SH-T Series High Amperage Shunt Resistors
Interchangeable heavy-duty shunt resistor designed to multiply the current measurement range of ammeters and precision metering instruments
Resistance range 0.4mΩ to 16mΩ
Rated current range 50A to 12,000A across multiple sub-range variants
Rated voltage drop options of 25mV, 50mV, 60mV, 75mV, and 100mV
Tolerance options ±0.5%, ±1%, and ±5%
TCR options of 50 and 100 ppm/°C
Operating ambient temperature −25°C to +40°C, relative humidity ≤80% at 35°C
Scalable terminal and body construction across twelve current sub-ranges from 50A through to 12,000A
What are the SH-T Series High Amperage Shunt Resistors?
The SH-T is a heavy-duty interchangeable shunt resistor built for high-current measurement in power conversion equipment, industrial metering systems, and large-scale electrical installations. It operates by inserting a precision low-resistance element directly into the current-carrying conductor and measuring the resulting millivolt-level voltage drop, which a connected ammeter or data acquisition system converts into a calibrated current reading. The interchangeable construction allows the same instrument to be reconfigured for different current ranges by substituting the appropriate shunt, which is particularly useful in multi-range panel installations, test benches, and calibration facilities where flexibility and speed of range change are priorities.
The SH-T covers a rated current range of 50A to 12,000A, making it the highest-capacity member of the SH shunt family and suitable for the heaviest current measurement tasks encountered in industrial and utility power systems. The resistance range spans 0.4mΩ to 16mΩ, with the specific value determined by the combination of rated current and selected output voltage. Five voltage drop options — 25mV, 50mV, 60mV, 75mV, and 100mV — provide compatibility with the full range of panel ammeters and digital measurement instruments in common use. Physical dimensions scale substantially with rated current: lighter variants in the 50A to 600A range have body lengths from 100mm to 146mm with conductor widths from 22mm to 56mm, while mid-range models from 750A to 1200A share similar overall envelopes but with wider conductor sections. At the upper end, models rated from 5,000A to 12,000A reach body lengths of up to 300mm with conductor depths up to 70mm, reflecting the large cross-sections needed to carry and dissipate energy at kilowatt scale continuously.
Tolerance grades of ±0.5%, ±1%, and ±5% allow the SH-T to be specified for applications ranging from utility-grade revenue metering and precision power analysis through to general-purpose panel indication. The two available TCR grades of 50 ppm/°C and 100 ppm/°C enable specifiers to match thermal stability to the accuracy class of the installation, with the tighter grade appropriate where ambient temperature variation across the measurement range is significant. The operating envelope of −25°C to +40°C ambient with relative humidity up to 80% at 35°C covers the conditions found in indoor industrial switchgear, transportation power systems, and telecommunications power infrastructure.
SH-T Series High Amperage Shunt Resistors Specifications
A practical overview for engineers and procurement teams evaluating resistive solutions.
Model: SH-T
Resistor type: Current sensing
Description: High amperage shunt
Rated Current: 50A~12,000A
Resistance (Ω): 0.4m~16m
Tolerance (%): ±0.5, ±1, ±5
TCR (ppm/C): 50, 100
Applications of the SH-T Series High Amperage Shunt Resistors
Where RARA metal clad resistors are deployed in the field.
Telecommunications power equipment and rectifier systems requiring accurate DC bus current monitoring at high continuous current levels.
Electric vehicle drivetrains, traction inverters, and high-capacity battery management systems measuring charge and discharge currents in the hundreds to thousands of amperes.
Aerospace ground power units and aircraft handling equipment requiring robust, calibrated large-current shunt standards.
High-power electric vehicle charging infrastructure, including fast-charging and megawatt-class charging stations, monitoring output currents for billing accuracy and protection. Electroplating, electrolytic refining, and electrosynthesis power supplies where stable multi-kiloampere DC currents must be measured reliably over extended production runs.
Industrial panel ammeters and multi-range switchboard instruments where interchangeable shunts allow a single instrument head to cover the full range of feeder and bus currents without recalibration.
DC power systems in data centres, utility substations, and battery energy storage installations requiring continuous and accurate current supervision at the bus level.
Heavy industrial drives including rolling mill drives, arc furnace power systems, crane and hoist drives, and mine winders where currents in the thousands of amperes must be monitored for process control and protection.
Renewable energy inverters, grid-scale battery systems, and DC-coupled solar or wind generation plant requiring continuous high-current measurement at the point of energy conversion.
Related Products of the SH-T Series High Amperage Shunt Resistors
Model: FL-2C100
Resistor type: Current Sensing
Description: High amperage shunt
Rated Current: 10A~100A
Supply Voltage: 75mV
Tolerance (%): ±0.5
TCR (ppm/C): 40 max.
Model: FL-2C750
Resistor type: Current Sensing
Description: High amperage shunt
Rated Current: 10A~750A
Supply Voltage: 75mV
Tolerance (%): ±0.5
TCR (ppm/C): 40 max.
Model: RSR
Resistor type: Current Sensing
Description: CE shunt
Rated Current: 10A~10,000A
Supply Voltage: 50mV, 75mV, 100mV
Tolerance (%): ±0.5, ±1, ±5
TCR (ppm/C): 30, 50, 100
Model: SH-Fm
Resistor type: Current sensing
Description: High amperage shunt
Rated Current: 1A~2500A max.
Resistance (Ω): 0.2m~16m
Tolerance (%): ±0.1, ±1, ±5
TCR (ppm/C): 50, 100
Why Choose RARA Current Sensing Resistors
What sets RARA apart for engineers and procurement managers in industrial and automotive markets.
01
8 Sub-Categories
No other single supplier covers AEC-Q200 chip shunts, milliohm precision types, four-terminal Kelvin shunts, power metering, and 12,000A panel shunts under one ISO-certified roof.
02
Extreme Precision
HPS, UHPS, and PSS precision shunts deliver ±0.05% tolerance and 3 ppm/°C TCR — meeting the accuracy demands of EV battery coulomb counting, precision power analyzers, and billing-grade energy metering.
03
Automotive Qualified
Multiple AEC-Q200 certified models (BCS, LRA, ECS, BWR, TCS, PCBS) with IATF 16949 manufacturing certification — covering EV battery management, motor control, and charging applications.
04
Global Track Record
Trusted by Tesla, GM Korea, Proterra, Siemens, Rockwell, and Schneider Electric — deployed in EV powertrains, industrial drives, and utility metering systems across six continents.
