TDK EPCOS price list 2026

What the TDK EPCOS list covers

The cover names two groups: power factor correction capacitors, and key components. The second group is what turns capacitors into a working bank — detuning reactors, power factor controllers and the devices that switch each capacitor step in and out. Price them as one system: a quotation for capacitors alone is not comparable with one for a complete set of components.

How to read a capacitor line

• kVAr rating. The reactive power the capacitor delivers, stated at its rated voltage and frequency. Used at a lower voltage, a capacitor delivers less than its label.
• Rated voltage. Capacitors for a 415 V system are rated above it, and capacitors used behind a detuning reactor higher still, because the reactor raises the voltage across them.
• Construction and form. The capacitor type, the can size and the terminals, which decide how it mounts in the panel.
• Standard. Low-voltage power capacitors are made to IEC 60831.

Compare quotations on kVAr at the same rated voltage. A cheaper capacitor of the same kVAr at a lower rated voltage is a different product — and the wrong one if the bank is detuned.

Specifying a correction bank before you price it

1. 01Total kVAr from the load and the power factor you need to reach, usually set by the supply utility's requirement.
2. 02Number of steps, so the controller can match correction to a changing load without over-correcting.
3. 03Harmonics. Where drives, UPS and other non-linear loads are significant, the bank needs detuning reactors; 7 per cent and 14 per cent are the common choices, set by the harmonics present.
4. 04Switching, by capacitor duty contactors for normal loads, or thyristor switching where the load changes fast.
5. 05Controller, with enough step outputs for the bank and the communication the site needs.

An ordinary contactor switching a capacitor can weld its contacts on the inrush current, which is why capacitor duty is one of the eight errors in our post on the most common switchgear ordering errors.

Keeping a correction bank working

A capacitor bank loses output quietly. Capacitors age, a failed step stops contributing, and the power factor drifts down until the electricity bill shows it. Price spares and maintenance along with the bank:

• spare capacitors of the step size the bank uses, at the same rated voltage;
• spare capacitor duty contactors, which wear with every switching operation;
• periodic checks of each step's current against its rating, and of the panel's temperature and ventilation;
• a review of the bank when large drives, UPS or other non-linear loads are added, since they can call for detuning the bank never had.

List price, GST and discount

Check the terms in the list for its price basis: a list price is normally before GST, which is added to the seller's net rate, while an MRP includes all taxes. Sellers quote a discount off the list, and for a complete bank the quantity and the mix of components affect it. Compare quotations on the same kVAr, voltage, steps and components. Our guide to reading a switchgear quotation explains landed cost in full.

Buying genuine EPCOS capacitors

A capacitor that fails early, or swells under harmonics it was not built for, takes the bank's correction with it. Buy through TDK's authorised channel, check the rating plate and marking against the list, and keep the invoice trail; our guide to verifying genuine switchgear sets out the checks. For comparison, Schneider Electric's power quality products are in the Schneider Electric lists on this site.

Questions about the TDK EPCOS price list