Fluke i430 Flex Current Probe

Model: I430-FLEX

Measures up to 3000 Amps.

This product has been discontinued. Click here for the replacement model.


The i430 Flex is an AC current probe utilizing the Rogowski principle. The flexible and lightweight measuring head allows quick and easy installation in hard to reach areas, without batteries or an external power source.
Also available as a pack of 4 pieces of the i430 current clamp, to be used for high current measurements. The Flex clamp fits around bus bars and large or hard-to-reach conductors. This 4-pack is perfect for use with 3-phase tools such as the Fluke 430 series.
General Specifications
Probe and Cable Material

TPE rubber, reinforced insulation

UL94 V-0, Colour: RED Munsell 7.5

R 1/14
Couplings Material

Polypropylene, UL94 V-0
Probe Cable Length

610 mm
Probe Cable Diameter

12.4 mm
Probe Cable Bend Radius

40 mm
Output cable length

2.5 meters RG58
Output Connector

Safety BNC Connector
Operating Range

-20 to +90°C
Storage Temperature

-40 to +105°C
Operating Humidity

15% to 85% (non condensing)
Degree of protection (Probe)


Current Range

3000 A AC RMS
Voltage output (@1000 ARMS, 50 Hz)

85 mV

± 1% of reading

(@ 25°C, 50 Hz)
Linearity (10% to 100% of range)

± 0.2% of reading
Noise (10 Hz - 7 kHz)

1.0 mV ACRMS
Output impedance

82 Ω min
Load Impedance

50 kΩ
Internal Resistance per 100 mm probe length

10.5Ω ± 5%
Bandwidth (-3dB)

10 Hz to 7 kHz
Phase Error (45 - 65 Hz)

Position Sensitivity

± 2% of reading max.
Temperature Coefficient

± 0.08% max of reading per °C
Working Voltage (see Safety Standards section)

1000 V AC RMS or DC (head)

30 V max. (output)

Safety Specifications
Safety Standards

BS EN 61010-1 2001

BS EN 61010-2-032 2002

BS EN 61010-031 2002, 1000 VRMS, Category III, Pollution Degree 2

Use of the probe on uninsulated conductors is limited to 1000 V ACRMS or DC and frequencies below 1 kHz.

Please note that this probe is designed to work with Fluke 435, if used with other products

safety rating for the output to earth is limited to 600V ACRMS or DC.

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