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We’re Exhibiting at EDS 2025
The Engineering Design Show, 8 – 9 October 2025, Coventry Building Society Arena, UK, Stand J3
The IRN50 flat and narrow type metal clad wire wound resistor series from RARA, offers a power rating of up to 50W on a heat sink and available resistance values between 1Ω and 420Ω. These high power and low inductance resistors are designed for industrial and other applications where space is at a premium, the flat design also allows for excellent heat dissipation. The IRN50 series from RARA offers an extruded aluminium housing which provides strong and rugged protection, with options of cement or silicone filling materials as well as tolerances as low as ±0.5%. This resistor series offers a temperature range from -55°C up to +200°C (cement filling material).
Typical applications for the IRN series include:
| Weight | 100.00000 kg |
|---|---|
| Dimensions | 10.00 x 60.00 x 70.00mm |
| Product Type | |
| Series / Model | |
| Power Rating | |
| Minimum Resistance | 1Ω |
| Maximum Resistance | 420Ω |
| Tolerance | |
| Temperature Coefficient | |
| Insulation Resistance | 20MΩ minimum |
| Filling Material | Cement, Silicone |
| Lead Length | Custom (mm) |
| Temperature Range (°C) | -55 to +150°C (Silicone), -55 to +200°C (Cement) |
IRN50
Resistance value expressed in ohms, for example 0.5Ω or 225.5Ω.
FL XXX Flying Lead **
(Blank) Tab Terminal
* Please include required lead length with quote request, for example, FL300 for 300mm flying leads.
Thermostat options are available for these models. Please speak to an engineer for more information.
| SKU | Resistance Value | Tolerance | Filling Material | Lead Length |
|---|---|---|---|---|
| RARA IRN50 Series | Custom (1Ω - 420Ω) | ±0.5% | Cement | |
| RARA IRN50 Series | Custom (1Ω - 420Ω) | ±0.5% | Silicone | |
| RARA IRN50 Series | Custom (1Ω - 420Ω) | ±1% | Cement | |
| RARA IRN50 Series | Custom (1Ω - 420Ω) | ±1% | Silicone | |
| RARA IRN50 Series | Custom (1Ω - 420Ω) | ±10% | Cement | |
| RARA IRN50 Series | Custom (1Ω - 420Ω) | ±10% | Silicone | |
| RARA IRN50 Series | Custom (1Ω - 420Ω) | ±2% | Cement | |
| RARA IRN50 Series | Custom (1Ω - 420Ω) | ±2% | Silicone | |
| RARA IRN50 Series | Custom (1Ω - 420Ω) | ±5% | Cement | |
| RARA IRN50 Series | Custom (1Ω - 420Ω) | ±5% | Silicone |
| Product name | Dimensions | Power Rating | Minimum Resistance | Maximum Resistance | Tolerance | Temperature Coefficient | Datasheet | ||
|---|---|---|---|---|---|---|---|---|---|
| RARA IRN50 | 10.00 x 60.00 x 70.00mm | 50W | 1Ω | 420Ω | ±0.5%, ±1%, ±2%, ±5%, ±10% | ±260 ppm/°C | View Product | |
|
| RARA IRN100 | 10.00 x 60.00 x 120.00mm | 100W | 1Ω | 1.1kΩ | ±0.5%, ±1%, ±2%, ±5%, ±10% | ±260 ppm/°C | View Product | |
|
| RARA IRN150 | 10.00 x 60.00 x 170.00mm | 150W | 1Ω | 1.75kΩ | ±0.5%, ±1%, ±2%, ±5%, ±10% | ±260 ppm/°C | View Product |
