DEA4-D Terminal Block EMI Filter
Model No: DEA4-D Terminal Block

DEA4-D 3A-20A Single Phase AC High Performance Terminal Block EMI Filter

Single Phase

Terminal Block

Rated Current：3A-20A

High Performance EMI Filter

Certificate：cUL,CQC,CE,ROHS

Can be customize according to customer requirements.

Support free samples
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The DOREXS DEA4-D EMI filter is a compact, high-performance single-phase power filterwithterminal block connections, rated for 3 A–20 A and suitable for 220 V AC / 50–60 Hz systems. Its double-filter circuit design effectively suppresses common-mode and differential-mode interference over a wide frequency range, making it suitable for various industrial, commercial, and residential equipment. It features easy installation, supports parameter customization, and samples are available for evaluation.

Key Features

  • High-attenuation EMI filter suitable for single-phase AC power supplies (220 V AC, 50/60 Hz)
  • Rated current options include 3 A / 6 A / 10 A / 20 A, with support for customized current ratings
  • Dual-circuit design for simultaneous suppression of common-mode and differential-mode interference
  • Strong interference suppression performance in the 10 kHz–30 MHz (or 100 kHz–30 MHz) noise frequency band
  • Uses terminal block (bolt/rail) connection – suitable for power entry modules or equipment enclosures, providing easy and secure installation
  • Low leakage current (typically < 0.5 mA, depending on the model)
  • Features industrial-grade safety certifications including CE, RoHS, UL/CUL, and CQC, suitable for various equipment and applications
  • Supports customization (current rating, connection method, etc.) and offers free sample testing and evaluation.

Technical Specifications

 
Specification
Details
Model：
DEA4-Terminal Block
Application：
Industrial / Commercial
Phase：
Single-phase
Structure：
Two-stage
Max operating voltage：
275VAC
Rated Current：
3 A / 6 A / 10 A / 20 A (customizable)
Leakage Current：
≤ 0.5mA
Withstand voltage level：
2150VAC
Frequency Range：
50/60Hz
Operating Temperature：
-25°C ~ +85°C
Certifications：
UL, CQC, CE
Dimensions (mm)：
97 × 56 × 45 (W×H×D)
Weight(g)：
180
Connection Type：
Terminal/blockBolt/
Insert/Power cord
 
download date sheetrequest a quote 

Product Pictures

Detail Picture

DEA4-D Detail Picture

Overall Dimension（±1mm)

DEA4-D Overall Dimension（±1mm) 

Circuit Diagram

DEA4-D Circuit Diagram

Insertion Loss

DEA4-D EMI Filter Insertion Loss — Common Mode & Differential Mode Curves

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 

Applications

  • Power supplies for industrial machinery and automation systems
  • Various AC-driven equipment: motors, pumps, fans, etc.
  • Lighting systems and LED driver power modules
  • Medical equipment, test instruments/laboratory instruments (for systems with strict requirements for leakage current and EMI suppression)
  • Household appliances, office equipment, power entry modules, switch/socket systems
  • Any equipment operating in strong electromagnetic interference environments and requiring compliance with EMC/EMI standards
 

Selection Guide

When selecting the DEA4-D EMI filter, consider the following factors:
  1. Rated Current — Choose 3 A / 6 A / 10 A / 20 A based on the maximum current of your equipment. Custom high-current versions are available.
  2. Connection Method — Terminal block (bolt/rail) connection is suitable for power entry modules or chassis mounting.
  3. Leakage Current Requirements — Standard models have a leakage current below 0.5 mA; for lower leakage requirements, please contact us for customization.
  4. Installation Environment — Ensure proper grounding and correct wiring layout for optimal filtering performance.
  5. EMI Interference Frequency Band — The DEA4-D is optimized for noise suppression in the 10 kHz–30 MHz range, suitable for switching power supplies, inverters, motor drives, LED drivers, and other systems in single-phase power systems.
  6. Certifications and Compliance — Complies with CE, RoHS, UL/CUL, CQC, and other certification requirements, making it suitable for projects with strict safety regulations.

Installation Instructions

  1. Install the DEA4-D at the AC power input using terminal blocks/bolts/DIN rails.
  2. The filter should be connected in series with the power line for optimal EMI suppression.
  3. Wiring should be kept as short as possible to reduce parasitic inductance and improve filtering efficiency.
  4. If grounding is required, ensure a reliable ground connection to prevent common-mode noise from bypassing the filter through the ground wire.
  5. If the system has multiple devices or high current loads, ensure the filter's rated current matches the system requirements.

Why Choose the DEA4-D Terminal-block Single-phase Power Filter?

Other brands of single-phase terminal block/bolt-type EMI filters are also available on the market, with rated currents ranging from 3–20 A. However, the advantages of the DEA4-D are:
  1. High cost-effectiveness
  2. Dual-circuit design for stronger suppression effect
  3. Flexible connection options (terminal block/bolt/DIN rail/cable)
  4. Wide current range and customizable options
  5. Certified with international standards such as CE, RoHS, UL/CUL, and CQC

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.Does DEA4-D support terminal-block connection?

Yes — terminal-block / bolt / rail connection method is standard, making installation fast and secure in power entry modules or chassis.

3. What frequency range does the filter cover?

The DEA4-D filter is optimized for suppressing EMI in the 10 kHz–30 MHz (or 100 kHz–30 MHz) frequency band, typical for switching power supplies, inverters, motors, LED drivers etc.

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.