Schneider LC1DWK12P7 Capacitor Contactor

It is a dedicated capacitor contactor of Schneider TeSys D series, designed for inrush-free switching of three-phase capacitor banks in low-voltage reactive power compensation systems. Capacitate nominală: 63kvar@400V/50Hz, tensiunea bobinei: 230V și.

1. Model Breakdown Explanation

2. Core Specification Parameter Table

3. Optional Accessories List

4. Competitor & Comparație echivalentă între mărci

5. Ghid de selecție & Soluții alternative

5.1 Three Key Selection Factors

Capacitor Capacity Matching: ≤63kvar for 400V system; ≤104kvar for 690V system, avoid overload

Tensiunea bobinei: Ensure control circuit voltage matches P7 (230V); optional M7(220V)/U7(240V), etc.

Frecvența de operare: ≤240 cycles/hour for dynamic compensation; select higher specification or dedicated solution if exceeded

5.2 Recommended Alternative Solutions

5.3 Instalare & Sfaturi de întreținere

1. Wiring distance to capacitor bank ≤ 2m, reduce line inductance to guarantee inrush suppression effect
2. Asigurați o bună disipare a căldurii; reserve ≥50mm clearance around the contactor
3. Inspect damping resistor regularly (once a year); replace in time if abnormal
4. When auxiliary contacts are used in control circuit, pay attention to contact capacity (5A@230V AC)

LC1DWK12P7 is a dedicated capacitor contactor developed by Schneider for low-voltage reactive power compensation. Its core advantage lies in built-in damping resistor and early-make pole technology, which effectively suppresses switching inrush current and extends the service life of capacitors and contacts. It is widely applied in industrial workshops, clădiri comerciale, data centers and other occasions requiring power factor improvement, and is an ideal choice for reactive power compensation cabinets.

Schneider Capacitor Contactor Model List (TeSys D Series)

1. Prezentare generală a produsului

Schneider TeSys D series capacitor contactors are specially designed for low-voltage reactive power compensation systems. Adopting early-make pole + pre-connected damping resistor technology, they effectively suppress capacitor switching inrush current (≤20× rated current), protect capacitors and contacts, and prolong service life.

Main series:

LC1DWK: 63kvar@400V/50Hz

LC1DTK: 40kvar@400V/50Hz

All models: 3P(3NU) contactele principale, 1NO+2NC auxiliary contacts, AC coil only (no DC coil version).

2. Regula de denumire a modelului

3. Lista completă de modele

3.1 LC1DWK Series (63kvar@400V/50Hz)

3.2 LC1DTK Series (40kvar@400V/50Hz)

4. Coil Voltage Code Comparison Table

5. Core Technical Parameter Comparison
   

   Parametru	LC1DWK12 Series	LC1DTK12 Series	Observații
   Capacitate nominală	63kvar@400V/50Hz	40kvar@400V/50Hz	Rated at ambient temperature ≤60°C
   Curent nominal	90A@400V	58A@400V	Calculated by I=Q/(3​×U)
   Numărul de poli	3P(3NU)	3P(3NU)	Normally open main contacts, three-phase dedicated
   Contacte auxiliare	1NU+2NC	1NU+2NC	Instant action for control circuit interlocking
   Tip de montare	35mm șină DIN / screw	35mm șină DIN / screw	WK width 85mm; TK width 70mm
   Clasa de protectie	IP20	IP20	Previne contactul degetelor cu piesele sub tensiune
   Frecvența de operare	Max. 240 cycles/h	Max. 240 cycles/h	Meets dynamic compensation demand
   Temperatura ambiantă	-5°C~+60°C	-5°C~+60°C	Derating required beyond range
   Durata de viață	10 million / 100,000 cicluri	10 million / 100,000 cicluri	Under rated conditions
   Mechanical / Electric

   Selecţie & Recomandare de înlocuire

6.1 Three Core Selection Principles

Capacity Matching: Select TK for 40kvar, WK for 63kvar; no overload allowed in 400V system

Tensiunea bobinei: Match control voltage with code (M7=220V for China; P7=230V for Europe)

Frecvența de operare: ≤240 cycles/h for dynamic compensation; choose higher specification or thyristor switch if over limit

6.2 Soluții alternative

Large capacity compensation (>63kvar@400V): Standard contactor (de ex. LC1D40P7) + 6% reactor combination

Ultra-high frequency switching (>240 cycles/h): Thyristor switch (de ex. ATS48 series), no mechanical wear

Cost-sensitive projects: Domestic capacitor contactors (de ex. Chint NC1 series), cost-effective with full basic functions