Single-Phase Power Capacitors Selection Guide: Technical Criteria & Application Standards
Single-Phase Power Capacitors selection guide: technical parameters, mounting and compliance standards, and Schneider Electric, Entes, Tibcon, Tense comparison.
A single-phase power capacitor is a single-phase power factor correction capacitor with two terminals, connected between phase and neutral or between two phases, that supplies reactive power and has its rating stated in kVAr. It is used in steps where each phase is corrected separately in workplaces, stores and small facilities with loads unevenly distributed between phases. In this category, cylindrical-housing models from Entes, Tibcon and Tense are available in ratings such as 0.5 kVAr, 1 kVAr, 2.5 kVAr and 5 kVAr and rated voltages of 230 V and 400 V. Choose the rating by the reactive demand of the phase concerned, the rated voltage by the voltage the capacitor will be connected to and whether the step includes a harmonic filter reactor, and the housing size by the panel layout. A capacitor with a 400 V rated voltage delivers about one third of its label rating at 230 V; calculate the step power accordingly. A motor capacitor, sold by its microfarad value, is made for the auxiliary winding of a single-phase motor and is not a substitute for a power capacitor in a power factor correction step. The Single-Phase Power Capacitors category on Welibaba includes 29 active models from leading manufacturers such as Schneider Electric, Entes, Tibcon, Tense.
Key Technical Parameters for Selecting Single-Phase Power Capacitors
To specify the right Single-Phase Power Capacitors model for your panel or installation, verify the following parameters against your engineering schedule:
| Parameter | Typical Catalog Values | Verification Note |
|---|---|---|
| Standards | IEC 60831-1&2, IS 13340, IEC 60831-1/2 | Verify against project schedule and load calculation |
| Rated Voltage | 230 V AC, 400 V, 440 V | Verify against project schedule and load calculation |
| Size Type | 40x72mm, 50x122mm, 55x132mm, 60x137mm | Verify against project schedule and load calculation |
| Voltage | 230 V AC, 400 V AC | Verify against project schedule and load calculation |
Installation, Compatibility, and Commissioning Checklist
- Electrical & Mechanical Matching: Confirm that rated voltage, current capacity, and mounting dimensions align with the upstream and downstream components in Power Capacitors.
- Environmental & Enclosure Rating: Check IP protection class, housing material, and terminal capacity for dusty, humid, or high-vibration industrial environments.
- Related Product Groups: If your application calls for a different form factor or rating, compare sibling categories such as Three-Phase Power Capacitors, Three-Phase Box Type Power Capacitors, Contactor Switching Modules.
Frequently Asked Questions
What is the first parameter to check when selecting Single-Phase Power Capacitors?
Start by confirming the circuit's rated electrical values and physical mounting dimensions, then use the technical attribute filters on the Single-Phase Power Capacitors page to narrow down compatible series.
Which Single-Phase Power Capacitors brands are available on Welibaba?
Welibaba currently stocks 29 active models in this category from manufacturers including Schneider Electric, Entes, Tibcon, Tense, complete with verified specifications and unit pricing.
How can I compare Single-Phase Power Capacitors models by manufacturer part number?
You can search directly by manufacturer SKU/order code or use the category filter panel to compare equivalent models across brands side by side.