Delixi CDC19s Capacitor Contactor 25A-170A 3P for Power Factor Correction

Name: DELIXI CDC19s Switching Capacitor AC Contactor
Brand: DELIXI

Description

Delixi CDC19s capacitor contactor is designed for switching capacitor banks in reactive power compensation systems. It is widely used in power factor correction cabinets, low-voltage capacitor switching assemblies and industrial distribution systems where frequent capacitor switching requires stable and reliable contactor performance.

1. Product overview

The CDC19s series is a dedicated capacitor switching contactor for low-voltage reactive power compensation. It supports multiple frame ratings from 25A to 170A and is commonly used in capacitor compensation panels for commercial buildings, factories and power distribution projects.

2. Main features

Specially designed for capacitor switching and power factor correction applications
Available ratings include 25A, 32A, 43A, 63A, 95A, 115A, 150A and 170A
3-pole main circuit design
Control coil voltage options include 110V, 220V and 380V
Auxiliary contact combinations include 1NO+1NC, 2NO, 2NC, 2NO+1NC and 3NO+2NC depending on model
Rated insulation voltage up to 690V
Suitable for AC 50Hz / 60Hz systems
Used for automatic capacitor bank switching in reactive power compensation panels

3. Technical specifications

Item	Specification
Series	CDC19s
Product type	Capacitor Contactor
Application	Power factor correction
Poles	3P
Rated operational voltage Ue	380/400V
Rated insulation voltage Ui	690V
Control circuit voltage	110V / 220V / 380V
Frequency	50Hz / 60Hz
Auxiliary contacts	11, 20, 02, 21, 32 depending on model
Standards / certification	CCC, CE

4. Capacitor switching capacity

According to the catalogue, the CDC19s series covers controlled capacitor capacity ranges from 6 kvar up to 90 kvar depending on the model and system voltage. It is suitable for 220/230V and 380/400V capacitor bank switching applications.

5. Typical applications

Reactive power compensation cabinets
Automatic capacitor bank switching systems
Low-voltage distribution panels
Industrial and commercial power factor correction projects
Electrical panels requiring repeated capacitor switching

6. Available models

The CDC19s family includes CDC19s-25, 32, 43, 63, 95, 115, 150 and 170. Different model suffixes indicate auxiliary contact configuration and coil voltage code.

7. Ordering support

If you need help selecting the right CDC19s model, send us your capacitor bank capacity, working voltage, auxiliary contact requirement and coil voltage. We can recommend the suitable model for your compensation panel project.

8. Original catalogue pages

The following original catalogue pages are attached below for detailed model selection, technical parameters and dimensional reference.

Additional information

Poles	3P
Capacitor Capacity (kVAr)	12 kvar, 18 kvar, 20 kvar, 30 kvar, 45 kvar, 60 kvar, 80 kvar, 90 kvar
Coil Voltage	AC 110V, AC 220V, AC 380V

Technical Datasheet & Downloads

📄 Technical Documentation & Product Specifications

Download official engineering datasheets, certified test standards (IEC / UL / CE), wiring diagrams, and dimensional drawings for DELIXI CDC19s Switching Capacitor AC Contactor.

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Official Technical Datasheet (PDF) Complete electrical ratings, tripping characteristics, dimensions, and compliance specifications.

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2D/3D CAD & Dimensional Drawings STEP, DXF, and PDF CAD drawing files for panel builders and switchgear designers.

Technical FAQ & Selection Guide

💡 Frequently Asked Technical Questions & Selection Guide

Pure engineering specifications, tripping curve parameters, and electrical selection guidance for panel builders and system designers.

AC-1 / AC-3 Duty

How to calculate contactor rating based on motor power and utilization categories (AC-1 vs AC-3 vs AC-4)?

AC-3 rating applies to standard squirrel-cage motor starting and stopping during normal run (starting current 5–7x In). For non-inductive or purely resistive heating loads, use the higher AC-1 rating. For severe inching, jogging, and plugging applications (AC-4 duty), derate the contactor or upsize by 1 to 2 frame sizes to prevent contact erosion.

Coil Voltage Selection

How to choose the correct control coil voltage, frequency, and electronic wide-voltage options?

Standard AC coils include 24V, 48V, 110V, 220V/230V, 380V at 50/60Hz. For DC control loops or PLC outputs, specify DC coils or electronic wide-range AC/DC coils (e.g. 100V–250V AC/DC) which feature built-in surge suppression, low holding power consumption, and immunity to voltage dips.

Overload Coordination

How to size and coordinate the matching thermal overload relay (TOR) for Type 2 protection?

Select a thermal overload relay whose current setting range straddles the motor full-load current (FLA). Set the dial precisely to 1.0x motor nameplate FLA. For IEC 60947-4-1 Type 2 coordination, pair the contactor and relay with backed-up upstream fuses or fast-acting MCB/MCCB to prevent welding under fault conditions.

Auxiliary & Interlocks

What auxiliary contact blocks and mechanical interlocks can be added for motor reversing?

Units feature built-in 1NO or 1NC auxiliary contacts, expandable with top-mounted 2-pole or 4-pole auxiliary contact blocks (F4 / AX) and pneumatic timer delay blocks. For forward/reverse motor starters or star-delta starter assemblies, add side-mounted mechanical interlock units (MI) with electrical interlocking.

Ambient & Altitude Derating

How do ambient temperature and installation altitude affect contactor performance?

Standard ratings are calibrated for -5°C to +40°C. For ambient temperatures exceeding 55°C or altitudes above 2000m (where reduced air density diminishes heat dissipation and dielectric insulation), derate operational current by 2% per 100m above 2000m and verify insulation voltage limits per IEC standards.