DBA7 EMI FILTER
Model No: DBA7

DBA7 EMI Filter｜Single Phase 40A-100A , Bolt, High-Power Noise Suppression

Rated Current：40A-100A

Single Phase EMI Filter

Certificate：cUL,CQC,CE,Rohs

Can be customize according to customer requirements.

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TheDBA7 series single-phase power supply filter adopts a single-pole filter design and provides a variety of installation methods, including plug-in and bolt-on, suitable for applications with a rated current range of 40-100A. This series of filters is widely used in high-power electronic equipment, industrial control systems, and other fields that require high-performance power management.
DBA7 filters can effectively suppress electromagnetic interference with their excellent filtering effect and high-frequency interference suppression capabilities, ensuring the stability and reliability of equipment and systems in complex environments. Whether in industrial automation equipment or precision electronic equipment applications, DBA7 filters can provide efficient and safe power supply filtering solutions to improve the overall system performance.

Key Features

  • Wide current range: 40A–100A — Suitable for high-power devices.
  • Effectively suppresses common-mode and differential-mode interference.
  • Maintains stable electromagnetic interference suppression performance over a wide frequency range.
  • Compact and robust design, offering bolt/plug/power cord connections.
  • Customization available to meet various application needs.
  • Safety certified: cUL, CQC, CE, RoHS.
  • Free samples provided — for convenient evaluation before bulk purchases.

Technical Specifications

 
Specification
Details
Model：
DBA7
Application：
Industrial / Commercial
Phase：
Single-phase
Structure：
Single-stage
Max operating voltage：
275VAC
Rated Current：
40A - 100A
Leakage Current：
≤ 0.5mA
Withstand voltage level：
2150VAC
Frequency Range：
50/60Hz
Operating Temperature：
-25°C ~ +85°C
Certifications：
UL, CQC, CE
Dimensions (mm)：
96× 80 × 45 (W×H×D)
Weight(g)：
360
Connection Type：
Bolt/Insert/Power cord
 
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Technical Advantages

  • Built with high-quality MnZn ferrite core and capacitors, ensuring robust suppression even under heavy load. 
  • Design ensures stable suppression over wide current range (40–100 A), suitable for demanding industrial environments. 
  • Compact form factor despite large current rating — simplifies integration into control cabinets or industrial power assemblies. 
  • Customizable: cabling, terminals, mechanical dimensions can be tailored to customers’ equipment needs. 
     

Product Pictures

Detail Picture

DBA7 Detail Picture

Overall Dimension（±1mm)

DBA7 Overall Dimension（±1mm)

Circuit Diagram

DBA7 Circuit Diagram

Insertion Loss 

DBA7 Single-Phase EMI Filter Insertion Loss Diagram

Customization Options 

DOREXS supports customization of the DBA7 based on equipment requirements. Cable length and interface type can be customized to customer needs. DOREXS can also customize filter-specific rated voltage/frequency/grounding/wiring schemes, mechanical dimensions and enclosure structure, and OEM/ODM markings/labels according to customer equipment requirements. At DOREXS, everything is centered on customer needs; we are committed to creating customized EMI solutions for our customers.

Approvals and Compliances 

Approvals and Compliances 

Applications

  • Automation equipment
  • Drivers
  • Fire protection systems
  • Electronic and electrical equipment

Integration & Installation Instructions

  • Install DBA7 in series with the main power line to ensure full filtering effect.
  • Use bolt or insert connection as per installation environment; ensure secure mounting for high-current load.
  • For power-cord version, verify plug/terminal connection is robust and meets wiring standards.
  • Place filter in suitable enclosure with ventilation if equipment generates heat.
  • For custom installations — consult DOREXS for dimension / terminal / wiring customization to match your assembly.

Selection Guide

When choosing the DBA7 for your system, consider:
  1. Rated current: Select a 40 A–100 A model, based on the device's maximum load current.
  2. Connection type: Choose a Bolt/Insert/Power-cord connection method based on the installation environment.
  3. Customized needs: Customize the cable length, terminal type, and mechanical dimensions according to the device's requirements.
  4. Application environment: Suitable for heavy-load scenarios such as industrial automation, high-power drives, and power supply systems.
  5. Regulatory compliance: The DBA7 has passed major certifications (cUL/CE/RoHS), making it suitable for export and projects with high compliance requirements.
 
If you are interested in the DBA7 EMI Filter, please contact us for the following services: free sample evaluation, technical support and selection guidance, customized specifications (current, voltage, connection method, size, etc.), and factory direct supply and quotation.

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.