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 172 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. 146-0753
Mfr. Part No.890324023006CS
£0.288
Each (In a Pack of 30)
Units
275V ac - - - 10nF - Through Hole WCAP-FTX2 13mm - 11mm -40°C +105°C -
RS Stock No. 136-5122
Mfr. Part No.C9TS6MD6137AARX
BrandKEMET
£61.851
Each (In a Box of 9)
Units
440V ac - - - 3 x 137µF - Stud Mount C9T - - 280mm -25°C +55°C -
RS Stock No. 187-5372
Mfr. Part No.PhMKP525.3.12,50-S84
BrandVishay
£151.00
Each (In a Box of 4)
Units
525V ac 12.5kvar - 3 3 x 48.1µF Polypropylene Stud Mount PhMKP - 88.2mm 190mm - +65°C -5%
New
RS Stock No. 211-2686
Mfr. Part No.BLRCH104A125B40
£63.72
Each
Units
400V ac 10.4kvar 12.5kvar 3 - - - - - - - - - -
RS Stock No. 192-3547
Mfr. Part No.B25161L0010M000
BrandEPCOS
£343.826
Each (In a Box of 10)
Units
3.6kV ac - - 1 100nF Polypropylene Stud Mount MV APP 200mm 115mm 375mm -25°C - -
RS Stock No. 187-5373
Mfr. Part No.PhMKP525.3.20,00-S84
BrandVishay
£130.63
Each (In a Box of 4)
Units
525V ac 20kvar - 3 3 x 77µF Polypropylene Stud Mount PhMKP - 88.2mm 265mm - +65°C -5%
RS Stock No. 187-5387
Mfr. Part No.PhMKP525.3.12,50-S84
BrandVishay
£100.64
Each
Units
525V ac 12.5kvar - 3 3 x 48.1µF Polypropylene Stud Mount PhMKP - 88.2mm 190mm - +65°C -5%
New
RS Stock No. 211-2687
Mfr. Part No.BLRCH125A150B40
£75.40
Each
Units
400V ac 12.5kvar 15kvar 3 - - - - - - - - - -
RS Stock No. 136-6307
Mfr. Part No.B25675A4122J500
BrandEPCOS
£83.60
Each
Units
400V ac 12.5kvar 15kvar - 3 x 82.9µF - Stud Mount MKK - - 200mm -40°C +60°C -5%
RS Stock No. 135-3623
Mfr. Part No.GLI 700-230 B
BrandVishay
£236.15
Each
Units
700V dc - - - 230µF - Plug In GLI - - 68mm -40°C +80°C -
RS Stock No. 192-3548
Mfr. Part No.B25161L0010O001
BrandEPCOS
£687.651
Each (In a Box of 10)
Units
12kV ac - - 3 100nF Polypropylene Stud Mount MV APP 470mm 115mm 400mm -25°C - -
RS Stock No. 136-5124
Mfr. Part No.C9TS6MD5685AARX
BrandKEMET
£40.24
Each
Units
440V ac - - - 3 x 68.5µF - Stud Mount C9T - - 230mm -25°C +55°C -
New
RS Stock No. 211-2811
Mfr. Part No.VLVAF6P03522AB
£19,480.53
Each
Units
400V ac 600kvar - 3 - - - - - - - - - -
RS Stock No. 136-5119
Mfr. Part No.C9TS6MD5830AARX
BrandKEMET
£30.111
Each (In a Box of 9)
Units
440V ac - - - 3 x 83µF - Stud Mount C9T - - 230mm -25°C +55°C -
RS Stock No. 187-5369
Mfr. Part No.PhMKP400.3.25,00-S84
BrandVishay
£240.31
Each (In a Box of 4)
Units
400V ac 25kvar - 3 3 x 165.8µF Polypropylene Stud Mount PhMKP - 88.2mm 265mm - +65°C -5%
New
RS Stock No. 211-2695
Mfr. Part No.BLRCH500A000B40
£240.71
Each
Units
400V ac 50kvar - 3 - - - - - - - - - -
RS Stock No. 135-3596
Mfr. Part No.PhMKP400.3.20,00-A84
BrandVishay
£71.368
Each (In a Box of 4)
Units
400V ac - - - 3 x 132.6µF - Screw Mount phMKP - - 265mm - +65°C -
RS Stock No. 187-5374
Mfr. Part No.PhMKP525.3.25,00-S84
BrandVishay
£216.423
Each (In a Box of 4)
Units
525V ac 25kvar - 3 3 x 96.2µF Polypropylene Stud Mount PhMKP - 88.2mm 265mm - +65°C -5%
RS Stock No. 187-5389
Mfr. Part No.PhMKP525.3.20,00-S84
BrandVishay
£227.60
Each
Units
525V ac 20kvar - 3 3 x 77µF Polypropylene Stud Mount PhMKP - 88.2mm 265mm - +65°C -5%
New
RS Stock No. 211-2689
Mfr. Part No.BLRCH150A180B40
£80.00
Each
Units
400V ac 15kvar 18kvar 3 - - - - - - - - - -