Mitsubishi MW414 / MW414B – Power Supply Circuit Board | MELSEC-A Series PLC Platform
Engineering Background
The MW414 and MW414B are power supply circuit boards designed for Mitsubishi Electric’s MELSEC-A Series programmable logic controller (PLC) platform — one of the most widely deployed industrial automation architectures in Asia-Pacific manufacturing. These boards serve as the internal power regulation backbone of A-Series base units, converting incoming AC/DC supply into stable regulated voltages required by CPU, I/O, and communication modules.
Product Positioning
Sourced for procurement engineers requiring verified replacement or spare-stock components for legacy MELSEC-A installations. The MW414B is the revised variant of the MW414, sharing the same form factor and electrical interface with incremental design improvements. Both variants are fully interchangeable in supported base units. Konmask.com supplies these boards through established industrial distribution channels with traceability documentation available on request.
Complete Technical Specifications
| Parameter | Specification |
|---|---|
| Part Numbers | MW414 / MW414B |
| Manufacturer | Mitsubishi Electric Corporation |
| Series / Platform | MELSEC-A Series PLC |
| Component Type | Power Supply Circuit Board |
| Form Factor | Internal PCB assembly for A-Series base unit |
| Country of Origin | Japan |
| Weight (shipping) | 4,460 g |
| Compatibility | MELSEC-A Series base units (A-series CPU racks) |
| Variant Relationship | MW414B is revised version of MW414; electrically interchangeable |
| RoHS / Compliance | Per Mitsubishi Electric product documentation |
Proven Application Environments
- Automotive manufacturing lines — MELSEC-A PLCs controlling stamping, welding, and assembly sequences
- Steel & metals processing — Rolling mill and furnace control systems with long-cycle uptime requirements
- Chemical & petrochemical plants — Process control racks requiring stable regulated power in high-EMI environments
- Food & beverage production — Packaging and conveyor automation with legacy A-Series infrastructure
- Semiconductor fab support systems — Facility automation and utility control using MELSEC-A platforms
- Power generation & utilities — Substation and turbine auxiliary control panels
Engineering Advantages
- Drop-in replacement — Identical PCB footprint and connector pinout to original factory-installed board; no base unit modification required
- Dual-variant coverage — MW414 and MW414B share the same electrical interface, simplifying spare-parts inventory management
- Genuine Mitsubishi Electric origin — Manufactured in Japan to OEM specifications; not a third-party clone or remanufactured assembly
- Stable regulated output — Designed to maintain voltage stability under full I/O load conditions typical of A-Series rack configurations
- Long service life — Industrial-grade component selection consistent with Mitsubishi Electric’s MELSEC reliability standards
System Architecture & Signal Flow
Within the MELSEC-A Series rack, the power supply board occupies the dedicated PSU slot of the base unit. AC mains input (or DC bus, depending on base unit model) is rectified and regulated by the MW414/MW414B to supply the internal backplane with the voltages required by the CPU module, I/O modules, and any installed special function modules. The board interfaces directly with the base unit backplane connector — no external wiring to the board itself is required beyond the primary power input terminals on the base unit front panel.
Signal flow: AC/DC Input → MW414/MW414B Regulation Stage → Backplane Bus → CPU + I/O Modules
Sourcing & Quality Verification
- All units sourced through verified industrial distribution channels with documented supply chain traceability
- Pre-shipment visual and functional inspection performed on each unit
- Original manufacturer labeling and part markings intact and unaltered
- Traceability documentation (lot records, inspection reports) available upon request for MRO and OEM procurement teams
- Packaging: anti-static ESD bag + foam-lined carton; suitable for international air and sea freight
Procurement Process
- Confirm compatibility — Verify your base unit model accepts MW414 or MW414B (consult your MELSEC-A hardware manual or contact our technical team)
- Request quotation — Contact support@konmask.com for volume pricing, lead time, and availability confirmation
- Place order — Purchase order accepted via this storefront or direct invoice; NET payment terms available for qualified accounts
- Shipment & documentation — Commercial invoice, packing list, and optional COO certificate provided with every shipment
- Technical support — Post-delivery installation guidance available from our engineering team
Technical FAQ
Q: Is the MW414B a direct replacement for the MW414?
A: Yes. The MW414B is the revised production variant of the MW414 with the same electrical interface and PCB footprint. Both are interchangeable in supported MELSEC-A base units.
Q: Which MELSEC-A base units are compatible?
A: The MW414/MW414B is designed for A-Series base units that use this power supply board form factor. Please provide your base unit model number to our technical team for confirmation before ordering.
Q: Do you supply new or refurbished units?
A: We supply both new-old-stock (NOS) and professionally inspected refurbished units depending on availability. Condition is clearly stated at time of quotation.
Q: Can you provide a certificate of conformance?
A: Yes. COC and inspection documentation are available upon request for MRO, OEM, and regulated-industry procurement requirements.
Q: What is the lead time?
A: Lead time varies by stock availability. Contact us at support@konmask.com or call +0086 19859288691 for current availability.
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Contact: support@konmask.com | +0086 19859288691
