Power Factor Correction Capacitors

The power factor of a circuit, for individual equipment or for a larger power supply, is the measure used to determine the efficiency of the circuit. It is calculated using the real power (kW) and reactive power (kVAr) of a circuit, with the real power being that which is actually used to complete the task at hand and the reactive power being that which does not contribute to the task. The higher the power factor (between 0 and 1), the more efficient the circuit, with anything above 0.95 being considered highly efficient. For larger-scale circuits with a higher power load, such as a building's power supply, having a higher power factor results in lower excess charges from power suppliers.

What are power factor correction capacitors?

Power factor correction capacitors are used to increase the power factor of a circuit, bringing the measure closer to 1 and making the system more efficient. Capacitors are used when a lagging current - which is often found in inductive load circuits such as AC induction motors, arc welders, fluorescent lighting and air conditioning - causes the current and voltage to fall out of phase with each other and therefore generates more reactive power. Capacitors correct these variations in current and voltage input, bringing the two back to being closer in phase and improving the efficiency.

RS Components offer a range of power factor correction capacitors from industry-leading brands, including EPCOS, KEMET, Vishay and Wurth Elektronik.

Why is power factor correction important?

Power factor correction has many benefits on both the electrical systems being supplied and the bill payers. By bringing the efficiency up and reducing reactive power, grid instability can be reduced, as can costs. By reducing the reactive power generated in a system or piece of equipment, general power consumption will also decrease and this in turn leads to cost savings. Electricity bills for larger companies and factories can include additional charges, including capacitor charges and reactive power charges, which will also come down when power factor correction equipment is applied.


...
Read more Read less

Filters

Viewing 1 - 20 of 140 products
Results per page
Description Price Voltage kvar 50Hz kvar 60Hz Number of Phases Capacitance Dielectric Material Mounting Type Series Length Width Height Minimum Operating Temperature Maximum Operating Temperature Tolerance Minus
RS Stock No. 136-6325
Mfr. Part No.B25675A4252J015
BrandEPCOS
SGD186.18
Each
units
415V ac 25kvar 30kvar - 3 x 154µF - Stud Mount MKK - - 192mm -40°C +60°C -5%
RS Stock No. 136-6312
Mfr. Part No.B25675A4302J040
BrandEPCOS
SGD274.23
Each
units
440V ac 30kvar - - 3 x 164.4µF - Stud Mount MKK - - 192mm -40°C +60°C -5%
RS Stock No. 192-3578
Mfr. Part No.B32305A5202B025
BrandEPCOS
SGD269.393
Each (In a Box of 4)
units
525V ac - - 3 77µF Polypropylene Stud Mount MKD - 136 Dia.mm 200mm -40°C +65°C -5%
RS Stock No. 136-5111
Mfr. Part No.C9TS5MD6108AARX
BrandKEMET
SGD81.472
Each (In a Box of 12)
units
415V ac - - - 3 x 108µF - Stud Mount C9T - - 280mm -25°C +55°C -5%
RS Stock No. 192-3558
Mfr. Part No.B25161P0025O002
BrandEPCOS
SGD2,289.855
Each (In a Box of 10)
units
18kV ac - - 3 250nF Polypropylene Stud Mount MV APP 570mm 115mm 575mm -25°C - -
RS Stock No. 192-3576
Mfr. Part No.B32305A4302B080
BrandEPCOS
SGD280.91
Each (In a Box of 4)
units
480V ac - - 3 138µF Polypropylene Stud Mount MKD - 136 Dia.mm 245mm -40°C +65°C -5%
RS Stock No. 187-5377
Mfr. Part No.PhMKP400.3.12,50-S64
BrandVishay
SGD210.16
Each
units
400V 12.5kvar - 3 3 x 82.9µF Polypropylene Stud Mount PhMKP - 67.6mm 265mm - +65°C -5%
RS Stock No. 136-5136
Mfr. Part No.C9TS5MD6108AARX
BrandKEMET
SGD86.90
Each
units
415V ac - - - 3 x 108µF - Stud Mount C9T - - 280mm -25°C +55°C -5%
RS Stock No. 192-3573
Mfr. Part No.B32305A4282B080
BrandEPCOS
SGD289.01
Each (In a Box of 4)
units
480V ac - - 3 129µF Polypropylene Stud Mount MKD - 136 Dia.mm 230mm -40°C +65°C -5%
RS Stock No. 136-4928
Mfr. Part No.B25675A4252J080
BrandEPCOS
SGD222.40
Each (In a Box of 4)
units
480V ac 25kvar 30kvar - 3 x 115.1µF - Stud Mount MKK - - 192mm -40°C +60°C -5%
RS Stock No. 135-3602
Mfr. Part No.PhMKP525.3.25,00-A84
BrandVishay
SGD263.40
Each (In a Box of 4)
units
525V dc - - - 3 x 96.2µF Polypropylene Screw Mount phMKP - - 265mm - +65°C -5%
RS Stock No. 187-5379
Mfr. Part No.PhMKP400.3.20,00-S84
BrandVishay
SGD197.02
Each
units
400V 20kvar - 3 3 x 132.6µF Polypropylene Stud Mount PhMKP - 88.2mm 265mm - +65°C -5%
RS Stock No. 136-5120
Mfr. Part No.C9TS6MD5960AARX
BrandKEMET
SGD81.472
Each (In a Box of 12)
units
440V ac - - - 3 x 96µF - Stud Mount C9T - - 280mm -25°C +55°C -
RS Stock No. 192-3543
Mfr. Part No.B25161G0025M000
BrandEPCOS
SGD632.062
Each (In a Box of 10)
units
7.2kV ac - - 1 250nF Polypropylene Stud Mount MV APP 175mm 115mm 340mm -25°C - -
RS Stock No. 192-3548
Mfr. Part No.B25161L0010O001
BrandEPCOS
SGD1,398.606
Each (In a Box of 10)
units
12kV ac - - 3 100nF Polypropylene Stud Mount MV APP 470mm 115mm 400mm -25°C - -
RS Stock No. 192-3582
Mfr. Part No.B32305A5372B025
BrandEPCOS
SGD373.488
Each (In a Box of 4)
units
525V ac - - 3 143µF Polypropylene Stud Mount MKD - 136 Dia.mm 245mm -40°C +65°C -5%
RS Stock No. 136-5121
Mfr. Part No.C9TS6MD6110AARX
BrandKEMET
SGD85.915
Each (In a Box of 12)
units
440V ac - - - 3 x 110µF - Stud Mount C9T - - 280mm -25°C +55°C -
RS Stock No. 135-3597
Mfr. Part No.PhMKP400.3.25,00-A84
BrandVishay
SGD293.018
Each (In a Box of 4)
units
400V dc - - - 3 x 165.8µF - Plug In phMKP - - 265mm - +65°C -
RS Stock No. 136-4913
Mfr. Part No.B25675A4152J000
BrandEPCOS
SGD209.61
Each (In a Box of 4)
units
400V ac 15kvar 18kvar - 3 x 99.5µF - Stud Mount MKK - - 218mm -40°C +60°C -5%
RS Stock No. 187-5381
Mfr. Part No.PhMKP400.3.25,00-S84
BrandVishay
SGD347.16
Each
units
400V 25kvar - 3 3 x 165.8µF Polypropylene Stud Mount PhMKP - 88.2mm 265mm - +65°C -5%