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. 739-6465
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. 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. 739-6443
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. 883-8156
Mfr. Part No.FN5020-25-33
BrandSchaffner
SGD1,282.06
Each
units
1000 V dc FN 5020 25A 6 → 15kHz 410 x 200 x 163mm 200mm 163mm 410mm +100°C -25°C
RS Stock No. 883-8171
Mfr. Part No.FN5040-115-87
BrandSchaffner
SGD3,205.22
Each
units
500 V ac FN 5040 115A 3 (Min)kHz 300 x 236 x 257mm 236mm 257mm 300mm +70°C -25°C
RS Stock No. 754-6109
Mfr. Part No.FN5040-24-84
BrandSchaffner
SGD882.15
Each
units
500 V ac FN5040 24A 16kHz 190 x 116 x 224mm 116mm 224mm 190mm +70°C -25°C
RS Stock No. 883-8323
Mfr. Part No.FN530-8-99
BrandSchaffner
SGD1,416.45
Each
units
850 V dc FN 530 8A 6 → 20kHz 390 x 90 x 180mm 90mm 180mm 390mm +100°C -25°C
RS Stock No. 702-4050
Mfr. Part No.B84143V16R127
BrandEpcos
SGD1,050.90
Each
units
520 V ac - 16A 8kHz - - - - - -
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. 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. 883-8222
Mfr. Part No.FN5045-1200-99
BrandSchaffner
SGD31,376.17
Each
units
500 V ac FN 5045 1.2kA 2 (Min)kHz 1280 x 794 x 498mm 794mm 498mm 1280mm +70°C -25°C
RS Stock No. 754-6095
Mfr. Part No.FN5040-10-83
BrandSchaffner
SGD520.21
Each
units
500 V ac FN5040 10A 16kHz 155 x 94 x 208mm 94mm 208mm 155mm +70°C -25°C
RS Stock No. 883-8216
Mfr. Part No.FN5040-8-82
BrandSchaffner
SGD481.18
Each
units
500 V ac FN 5040 8A 4 (Min)kHz 155 x 84 x 212mm 84mm 212mm 155mm +70°C -25°C
RS Stock No. 739-6430
Mfr. Part No.LR3 40-4/16
BrandBlock
SGD140.97
Each
units
690 V ac LR3 16A - 120 x 95 x 140mm 95mm 140mm 120mm +40°C -10°C
RS Stock No. 866-1795
Mfr. Part No.3AFSAP400-007.060
BrandFUSS-EMV
SGD1,241.60
Each
units
3 x 500 V ac 3AFSAP400 7A - 205 x 147 x 268mm 147mm 268mm 205mm +40 (without power derating) °C, +60 (with power derating) °C +40 (with power derating) °C, -20 (without power derating) °C
RS Stock No. 739-6459
Mfr. Part No.LR3 40-4/40
BrandBlock
SGD284.95
Each
units
690 V ac LR3 40A - 185 x 102 x 210mm 102mm 210mm 185mm +40°C -10°C
RS Stock No. 739-6415
Mfr. Part No.MR3 400/48
BrandBlock
SGD299.50
Each
units
690 V ac MR3 48A 8kHz 185 x 102 x 210mm 102mm 210mm 185mm +40°C -10°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. 739-6386
Mfr. Part No.MR3 400/6
BrandBlock
SGD99.75
Each
units
690 V ac MR3 6A 8kHz 96 x 69 x 117mm 69mm 117mm 96mm +40°C -10°C
RS Stock No. 883-8311
Mfr. Part No.FN530-16-99
BrandSchaffner
SGD1,999.63
Each
units
850 V dc FN 530 16A 6 → 20kHz 350 x 140 x 230mm 140mm 230mm 350mm +100°C -25°C
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