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.


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Omschrijving Prijs 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-stocknr. 187-5367
FabrikantnummerPhMKP400.3.12,50-S64
FabrikantVishay
162,06 €
Each (In a Box of 9)
Aantal stuks
400V ac 12.5kvar - 3 3 x 82.9µF Polypropylene Stud Mount PhMKP - 67.6mm 265mm - +65°C -5%
RS-stocknr. 135-3622
FabrikantnummerPhMKP525.3.25,00-A84
FabrikantVishay
160,44 €
Each
Aantal stuks
525V ac - - - 3 x 96.2µF Polypropylene Screw Mount phMKP - - 265mm - +65°C -5%
RS-stocknr. 187-5370
FabrikantnummerPhMKP440.3.25,00-S84
FabrikantVishay
245,81 €
Each (In a Box of 4)
Aantal stuks
440V ac 25kvar - 3 3 x 137µF Polypropylene Stud Mount PhMKP - 88.2mm 265mm - +65°C -5%
RS-stocknr. 187-5368
FabrikantnummerPhMKP400.3.20,00-S84
FabrikantVishay
181,785 €
Each (In a Box of 4)
Aantal stuks
400V ac 20kvar - 3 3 x 132.6µF Polypropylene Stud Mount PhMKP - 88.2mm 265mm - +65°C -5%
RS-stocknr. 187-5375
FabrikantnummerPhMKP660.3.22,90-S84
FabrikantVishay
261,96 €
Each (In a Box of 4)
Aantal stuks
660V ac 22.9kvar - 3 3 x 55.8µF Polypropylene Stud Mount PhMKP - 88.2mm 340mm - +65°C -5%
RS-stocknr. 135-3611
FabrikantnummerGLI 1450-40 I
FabrikantVishay
55,933 €
Each (In a Box of 4)
Aantal stuks
1.45kV dc - - - 40µF - Plug In GLI - - 56mm -40°C +80°C -
RS-stocknr. 187-5373
FabrikantnummerPhMKP525.3.20,00-S84
FabrikantVishay
140,775 €
Each (In a Box of 4)
Aantal stuks
525V ac 20kvar - 3 3 x 77µF Polypropylene Stud Mount PhMKP - 88.2mm 265mm - +65°C -5%
RS-stocknr. 135-3614
FabrikantnummerPhMKP400.3.25,00-A84
FabrikantVishay
181,25 €
Each
Aantal stuks
400V ac - - - 3 x 165.8µF - Screw Mount phMKP - - 265mm - +65°C -
RS-stocknr. 135-3605
FabrikantnummerHDMKP 1.1-420 I
FabrikantVishay
156,043 €
Each (In a Box of 4)
Aantal stuks
1.1kV dc - - - 420µF - Plug In HDMKP - - - -40°C +80°C -
RS-stocknr. 187-5379
FabrikantnummerPhMKP400.3.20,00-S84
FabrikantVishay
137,70 €
Each
Aantal stuks
400V ac 20kvar - 3 3 x 132.6µF Polypropylene Stud Mount PhMKP - 88.2mm 265mm - +65°C -5%
RS-stocknr. 135-3628
FabrikantnummerGLI 1450-40 I
FabrikantVishay
56,88 €
Each
Aantal stuks
1.45kV dc - - - 40µF - Plug In GLI - - 56mm -40°C +80°C -
RS-stocknr. 135-3616
FabrikantnummerPhMKP440.3.28,10-A84
FabrikantVishay
177,08 €
Each
Aantal stuks
440V ac - - - 3 x 154µF - Screw Mount phMKP - - 265mm - +65°C -
RS-stocknr. 135-3623
FabrikantnummerGLI 700-230 B
FabrikantVishay
273,93 €
Each
Aantal stuks
700V dc - - - 230µF - Plug In GLI - - 68mm -40°C +80°C -
RS-stocknr. 135-3607
FabrikantnummerHDMKP 2.0-390 I
FabrikantVishay
303,958 €
Each (In a Box of 4)
Aantal stuks
2kV dc - - - 390µF - Plug In HDMKP - - 235mm -40°C +80°C -
RS-stocknr. 187-5383
FabrikantnummerPhMKP440.3.25,00-S84
FabrikantVishay
185,90 €
Each
Aantal stuks
440V ac 25kvar - 3 3 x 137µF Polypropylene Stud Mount PhMKP - 88.2mm 265mm - +65°C -5%
RS-stocknr. 135-3617
FabrikantnummerHDMKP 1.1-420 I
FabrikantVishay
156,04 €
Each
Aantal stuks
1.1kV dc - - - 420µF - Plug In HDMKP - - - -40°C +80°C -
RS-stocknr. 187-5393
FabrikantnummerPhMKP660.3.22,90-S84
FabrikantVishay
204,30 €
Each
Aantal stuks
660V ac 22.9kvar - 3 3 x 55.8µF Polypropylene Stud Mount PhMKP - 88.2mm 340mm - +65°C -5%
RS-stocknr. 135-3613
FabrikantnummerPhMKP400.3.20,00-A84
FabrikantVishay
125,00 €
Each
Aantal stuks
400V ac - - - 3 x 132.6µF - Screw Mount phMKP - - 265mm - +65°C -
RS-stocknr. 187-5377
FabrikantnummerPhMKP400.3.12,50-S64
FabrikantVishay
151,50 €
Each
Aantal stuks
400V ac 12.5kvar - 3 3 x 82.9µF Polypropylene Stud Mount PhMKP - 67.6mm 265mm - +65°C -5%
RS-stocknr. 187-5371
FabrikantnummerPhMKP440.3.28,10-S84
FabrikantVishay
262,388 €
Each (In a Box of 4)
Aantal stuks
440V ac 28.1kvar - 3 3 x 154µF Polypropylene Stud Mount PhMKP - 88.2mm 265mm - +65°C -5%