DAC4 3 PHASE EMI FILTER
Model No: DAC4

DAC4 Three-Phase EMI Power Line Filter | 380/440VAC, 40A-100A EMC Noise Suppression

Three Phase EMI Filter

Delta

Rated Current：40A-100A

Low Leakage Current

Certificate：CE,ROHS

Can be customize according to customer requirements.

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TheDAC4seriesthree-phase power supply filter is designed for Delta-type circuits, which can effectively suppress electromagnetic interference in power systems and improve the operating stability of equipment. The rated current range of this series of filters is 40A to 100A, and can be customized according to needs. The maximum current can reach 1000A, which is suitable for various high-power industrial equipment.
The DAC4 three-phase EMI filter adopts terminal installation to ensure higher safety and reliability, and is suitable for use in complex electrical environments. With its excellent filtering performance and flexible customization options, the DAC4 series filter is widely used in industrial equipment, power systems and other occasions with high requirements for electromagnetic compatibility that require high power quality. Whether it is a standard configuration or a high-power customized version, the DAC4 filter can provide a reliable power purification solution to ensure smooth system operation.

Key Features

  • High conducted EMI attenuation for three-phase power systems
  • Low leakage current design for enhanced safety
  • Wide current range from 40A to 100A (factory customizable)
  • CE & ROHS certified, meeting common regulatory standards
  • Durable construction with bolt/terminal block mounting
  • Support for free samples and tailored configurations

Technical Specifications

 
Specification
Details
Model：
DAC4
Application：
Industrial / Commercial
Phase：
Three-phase
Structure：
Single-stage
Max operating voltage：
250-480VAC
Rated Current：
40A - 100A
Leakage Current：
≤ 2.0mA
Withstand voltage level：
2250VAC
Frequency Range：
50/60Hz
Operating Temperature：
-25°C ~ +85°C
Certifications：
CQC, CE
Dimensions (mm)：
120 × 100 × 50 (W×H×D)
Weight(g)：
180
Connection Type：
Bolt/Terminal Block
 
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Product Pictures

Detail Picture

DAC4 Detail PictureDAC4-D Detail Picture

Overall Dimension（±1mm)

DAC4 Overall Dimension（±1mm)
DAC4-D Overall Dimension（±1mm)

Circuit Diagram

DAC4 Circuit Diagram

Insertion loss

DAC4 Insertion loss

Technical Advantages

  • Designed to suppress conducted EMI in the 100 kHz–30 MHz frequency range (as common for three-phase noise filtering)
  • Stable operation in 50/60 Hz 3 phase systems
  • Compact yet robust for industrial installations
  • Terminal block and bolt mounting ensure reliable mechanical connection 

Customization Options 

Cable length and interface type can be customized according to customer needs. DOREXS can also customize EMI filter parameters and appearance dimensions according to customer equipment requirements. At DOREXS, everything is based on customer requirements and we are committed to creating exclusive EMI solutions for customers. 

Approvals and Compliances 

Approvals and Compliances 
 

Application 

  • CNC machine tools
  • Industrial robots
  • Solar inverters
  • Wind power generation systems
  • Electric vehicle charging stations
  • Uninterruptible power supply (UPS) systems
  • Power supply equipment for subway and light rail systems

FAQ

1. Who are we?

DOREXS was founded in 2008 and is a manufacturer focusing on EMI solutions and power quality solutions with rich industry experience. Professional R&D technical team and advanced production equipment support us to provide cost-effective products and solutions.

2. How do we ensure product quality?

Our filter products have UL, CE, ISO9001 and ROHS certifications, and each product will be subject to final inspection before leaving the factory.

3. Do we support customization?

DOREXS not only provides standard products, but also supports product appearance customization and product parameter customization. We provide cost-effective EMI solutions and power quality solutions.

4. What services can we provide?

Delivery terms: FOB, CFR, CIF, EXW, FCA
Payment currency: USD, EUR, RMB
Payment method: T/T, L/C, MoneyGram, Western Union, Cash

5. What products can I buy from you?

EMI/EMC filters, transformers, reactors, insulated wires and power sockets, etc.

How to Select a Three Phase Delta EMI Filter
Performance Metrics: Evaluate performance metrics such as insertion loss, common-mode rejection ratio, and differential-mode rejection ratio to measure filter effectiveness.
Frequency range: Ensure that the operating frequency range of the filter is consistent with the frequencies of common interference sources.
Current and Voltage Ratings: Match the filter's current and voltage ratings to those of your power system to ensure compatibility and optimal performance.
Installation requirements: Consider space constraints and installation conditions to select appropriate filter size and installation method.

Selection Guide

When selecting your DAC4 filter, consider:
  • Required current rating (40A–100A)
  • Leakage current constraints for sensitive environments
  • Required EMC test standards
  • Installation space and mounting method

Installation Instructions

  1. Connect in series with three-phase power feed lines.
  2. Ensure a proper ground connection for maximum interference suppression.
  3. Keep wiring as short as possible to reduce parasitics.
  4. Follow local electrical codes.