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. 739-6395
Mfr. Part No.MR3 400/18
BrandBlock
HK$853.91
Each
units
690 V ac MR3 18A 8kHz 120 x 140 x 140mm 140mm 140mm 120mm +40°C -10°C
RS Stock No. 866-1852
Mfr. Part No.3AFU400-010
BrandFUSS-EMV
HK$2,300.14
Each
units
3 x 500 V ac 3AFU400 10A - 70 x 142 x 245mm 142mm 245mm 70mm +40°C -
RS Stock No. 739-6465
Mfr. Part No.LR3 40-4/63
BrandBlock
HK$2,131.73
Each
units
690 V ac LR3 63A - 185 x 122 x 210mm 122mm 210mm 185mm +40°C -10°C
RS Stock No. 739-6383
Mfr. Part No.MR3 400/10
BrandBlock
HK$669.77
Each
units
690 V ac MR3 10A 8kHz 120 x 85 x 140mm 85mm 140mm 120mm +40°C -10°C
RS Stock No. 866-1802
Mfr. Part No.3AFSAP400-035.060
BrandFUSS-EMV
HK$12,883.43
Each
units
3 x 500 V ac 3AFSAP400 35A - 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. 739-6386
Mfr. Part No.MR3 400/6
BrandBlock
HK$502.88
Each
units
690 V ac MR3 6A 8kHz 96 x 69 x 117mm 69mm 117mm 96mm +40°C -10°C
RS Stock No. 866-1868
Mfr. Part No.3AFU400-080
BrandFUSS-EMV
HK$5,540.23
Each
units
3 x 500 V ac 3AFU400 80A - 220 x 214 x 540mm 214mm 540mm 220mm +40°C -
RS Stock No. 739-6415
Mfr. Part No.MR3 400/48
BrandBlock
HK$1,327.70
Each
units
690 V ac MR3 48A 8kHz 185 x 102 x 210mm 102mm 210mm 185mm +40°C -10°C
RS Stock No. 883-8260
Mfr. Part No.FN5045-75-35
BrandSchaffner
HK$13,861.87
Each
units
500 V ac FN 5045 75A 3 (Min)kHz 615 x 370 x 203mm 370mm 203mm 615mm +70°C -25°C
New
RS Stock No. 213-1161
Mfr. Part No.6SL3203-0CE21-0AA0
BrandSiemens
HK$972.71
Each
units
480 V SINAMICS 11.3A - 140 x 125 x 71mm - - - - -
RS Stock No. 739-6392
Mfr. Part No.MR3 400/13
BrandBlock
HK$692.53
Each
units
690 V ac MR3 13A 8kHz 120 x 85 x 140mm 85mm 140mm 120mm +40°C -10°C
RS Stock No. 739-6459
Mfr. Part No.LR3 40-4/40
BrandBlock
HK$1,270.60
Each
units
690 V ac LR3 40A - 185 x 102 x 210mm 102mm 210mm 185mm +40°C -10°C
RS Stock No. 739-6409
Mfr. Part No.MR3 400/30
BrandBlock
HK$1,247.93
Each
units
690 V ac MR3 30A 8kHz 155 x 95 x 162mm 95mm 162mm 155mm +40°C -10°C
RS Stock No. 111-5322
Mfr. Part No.B84143V0006R127
BrandEPCOS
HK$2,742.56
Each
units
520 V ac B84143V 6A - 283 x 110 x 290mm 110mm 290mm 283mm - -
RS Stock No. 702-4056
Mfr. Part No.B84143V0011R127
BrandEPCOS
HK$4,534.68
Each
units
520 V ac B84143V 11A 8kHz - - - - - -
RS Stock No. 866-1820
Mfr. Part No.3ACMF400-150.060
BrandFUSS-EMV
HK$27,320.91
Each
units
3 x 500 V ac 3ACMF400 150A - 350 x 400 x 180mm 180mm 350mm 400mm +40°C -
RS Stock No. 883-8216
Mfr. Part No.FN5040-8-82
BrandSchaffner
HK$3,387.72
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. 739-6446
Mfr. Part No.LR3 40-4/30
BrandBlock
HK$1,522.12
Each
units
690 V ac LR3 30A - 155 x 110 x 177mm 110mm 177mm 155mm +40°C -10°C
RS Stock No. 739-6389
Mfr. Part No.MR3 400/8
BrandBlock
HK$506.90
Each
units
690 V ac MR3 8A 8kHz 96 x 69 x 117mm 69mm 117mm 96mm +40°C -10°C