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The ULH80F precision shunt resistor from RARA has a 4-terminal metal-clad design, distinguished by a high load capacity of up to 30A, 40A, 50A or 75A as well as excellent accuracy. Isolated voltage and current connections make them suitable for very precise current measurements. Current measurement is made easy by attaching the current bus directly to the source while connecting the flexible voltage measurement wires to your monitoring electronics. Units have low inductance, heavy copper terminals. The ULH F series has a temperature range of -25°C to +100°C with a temperature coefficient of up to 30ppm/°C [20°C to 60°C].
- Precision shunt resistor
- 4-terminal metal-clad design
- Resistance values of 1.3333mΩ, 2mΩ, 2.5mΩ or 3.3333mΩ
- Rated current of 30A, 40A, 50A or 75A
- TCR of up to +30 ppm/°C maximum
- Tolerance values of ±0.1%, ±0.5% or ±1.0%
- Rated voltage 100mV
- Temperature range of -25°C to +100°C
- UL Approved
Typical applications for the ULH80F Precision Shunt Resistor includes:
- Battery Test & Measurement
- Current Sensing Applications
- Industrial Power Conversion
- HEVs
- Fuel Cells
RARA IRH / ULH Series Specification Table
| Model | Rated current | Rated voltage | Resistance value | Tolerance |
|---|---|---|---|---|
| IRH / ULH 300F | 500A | 100mV | 0.2mΩ | B [±0.1%] / D [±0.5%] / F [±1%] |
| 400A | 50 / 100mV | 0.25mΩ / 0.125mΩ | B [±0.1%] / D [±0.5%] / F [±1%] | |
| 300A | 50 / 100mV | 0.333mΩ / 0.1666mΩ | B [±0.1%] / D [±0.5%] / F [±1%] | |
| IRH / ULF 200F | 250A | 100mV | 0.4mΩ | B [±0.1%] / D [±0.5%] / F [±1%] |
| 200A | 100mV | 0.5mΩ | B [±0.1%] / D [±0.5%] / F [±1%] | |
| 150A | 100mV | 0.6666mΩ | B [±0.1%] / D [±0.5%] / F [±1%] | |
| 100A | 100mV | 1mΩ | B [±0.1%] / D [±0.5%] / F [±1%] | |
| IRH / ULH 100F | 75A | 100mV | 1.3333mΩ | B [±0.1%] / D [±0.5%] / F [±1%] |
| IRH / ULH 80F | 30A / 40A / 50A / 75A | 100mV | 3.3333mΩ / 2.5mΩ / 2mΩ / 1.3333mΩ | B [±0.1%] / D [±0.5%] / F [±1%] |
RARA is a leading manufacturer of high-power and precision resistors, covering a wide range of resistance values and applications. Please visit www.raraohm.com for more information.
