Sinusoidal Filters

Sinusoidal filters are passive components used to provide electrical circuits with the correct frequencies to ensure optimal performance. These elements, also called sine wave filters, are low pass devices which means they let low-frequency signals pass but block or impede high-frequency signals.

Circuits requiring longer cables usually have sinusoidal filters to convert rectangular pulse width modulation (PWM) signals into smooth wave voltage. This will prevent premature circuit damage and prolong the lifespan of AC motor drives by reducing stress on the motor's insulation.

What are sinusoidal filters used for?

Sinusoidal filters protect motor windings and bearings from damage due to voltage spikes, cable stripping, current loss and overheating.

These filters are used in equipment such as pumps, ventilators, conveyors, compressors, elevators and cranes.

Types of sinusoidal filters

Enclosed or open panel versions exist:

  • Enclosed filters come in pre-packed boxes and can be installed onsite for immediate use without any adjustments, mounting or wiring needed.
  • Open panel filters are assembled leaving the back panel accessible for the user to mount and wire as preferred.

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Filters

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Description Price Maximum Voltage Rating Series Maximum Current Rating Switching Frequency Dimensions Depth Height Length Maximum Operating Temperature Minimum Operating Temperature
RS Stock No. 739-6443
Mfr. Part No.LR3 40-4/25
BrandBlock
SGD205.26
Each
units
690 V ac LR3 25A - 155 x 110 x 177mm 110mm 177mm 155mm +40°C -10°C
RS Stock No. 457-6264
Mfr. Part No.RWK 305-10-KL
BrandSchaffner
SGD230.13
Each
units
400 V ac RWK 305 10A 2 → 16kHz 100 x 70 x 115mm 70mm 115mm 100mm +100°C -25°C
RS Stock No. 739-6465
Mfr. Part No.LR3 40-4/63
BrandBlock
SGD345.62
Each
units
690 V ac LR3 63A - 185 x 122 x 210mm 122mm 210mm 185mm +40°C -10°C
RS Stock No. 883-8226
Mfr. Part No.FN5045-17-33
BrandSchaffner
SGD907.20
Each
units
500 V ac FN 5045 17A 4 (Min)kHz 440 x 160 x 245mm 160mm 245mm 440mm +70°C -25°C
RS Stock No. 883-8235
Mfr. Part No.FN5045-180-99
BrandSchaffner
SGD5,124.85
Each
units
500 V ac FN 5045 180A 3 (Min)kHz 650 x 500 x 400mm 500mm 400mm 650mm +70°C -25°C
RS Stock No. 739-6364
Mfr. Part No.SFB 400/16,5
BrandBlock
SGD794.51
Each
units
520 V ac SFB 16.5A 8kHz 160 x 190 x 185mm 190mm 185mm 160mm +40°C -
RS Stock No. 883-8317
Mfr. Part No.FN530-12-99
BrandSchaffner
SGD1,754.90
Each
units
850 V dc FN 530 12A 6 → 20kHz 390 x 90 x 215mm 90mm 215mm 390mm +100°C -25°C
RS Stock No. 739-6355
Mfr. Part No.SFB 400/10
BrandBlock
SGD690.51
Each
units
520 V ac SFB 10A 8kHz 120 x 155 x 160mm 155mm 160mm 120mm +40°C -
RS Stock No. 883-8159
Mfr. Part No.FN5020-55-34
BrandSchaffner
SGD2,889.96
Each
units
1000 V dc FN 5020 55A 6 → 15kHz 554 x 250 x 203mm 250mm 203mm 554mm +100°C -25°C
RS Stock No. 457-6292
Mfr. Part No.RWK 305-32-KL
BrandSchaffner
SGD367.43
Each
units
400 V ac RWK 305 32A 2 → 16kHz 95 x 155 x 195mm 95mm 195mm 155mm +100°C -25°C
RS Stock No. 866-1877
Mfr. Part No.3AFU400-125
BrandFUSS-EMV
SGD833.60
Each
units
3 x 500 V ac 3AFU400 125A - 220 x 214 x 540mm 214mm 540mm 220mm +40°C -
RS Stock No. 866-1791
Mfr. Part No.3AFSAP400-2,5.060
BrandFUSS-EMV
SGD804.80
Each
units
3 x 500 V ac 3AFSAP400 2.5A - 193 x 118 x 268mm 118mm 268mm 193mm +40 (without power derating) °C, +60 (with power derating) °C +40 (with power derating) °C, -20 (without power derating) °C
RS Stock No. 739-6428
Mfr. Part No.LR3 40-4/8
BrandBlock
SGD110.10
Each
units
690 V ac LR3 8A - 120 x 85 x 140mm 85mm 140mm 120mm +40°C -10°C
RS Stock No. 883-8260
Mfr. Part No.FN5045-75-35
BrandSchaffner
SGD2,554.01
Each
units
500 V ac FN 5045 75A 3 (Min)kHz 615 x 370 x 203mm 370mm 203mm 615mm +70°C -25°C
RS Stock No. 883-8210
Mfr. Part No.FN5045-10-44
BrandSchaffner
SGD647.17
Each
units
500 V ac FN 5045 10A 4 (Min)kHz 330 x 100 x 165mm 100mm 165mm 330mm +70°C -25°C
RS Stock No. 866-1868
Mfr. Part No.3AFU400-080
BrandFUSS-EMV
SGD737.60
Each
units
3 x 500 V ac 3AFU400 80A - 220 x 214 x 540mm 214mm 540mm 220mm +40°C -
RS Stock No. 739-6377
Mfr. Part No.MR3 400/4
BrandBlock
SGD97.62
Each
units
690 V ac MR3 4A 8kHz 78 x 63 x 100mm 63mm 100mm 78mm +40°C -10°C
RS Stock No. 739-6437
Mfr. Part No.LR3 40-4/10
BrandBlock
SGD108.87
Each
units
690 V ac LR3 10A - 120 x 85 x 140mm 85mm 140mm 120mm +40°C -10°C
RS Stock No. 883-8250
Mfr. Part No.FN5045-48-34
BrandSchaffner
SGD1,877.96
Each
units
500 V ac FN 5045 48A 4 (Min)kHz 515 x 310 x 153mm 310mm 153mm 515mm +70°C -25°C
RS Stock No. 457-6270
Mfr. Part No.RWK 305-17-KL
BrandSchaffner
SGD274.95
Each
units
400 V ac RWK 305 17A 2 → 16kHz 80 x 125 x 140mm 80mm 140mm 125mm +100°C -25°C
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