DBA4 EMI filter
Model No: DBA4.

DBA4 EMI Filter | Single-phase 10A-30A , Bolt,Compact Multi-purpose EMI Filter

Rated Current：10A-30A

Single Phase EMI Filter

Certificate：cUL,CQC,CE,ROHS

Can be customize according to customer requirements.

Support free samples
Quantity :
Contact Now
 
DBA4 220V EMI filters are designed to reduce electromagnetic interference and improve electrical signal quality in industrial and commercial environments. Compatible with a wide range of electronic devices, DBA4 EMI filters can handle currents up to 30 amps.
Available in a variety of mounting options, including bolt-on and bayonet mounting, DBA4 EMI filters prevent interruptions and damage caused by electrical noise, ensuring reliable operation of sensitive electronic equipment. With its high rejection of high-frequency interference, it is ideal for medical equipment, laser cutting machines, data centers, and other environments where clean energy is critical. Trust our EMI filters to protect your investment and increase productivity.

Key Features

  • Rated current up to 30A
  • Various connection methods such as power cords and plug-ins are available
  • Compact design and easy installation
  • Powerful filtering performance
  • Optional low leakage current version
  • Customized versions of appearance and parameters can be provided on demand
  • Comply with cUL, CE, ROHS, CQC related safety certifications

Technical Specifications

 
Specification
Details
Model：
DBA4
Application：
Industrial / Commercial
Phase：
Single-phase
Structure：
Single-stage
Max operating voltage：
275VAC
Rated Current：
10A - 30A
Leakage Current：
≤ 0.5mA
Withstand voltage level：
2150VAC
Frequency Range：
50/60Hz
Operating Temperature：
-25°C ~ +85°C
Certifications：
UL, CQC, CE
Dimensions (mm)：
83 × 51 × 30 (W×H×D)
Weight(g)：
180
Connection Type：
Bolt/Insert/Power cord
 
download date sheetrequest a quote 

Technical Advantages

  • The compact design saves space while maintaining high current ratings, making it ideal for applications with limited installation space.
  • Three connection options are available for flexible installation in different systems.
  • High withstand voltage ensures reliability even under high-stress environments.
  • Low leakage current and high insulation resistance enhance safety, making it particularly suitable for sensitive equipment.
  • The ferrite + capacitor design optimizes high-frequency (1 MHz–30 MHz) filtering performance.
  • It is a cost-effective EMI filtering solution for high-current single-phase systems.
 

Product Pictures

Detail Picture

DBA4 Detail PictureDBA4 Insert Detail Picture

Overall Dimension（±1mm)

DBA4 Bolt Overall Dimension（±1mm)DBA4 Insert Overall Dimension 

Circuit Diagram

DBA4 Circuit Diagram

Insertion Loss

The DBA4 filter is optimized for EMI suppression in the frequency band of 1 MHz to 30 MHz, effectively reducing both common-mode and differential-mode noise. Exact insertion loss curves vary with current rating; please see the datasheet for detailed performance.
DBA4 Insertion Loss Common-Mode and 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

  • Electrical and electronic equipment
  • Consumer appliances
  • Household equipment
  • Medical equipment
  • Office automation equipment
  • Data communication equipment

Installation Instructions

  • Connect the DBA4 filter in series with the power line for optimal suppression.
  • Choose the appropriate connection method (screw/quick-connect/wire type) based on design requirements.
  • Keep wiring as short as possible to reduce parasitic inductance.
  • Ensure reliable grounding to improve safety and EMI performance.
  • Avoid routing sensitive signal lines in parallel with the power filter.

Product Selection Guide

When selecting a DBA4 EMI filter, consider the following:
  • Rated Current: Choose a 10 A / 20 A / 30 A model based on the equipment load.
  • Voltage: Confirm whether the system is 115 VAC or 250 VAC.
  • Connection Method: Choose bolt, quick-connect, or custom wiring based on installation requirements.
  • Leakage Current Requirement: < 0.5 mA is a critical specification if safety-sensitive equipment is critical.
  • Installation Space: A compact design is ideal when space is limited.
  • Customization Requirements: Contact DOREXS for customization if special current, terminals, or wire lengths are required.
 

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.