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. 739-6386
Mfr. Part No.MR3 400/6
BrandBlock
MYR331.04
Each
units
690 V ac MR3 6A 8kHz 96 x 69 x 117mm 69mm 117mm 96mm +40°C -10°C
RS Stock No. 739-6389
Mfr. Part No.MR3 400/8
BrandBlock
MYR334.29
Each
units
690 V ac MR3 8A 8kHz 96 x 69 x 117mm 69mm 117mm 96mm +40°C -10°C
RS Stock No. 739-6377
Mfr. Part No.MR3 400/4
BrandBlock
MYR259.67
Each
units
690 V ac MR3 4A 8kHz 78 x 63 x 100mm 63mm 100mm 78mm +40°C -10°C
RS Stock No. 457-6270
Mfr. Part No.RWK 305-17-KL
BrandSchaffner
MYR873.87
Each
units
400 V ac RWK 305 17A 2 → 16kHz 80 x 125 x 140mm 80mm 140mm 125mm +100°C -25°C
RS Stock No. 739-6443
Mfr. Part No.LR3 40-4/25
BrandBlock
MYR689.73
Each
units
690 V ac LR3 25A - 155 x 110 x 177mm 110mm 177mm 155mm +40°C -10°C
RS Stock No. 111-5328
Mfr. Part No.B84143V0066R227
BrandEPCOS
MYR3,664.11
Each
units
520 V ac B84143V 66A - 480 x 176 x 430mm 176mm 430mm 480mm - -
RS Stock No. 739-6424
Mfr. Part No.LR3 40-4/6
BrandBlock
MYR233.01
Each
units
690 V ac LR3 6A - 96 x 69 x 117mm 69mm 117mm 96mm +40°C -10°C
RS Stock No. 739-6430
Mfr. Part No.LR3 40-4/16
BrandBlock
MYR473.70
Each
units
690 V ac LR3 16A - 120 x 95 x 140mm 95mm 140mm 120mm +40°C -10°C
RS Stock No. 739-6373
Mfr. Part No.MR3 400/2,5
BrandBlock
MYR258.91
Each
units
690 V ac MR3 2.5A 8kHz 78 x 63 x 100mm 63mm 100mm 78mm +40°C -10°C
RS Stock No. 883-8244
Mfr. Part No.FN5045-4.5-44
BrandSchaffner
MYR1,837.73
Each
units
500 V ac FN 5045 4.5A 4 (Min)kHz 330 x 100 x 165mm 100mm 165mm 330mm +70°C -25°C
RS Stock No. 883-8229
Mfr. Part No.FN5045-115-35
BrandSchaffner
MYR12,837.23
Each
units
500 V ac FN 5045 115A 3 (Min)kHz 615 x 370 x 203mm 370mm 203mm 615mm +70°C -25°C
RS Stock No. 883-8248
Mfr. Part No.FN5045-410-99
BrandSchaffner
MYR36,878.49
Each
units
500 V ac FN 5045 410A 3 (Min)kHz 780 x 534 x 500mm 534mm 500mm 780mm +70°C -25°C
RS Stock No. 866-1836
Mfr. Part No.3AFS400-016 IG
BrandFUSS-EMV
MYR1,987.76
Each
units
3 x 500 V ac 3AFS400 16A - 210 x 180 x 300mm 180mm 300mm 210mm +40°C -
RS Stock No. 883-8232
Mfr. Part No.FN5045-260-99
BrandSchaffner
MYR24,454.78
Each
units
500 V ac FN 5045 260A 3 (Min)kHz 650 x 500 x 400mm 500mm 400mm 650mm +70°C -25°C
RS Stock No. 457-6264
Mfr. Part No.RWK 305-10-KL
BrandSchaffner
MYR768.96
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. 883-8207
Mfr. Part No.FN5040-660-99
BrandSchaffner
MYR50,410.23
Each
units
500 V ac FN 5040 660A 2 (Min)kHz 630 x 315 x 727mm 315mm 727mm 630mm +70°C -25°C
RS Stock No. 883-8260
Mfr. Part No.FN5045-75-35
BrandSchaffner
MYR9,136.93
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. 739-6395
Mfr. Part No.MR3 400/18
BrandBlock
MYR445.87
Each
units
690 V ac MR3 18A 8kHz 120 x 140 x 140mm 140mm 140mm 120mm +40°C -10°C
RS Stock No. 739-6351
Mfr. Part No.SFB 400/4
BrandBlock
MYR1,577.53
Each
units
520 V ac SFB 4A 8kHz 105 x 155 x 160mm 155mm 160mm 105mm +40°C -
RS Stock No. 866-1852
Mfr. Part No.3AFU400-010
BrandFUSS-EMV
MYR923.75
Each
units
3 x 500 V ac 3AFU400 10A - 70 x 142 x 245mm 142mm 245mm 70mm +40°C -
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