 411 Category:
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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

Product Documents