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Braking resistor 250 Ohm 300 W SPLC-WR-250-300 for frequency converter 2.2 kW
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Product Code:
SPLC-WR-250-300
Brand:
Specialist
636,06 UAH
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Technical specifications
Description
The ceramic resistor model SPLC-WR-250-300 is most commonly used as a brake resistor for a 2.2kW frequency converter for three-phase motors of 380V — selection should be based on the frequency converter manufacturer's recommended resistor characteristics and calculated braking power of the motor. This wire wound resistor has a resistance of 250 Ohm and a power of 300W.
The WR series brake resistors are made from a ceramic tube wound with wire made of iron-chromium-aluminium alloy (default) or nichrome (on request). The ceramic body acts as an insulator and heat conductor, resistant to high temperatures and corrosion. The wire has a high specific electrical conductivity, allowing efficient dissipation of heat generated during motor braking.
| Model | SPLC-WR-250-300 |
|---|---|
| Nominal Power | 300 W |
| Nominal Resistance | 250 Ohm |
| Resistance Tolerance | ±5% (type J) ±10% (type K) |
| Nominal Load | 50-200 W, surface temperature less than 275°C; more than 200 W — 350°C |
| Short-term Overload | no visible damage ΔR ≤ ±(5%R + 0.05 Ohm) |
| Insulation Resistance | ΔR ≥ 1000 MOhm 1 min, DC 1000V |
| Withstand Voltage | No visible damage, no arc discharge ΔR ≤ ±(0.1%R + 0.05 Ohm), AC 3000V, 5 s |
| Terminal Strength | no visible damage, 45 N 30 s |
| Material | 0Cr25AL5/Cr20Ni80 |
| Protection Class | IP00 |
| Storage Temperature | from -40 to 50°C (no moisture) |
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