Q125B Cable 125mm 3000A Split core Square Bus bar AC Current Probe

3000A Split core Busbar AC Current Probe

The Q125B is a high performance AC Current Probe with excellent transformation and low phase shift. The high quality magnetic core and uniform windings provide for accurate measurements up to 1000A AC/2000A AC/3000A AC. The Round jaw permits 125mm cable positioning. Provide excellent TRMS capabilities and reliable signal reproduction.



  • Large industrial loads
  • Measuring around cable bundles
  • Power load monitoring
  • Electrical utility
  • HVAC
  • Industrial maintenance
  • Laboratory
  • Plant maintenance
  • Cable fault tester


  • Measurement range of 1A to 3600A AC
  • Large jaw opening designed
  • Improved ergonomic design and easy operation
  • Conforms to EN 61010, 600V CAT III
  • Low phase shift for power measurement
  • Nominal range: 1 to 1000AAC, 1 to 2000AAC, 1 to 3000AAC
  • Transformation ratio: 1000:5, 2000:5, 3000:5
  • Output:5mA AC/A AC, 2.5mA AC/A AC, 1.666mA AC/A AC
  • Designed for use on DMMs, power and harmonic meters, recorders or instruments with AC current ranges
  • UL, CE mark


Electrical parameters
Ratio 1000: 1 or 2000:1 (customized)
Accuracy class 0.2%, 0.5%, 1%
Primary current 0 - 3000A AC
Secondary current 0 - 5A AC (customized)
Max. Cont. Input current 3600A
Over voltage category CAT III 600V
Output signal (AC current) 500mA,1A,2A,5A AC at nominal input current
Output signal (AC voltage) 333mV, 500mV, 1V, 5V AC at nominal input current
Frequency range 40Hz-2000Hz
Dielectric strength 3KV 50Hz/60Hz at 1 minute
Temperature range -20°C to +55°C
Output 2.5 meter cable with D01 connector
Max. voltage not insulated conductors 600 V
Standard EN 61010-1, EN 61010-2-032, IEC60044-1
Installation Clamp type
Output mode Lead output (2.5m)
Mechanical parameters
Dimensions (L x W x H)(mm) 180 x 319 x 35
Weight (g) 1100
Holding wire diameter (mm) φ125
Max. jaw opening (mm) 125
Color Black
Material PC+ABS+Polycarbonate, UL94 V0

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