RCT1A and RCT5A flexible rope-type current probe

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The RCT1A flexible current probe & TA5V-5A converter allows connection to existing 1A or 5A CT metering circuits - using flexible rope-type current sensor

 These probes have great bandwidth ensuring accurate measurement even with harmonically distorted wave shapes. For all RCT1A/RCT models, a NIST, NAVLAP, NPL (UKAS) factory traceable calibration certificate and certificate of conformance is supplied. UL/CSA approved materials are used throughout. Three phase and single phase flexible AC current sensors (rope sensors) are available for fast installation in confined spaces, eliminating the need for Electrical Supply Shutdown.  Available outputs are 1A @ 2.5VA and 5A @ 0.5VA, this means long cable lengths from current sensor to signal conditioner allow these low VA ratings to be used, even when feeder cable to energy meter distances are large (up to 98 feet / 30 meters)


RCT1A & RCT5A flexible split core current transformers avoid LV & HV shutdown


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RCTi single phase current sensor  (use with TA5V-5A)

RCTi Three phase (use with TA5V-5A)


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Includes signal conditioner and power 

TA5V-1A or TA5V-5A adapter



RCT1A rope sensor current output

   RCTi single phase datasheet pdf | RCTi-3ph three phase datasheet



RCT1A & RCT5A current ranges:

100A 5000A
250A 8000A
500A 10000A
750A 15000A
1000A 20000A
1500A 25000A
2000A 30000A
2500A 40000A
4000A 50000A


Available sense coil lengths 300, 500 or 700mm
10kV optional (tested 15kV)
1A at 2.5VA, 5A at 0.5VA <1% accuracy from 5%-150% of range
Bandwidth 0.6Hz - 5kHz
12, 24, 48, 125Vdc or 110Vac, 220Vac power supply options, see *
Operating temp range Conditioner -10C to +45C  Cable/coil -20C to +80C
Safety EN61010:2001 and CE marked

RCT1A or RCT5A Flexible core current transformers with 1A or 5A output


Model RCT1A - Any ratio from 100/1A to 50000/1A

The RCT1A and RCT5A flexible current probes have 1A or 5A secondary current output - current sensing is based on a  Flexible Core Loop.   Models from 100/1A to 50000/1A, Accuracy Class 1 (1%) at 5VA. UL/CSA pending


TA5V-5A and TA5V-1A module used for converting RCTi voltage output to 5A or 1A

Model TA5V-5A output module

The TA module is used for interfacing existing voltage output RCTi and IRF flexible current probes to existing 1A or 5A metering circuits.  The TA module converts the RCTi/IRF voltage output to 0-1A or 0-5A signal.  Unlike conventional CTs, there are no open circuit hazards, these are ideal with installations in confined spaces.  The RCT1A, RCT/TA5V-5A combination simplifies installation and eliminates the need for expensive LV/HV plant shutdown.

TA5V-1A & TA5V-5A Specification summary
These modules are used to convert any voltage output current measuring device
to a 1A or 5A secondary.  Used typically with standard RCTi & IRF current probes.


Casing: Din Rail module UL94V0 and CSA approved polycarb, 105mm length
Bandwidth: 20Hz-200Hz (10Hz-50kHz at 1A)
Rating:  5VA
Phase shift: 0.04 at 50/60Hz
Accuracy: <1.0% accuracy
Input impedance: 100kohm
Accurate with waveform crest factors: 1 - 5
Input ranges: 10mV to 10V input
Power: 24Vdc, 110Vac or 230Vac power
Includes: Din Rail, PSU and output CT (5A)


Examples of RCT1A RCT5A, TA5V-5A, TA5V-1A current sensor order codes

RCT1A / range / power supply / coil length mm

100A range, 1A output with 12-24Vdc power and 300mm coil length = RCT1A / 100A / D24 / 300

RCT5A / range / power supply / coil length mm
500A range, 5A output with 12-24Vdc power and 500mm coil length = RCT5A / 500A / D24 / 500


0-5V input, 0-5A output, 90-260V ac/dc power, 5A output

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Optional 3.5mm diameter 100, 200 or 300mm sense coils

* to meet CE / UL safety requirements, an external power adapter is supplied for 125Vdc, 110Vac and 230Vac options

All products have CE, IEC, EN, ASME or BS approvals.


RCT1A rope sensor current output

   RCTi single phase datasheet pdf | RCTi-3ph three phase datasheet

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