RH series
The RH series from RARA are metal clad wirewound resistors with an aluminium housing covering cement moulding. These resistors offers a power rating from 20W up to 50W* on a suitable heat sink and 8W or 10W in free air depending on the model. The resistance range varies depending on the model and inductivity. These range from 0.1kฮฉ to 50Kฮฉ. Full details can be found on the individual product pages. These high power resistors are available with tolerances of ยฑ0.1% (>1ฮฉ), ยฑ0.25% (>0.4ฮฉ), ยฑ0.5% (>0.2ฮฉ), ยฑ1% (>0.1ฮฉ), ยฑ2% (>0.05ฮฉ) and ยฑ5% (>0.02ฮฉ).ย All RH resistors have an operating temperature of -55ยฐC to +250ยฐC. Derating is required for reduced chassis mounting area and for high ambient temperatures.
- Metal clad wire wound resistor
- Resistance ranges available between 0.1ฮฉ and 50Kฮฉ **
- TCRs of ยฑ40 ppm/ยฐC, ยฑ50 ppm/ยฐC and ยฑ100 ppm/ยฐC ***
- Tolerances of ยฑ0.1%, ยฑ0.25%, ยฑ0.5%, ยฑ1%, ยฑ2% and ยฑ5% available
- 25C Power rating of 20W on a heat sink or 8W in free air
- 50C Power rating of 50W* on a heat sink or 10W in free air
- Insulation resistance of 20Mฮฉ minimum
- Temperature range between -55ยฐC and +250ยฐC
- High stability at conventional power ratings
- Short time overload of 5 x power rating for 5 seconds
* 30W on heat sink (178x127x51x1mm), 50W on heat sink (305x305x2mm)
** Exact ranges as per the product pages for each model.
*** ยฑ20 ppm/ยฐC is available upon request
RARA Electronics Corporation is a renowned manufacturer specialising in industrial and braking resistors. They provide high-quality, durable resistors for various industrial applications, including power generation, transport, and renewable energy sectors, ensuring reliability and efficiency in demanding operational environments. Their products are known for performance and customisation options. Please visit www.raraohm.com for more information.
- Metal clad wire wound resistor
- Resistance range between 0.27ฮฉ and 25kฮฉ
- Insulation resistance of 20Mฮฉ minimum
- Temperature range of -55ยฐC up to +250ยฐC
- Cement moulding within aluminium housing
- Short time overload of 5 x power rating is 5 seconds
- Mounts on chassis to utilise heat sink effect
- Metal clad wire wound resistor
- Resistance range between 0.1ฮฉ and 10kฮฉ
- Insulation resistance of 20Mฮฉ minimum
- Temperature range of -55ยฐC up to +250ยฐC
- Cement moulding within aluminium housing
- Short time overload of 5 x power rating is 5 seconds
- Mounts on chassis to utilise heat sink effect
- Metal clad wire wound resistor
- Resistance range between 0.68ฮฉ and 50kฮฉ
- Insulation resistance of 20Mฮฉ minimum
- Temperature range of -55ยฐC up to +250ยฐC
- Cement moulding within aluminium housing
- Short time overload of 5 x power rating is 5 seconds
- Mounts on chassis to utilise heat sink effect
- Metal clad wire wound resistor
- Resistance range between 0.2ฮฉ and 20kฮฉ
- Insulation resistance of 20Mฮฉ minimum
- Temperature range of -55ยฐC up to +250ยฐC
- Cement moulding within aluminium housing
- Short time overload of 5 x power rating is 5 seconds
- Mounts on chassis to utilise heat sink effect