June 08, 2026

Emerson 406A095H03 WDPF Adapter Plug with 3A99528G23 Cable Product Description

Emerson 406A095H03 is a factory-assembled WDPF adapter plug and cable assembly designed for legacy Westinghouse WDPF Distributed Control System (DCS) installations. Integrating a custom adapter plug with the 3A99528G23 cable, this unit provides a reliable, ready-to-use connection solution for WDPF network and I/O interfacing. Engineered for high noise immunity and mechanical durability, it ensures stable signal transmission between WDPF controllers, I/O modules, and peripheral devices in industrial environments. The assembly is pre-tested to meet Emerson’s strict quality standards, minimizing on-site wiring errors and reducing installation time.

Description

Emerson 406A095H03 WDPF Adapter Plug with 3A99528G23 Cable Product Description

1. Product Overview

2. Basic Product Information

Model Number: 406A095H03
Manufacturer: Emerson Automation Solutions (formerly Westinghouse Process Control)
Product Type: WDPF Adapter Plug & Cable Assembly
Cable Part Number: 3A99528G23
Applicable Systems: Westinghouse WDPF DCS
Country of Origin: United States
Weight: Approximately 1.42 kg
Warranty: 12 months for new and factory-tested units
Certifications: Emerson factory tested, EMC compliant, CE marked

3. Core Functions

The 406A095H03 serves as a critical interconnection interface for WDPF systems, enabling seamless communication between incompatible WDPF ports or devices. The integrated adapter plug converts signal formats and pin configurations to match WDPF standards, while the 3A99528G23 cable transmits real-time process data, control signals, and diagnostic information. Its shielded construction minimizes electromagnetic interference (EMI) and radio-frequency interference (RFI), ensuring data integrity in high-noise industrial settings. The pre-assembled design eliminates the need for manual crimping or wiring, reducing installation complexity and the risk of connection faults.

4. Technical Specifications

4.1 Electrical & Transmission

Cable Construction: Shielded twisted pair (STP), 22 AWG
Characteristic Impedance: 120 Ω
Data Rate: Up to 19.2 kbps (WDPF Westnet protocol)
Shielding: Foil + braided copper shield (100% coverage)
Voltage Rating: 300 VAC
Insulation Resistance: ≥100 MΩ at 25 °C
Adapter Plug: WDPF-compatible, custom pinout configuration

4.2 Environmental

Operating Temperature: -20 °C to +75 °C
Storage Temperature: -30 °C to +80 °C
Relative Humidity: 5%–95% (non-condensing)
Flame Retardancy: UL 1061 compliant
EMI/RFI Protection: EMC compliant for industrial environments

4.3 Mechanical

Outer Jacket: PVC (abrasion and oil resistant)
Connectors: Factory-crimped WDPF adapter plug and mating connector
Minimum Bend Radius: 8× cable diameter
Pull Tension: ≤50 lbs during installation

5. Compatibility

The 406A095H03 is fully compatible with all Westinghouse WDPF DCS components, including controllers, I/O modules, power supplies, and operator workstations. It is a direct replacement for older WDPF adapter cable assemblies and supports backward compatibility with existing WDPF installations. The factory-terminated adapter plug ensures plug-and-play connectivity with WDPF backplanes and ports, eliminating field wiring errors.

6. Industrial Applications

This assembly is deployed in mission-critical WDPF-controlled industrial processes:

Power Generation: Thermal, combined-cycle, and nuclear power plants
Petrochemical: Refineries, gas processing, and chemical manufacturing
Heavy Industry: Pulp & paper, mining, cement, and metallurgical facilities
Process Manufacturing: Any WDPF-based plant requiring reliable device interconnection

7. Installation & Safety

Pre-Installation Inspection: Check adapter plug, cable, and jacket for damage before installation.
Routing: Avoid sharp bends, high-EMI sources (motors, transformers), and direct sunlight.
Connection: Align adapter plug pins with the target port, insert fully, and secure with locking clips.
Grounding: Connect cable shield to cabinet ground at both ends (resistance <1 Ω).
ESD Protection: Use anti-static wristband when handling connectors to prevent static damage.
Power-Off Requirement: Disconnect system power before connecting/disconnecting the assembly.

8. Maintenance & Troubleshooting

Routine Maintenance: Quarterly inspection of adapter plug and connectors for wear/corrosion; annual continuity and shield integrity testing.
Common Issues:
- Communication Loss: Check adapter plug seating, shield grounding, and physical cable damage.
- Data Errors: Verify routing away from EMI sources; test for shield breaks or adapter pin damage.
- Intermittent Faults: Inspect adapter plug pins for bending, corrosion, or loose connections.

9. Ordering Information

Part Number: 406A095H03
Category: DCS Spare Parts → WDPF System → Adapter & Cable Assemblies
Availability: New original and factory-tested units (limited stock)
Lead Time: 2–4 weeks (standard); rush shipping available
Order Notes: Specify WDPF system serial number and device connection requirements for compatibility.

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