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. 457-6264
Mfr. Part No.RWK 305-10-KL
BrandSchaffner
TWD5,191
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. 111-5328
Mfr. Part No.B84143V0066R227
BrandEPCOS
TWD43,573
Each
units
520 V ac B84143V 66A - 480 x 176 x 430mm 176mm 430mm 480mm - -
RS Stock No. 739-6351
Mfr. Part No.SFB 400/4
BrandBlock
TWD13,540
Each
units
520 V ac SFB 4A 8kHz 105 x 155 x 160mm 155mm 160mm 105mm +40°C -
RS Stock No. 739-6383
Mfr. Part No.MR3 400/10
BrandBlock
TWD3,170
Each
units
690 V ac MR3 10A 8kHz 120 x 85 x 140mm 85mm 140mm 120mm +40°C -10°C
RS Stock No. 739-6421
Mfr. Part No.LR3 40-4/4
BrandBlock
TWD1,900
Each
units
690 V ac LR3 4A - 96 x 60 x 117mm 60mm 117mm 96mm +40°C -10°C
RS Stock No. 883-8257
Mfr. Part No.FN5045-480-99
BrandSchaffner
TWD368,081
Each
units
500 V ac FN 5045 480A 3 (Min)kHz 780 x 534 x 500mm 534mm 500mm 780mm +70°C -25°C
RS Stock No. 739-6364
Mfr. Part No.SFB 400/16,5
BrandBlock
TWD19,590
Each
units
520 V ac SFB 16.5A 8kHz 160 x 190 x 185mm 190mm 185mm 160mm +40°C -
RS Stock No. 866-1811
Mfr. Part No.3AFSAP400-040.060
BrandFUSS-EMV
TWD44,040
Each
units
3 x 500 V ac 3AFSAP400 40A - 245 x 230 x 399mm 230mm 399mm 245mm +40 (without power derating) °C, +60 (with power derating) °C -20 (without power derating) °C, +40 (with power derating) °C
RS Stock No. 754-6102
Mfr. Part No.FN5040-38-84
BrandSchaffner
TWD36,954
Each
units
500 V ac FN5040 38A 16kHz 230 x 151 x 275mm 151mm 275mm 230mm +70°C -25°C
RS Stock No. 883-8210
Mfr. Part No.FN5045-10-44
BrandSchaffner
TWD20,208
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. 739-6437
Mfr. Part No.LR3 40-4/10
BrandBlock
TWD2,331
Each
units
690 V ac LR3 10A - 120 x 85 x 140mm 85mm 140mm 120mm +40°C -10°C
RS Stock No. 739-6428
Mfr. Part No.LR3 40-4/8
BrandBlock
TWD2,203
Each
units
690 V ac LR3 8A - 120 x 85 x 140mm 85mm 140mm 120mm +40°C -10°C
RS Stock No. 457-6292
Mfr. Part No.RWK 305-32-KL
BrandSchaffner
TWD9,340
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. 883-8311
Mfr. Part No.FN530-16-99
BrandSchaffner
TWD63,633
Each
units
850 V dc FN 530 16A 6 → 20kHz 350 x 140 x 230mm 140mm 230mm 350mm +100°C -25°C
RS Stock No. 866-1877
Mfr. Part No.3AFU400-125
BrandFUSS-EMV
TWD20,840
Each
units
3 x 500 V ac 3AFU400 125A - 220 x 214 x 540mm 214mm 540mm 220mm +40°C -
RS Stock No. 883-8305
Mfr. Part No.FN520-16-33
BrandSchaffner
TWD44,107
Each
units
288 V ac, 500 V ac FN 520 16A 6 → 20kHz 300 x 145 x 190mm 145mm 190mm 300mm +100°C -25°C
RS Stock No. 739-6386
Mfr. Part No.MR3 400/6
BrandBlock
TWD2,400
Each
units
690 V ac MR3 6A 8kHz 96 x 69 x 117mm 69mm 117mm 96mm +40°C -10°C
RS Stock No. 883-8226
Mfr. Part No.FN5045-17-33
BrandSchaffner
TWD28,328
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. 739-6373
Mfr. Part No.MR3 400/2,5
BrandBlock
TWD2,200
Each
units
690 V ac MR3 2.5A 8kHz 78 x 63 x 100mm 63mm 100mm 78mm +40°C -10°C
RS Stock No. 739-6355
Mfr. Part No.SFB 400/10
BrandBlock
TWD17,030
Each
units
520 V ac SFB 10A 8kHz 120 x 155 x 160mm 155mm 160mm 120mm +40°C -