FUJI EP-3959E-C / EP-3959E-C2 Circuit Board – Fuji Electric Drive Control Module
When a critical drive control board fails on the production floor, the entire line stops. Conveyor systems freeze, spindle drives lose synchronization, and every minute of unplanned downtime translates directly into lost output and escalating maintenance costs. In high-throughput manufacturing environments, sourcing an exact replacement PCB is not optional — it is the difference between a two-hour recovery and a two-week shutdown waiting for OEM lead times.
The FUJI EP-3959E-C and its revision EP-3959E-C2 are genuine Fuji Electric drive control circuit boards engineered for use in Fuji’s industrial inverter and servo drive platforms. These boards occupy a critical position in the Fuji Electric automation ecosystem, providing the core signal processing and gate-drive logic that governs motor control accuracy, fault detection, and drive protection. As Fuji Electric continues to be one of the world’s leading suppliers of power electronics and motion control solutions, the EP-3959E-C series remains a sought-after spare part for maintenance engineers managing legacy and current-generation Fuji drive installations globally.
Technical Specifications
- Part Numbers: EP-3959E-C / EP-3959E-C2
- Manufacturer: Fuji Electric Co., Ltd.
- Component Type: Drive Control Circuit Board (PCB)
- Series Compatibility: Fuji Electric Industrial Inverter / Servo Drive Series
- Board Weight: Approx. 4,460 g (as packaged)
- Revision: EP-3959E-C (original) / EP-3959E-C2 (revision 2 — functionally interchangeable)
- Condition: New / Surplus / Refurbished (specify on inquiry)
Note: Konmask.com does not fabricate or alter specifications. All technical data is sourced from OEM documentation. For detailed electrical parameters, please contact our technical team with your drive model number.
Key Features & Benefits
- OEM-Grade Reliability: Manufactured by Fuji Electric to original design tolerances, ensuring drop-in compatibility with existing drive assemblies.
- Dual Part Number Coverage: EP-3959E-C and EP-3959E-C2 are stocked together, eliminating sourcing confusion between revision variants.
- Reduced Downtime Risk: Having a verified spare on hand cuts mean-time-to-repair (MTTR) dramatically compared to waiting on OEM factory orders.
- Rigorous Pre-Shipment Inspection: Each board undergoes visual inspection and functional verification before dispatch.
- Global Export Ready: Properly packaged for international air and sea freight with anti-static ESD protection.
Industry & Equipment Applications
- Manufacturing & Assembly Lines: Conveyor drives, robotic arm controllers, and CNC spindle inverters using Fuji Electric drive platforms.
- HVAC & Building Automation: Variable frequency drives (VFDs) controlling pumps, fans, and compressors in commercial and industrial HVAC systems.
- Water & Wastewater Treatment: Pump station inverter drives requiring reliable control board replacements.
- Packaging Machinery: High-speed packaging lines where Fuji drives manage tension control and indexing.
- Crane & Hoist Systems: Heavy-duty lifting equipment utilizing Fuji Electric inverter technology for precise speed regulation.
- Semiconductor & Electronics Manufacturing: Cleanroom-compatible automation systems with Fuji drive integration.
System Integration & Compatible Parts
The EP-3959E-C / EP-3959E-C2 circuit board is designed for integration within Fuji Electric’s inverter and drive control architecture. When planning a repair or preventive maintenance strategy, consider sourcing compatible components such as:
- Fuji Electric gate driver boards and power boards for the same drive series
- Fuji Electric control terminals and interface cards
- Fuji Electric IGBT modules compatible with your drive’s power stage
- Fuji Electric keypad / operator panels for the corresponding drive model
Contact our technical team with your full drive model number and nameplate data to confirm exact compatibility before ordering.
Our Quality Assurance Process
- Step 1 – Source Verification: All Fuji Electric parts are sourced from authorized channels, certified distributors, or verified surplus inventories with full traceability documentation.
- Step 2 – Visual Inspection: Each PCB is inspected for physical damage, burnt components, corrosion, and solder joint integrity.
- Step 3 – Functional Testing: Where applicable, boards are bench-tested against known-good reference units.
- Step 4 – ESD-Safe Packaging: Boards are packed in anti-static bags, foam-lined boxes, and clearly labeled for safe international transit.
- Step 5 – Documentation: Shipment includes packing list, inspection record, and part identification label.
How to Order
- Submit an inquiry via the Contact Us form on Konmask.com or email [email protected].
- Provide your drive model number, required quantity, and destination country.
- Receive a formal quotation with pricing, lead time, and shipping options within 24 business hours.
- Confirm order and complete payment via T/T bank transfer, PayPal, or other agreed method.
- Receive tracking information and shipping documents upon dispatch.
Why Choose Konmask.com?
- Industrial Automation Specialists: We focus exclusively on PLC modules, DCS components, and drive spare parts — not a general electronics marketplace.
- B2B Export Experience: Serving maintenance engineers, MRO procurement teams, and system integrators across Asia, Europe, the Middle East, and the Americas.
- Fast Inquiry Response: Dedicated technical sales team responds to all RFQs within one business day.
- Competitive Pricing: Direct sourcing relationships allow us to offer market-competitive pricing on hard-to-find Fuji Electric parts.
- Reliable Logistics: Partnerships with DHL, FedEx, and UPS for express international delivery with full tracking.
Frequently Asked Questions
Q: What is the difference between EP-3959E-C and EP-3959E-C2?
A: EP-3959E-C2 is a revision of the original EP-3959E-C board. In most Fuji Electric drive applications, these two part numbers are functionally interchangeable. Please confirm with our technical team if you have a specific drive model requirement.
Q: Is this a new, used, or refurbished board?
A: We stock new, surplus-new, and professionally refurbished units depending on availability. The condition will be clearly stated in your quotation. All units pass our quality inspection process before shipment.
Q: Can you provide a warranty?
A: Yes. We offer a standard 90-day warranty against manufacturing defects and functional failure under normal operating conditions. Extended warranty options are available — please inquire.
Q: Do you ship internationally?
A: Yes. We ship worldwide via DHL, FedEx, UPS, and EMS. Export documentation including commercial invoice and packing list is provided for all international orders.
Q: How long does delivery take?
A: Express international shipping typically takes 3–7 business days depending on destination. Economy options are available for non-urgent orders.
Q: Can I get a datasheet or technical drawing?
A: We provide available OEM documentation upon request. Contact our team with your inquiry and drive model details.
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