4D33645G05 Gen5 Flagship Ultra-Reinforced 16-Channel Low-Current Isolated Discrete Output Terminal Daughter Card for Common Q Class 1E Nuclear Safety DCS
June 10, 2026

4D33645G05 Gen5 Flagship Ultra-Reinforced 16-Channel Low-Current Isolated Discrete Output Terminal Daughter Card for Common Q Class 1E Nuclear Safety DCS

NRC Class 1E nuclear safety certified, the 4D33645G05 is the fifth-generation flagship fully optimized low-current discrete output terminal daughter card upgraded from Gen1 to Gen4 for Emerson Westinghouse Common Q safety I&C platform. It adopts 2500V ultra-high per-channel isolation and 60dB 6th-order EMI filter arrays to thoroughly suppress inductive back EMF, ultra-high-energy lightning surges and wide-amplitude ground loop drift when driving low-power field loads including status indicator lamps and miniature signal relays. Equipped with quadruple-thick gold-plated backplane connectors, titanium-alloy anti-corrosion nickel terminals and zero-halogen thick copper PCB, this board integrates full-channel high-speed intelligent fault diagnosis, predictive pre-alarm, multi-layer all-around circuit protection and hot-swap maintenance without interrupting auxiliary control loops, delivering ultra-long-term stable performance under extreme composite harsh environments of wide temperature range, high humidity, heavy dust and intense vibration.

Description

Parameter Specifications

  1. Part Number: 4D33645G05

  2. Brand: Emerson Westinghouse

  3. Compatible System: Common Q Class 1E Safety Instrument & Control DCS System

  4. Matching Components: Discrete output logic master boards, 49E-3649 rack backplane, 475HP1ENA9GMT redundant rack power supply

  5. PCB Material: Multi-layer ultra-thick copper zero-halogen V-0 flame-retardant high-Tg FR-4

  6. Outline Size & Weight: 118mm × 64.5mm × 19.7mm; Net Weight: 56g

  7. Ambient Operating Conditions: Operating Temp -30℃ ~ +75℃, Storage Temp -50℃ ~ +130℃, Humidity 5%~98% RH non-condensing

  8. Power Supply: DC 12V / DC 24V dual wide-range adaptive input

  9. Output Channels: 16 fully independent galvanic isolated channels

  10. Per-channel Continuous Rated Output Current: 0.7A

  11. Isolation Index: Single channel isolation withstand voltage 2500V AC; Dielectric withstand 2500V AC for 60s; Insulation resistance ≥1500MΩ @500VDC

  12. EMC Anti-interference: Power frequency interference attenuation ≥60dB, complies with IEC 61000-6-2 industrial EMC standard

  13. Built-in Circuit: Oversized bidirectional large-capacity freewheeling absorption circuit for miniature inductive auxiliary loads

  14. Protection & Intelligent Diagnosis: Per-channel independent explosion-proof fast fuse overcurrent protection, bidirectional ultra-high-energy surge absorption, reverse wiring lockout, sub-microsecond short-circuit instant full cut-off, full back EMF clamping, real-time overcurrent/open-circuit/over-temperature fault detection, microsecond high-precision timestamp fault upload, fault waveform full capture, permanent non-volatile historical fault storage and fault trend predictive early warning output

  15. Mechanical Reliability: Continuous vibration resistance 15g (10–150Hz); Shock resistance 35g pulse, 11ms duration

  16. Core Feature: Single module hot swappable under energized rack

  17. Certifications: CE, UL508, IEC60204-1, NRC Class 1E nuclear safety qualification

  18. Aging Test Standard: 120-hour full-load high-low temperature cyclic aging test plus thermal cycle fatigue test

  19. Design Service Life: ≥180,000 hours of 24/7 uninterrupted continuous operation

  20. Warranty Period: 18-month global unified warranty for original and refurbished modules

Application Fields

  1. Nuclear power plant Common Q Class 1E safety I&C racks: Flagship isolation drive terminal for auxiliary cabinet equipment status indicator lights and miniature safety interlock relays

  2. AP1000 nuclear Post-Accident Monitoring System (PAMS): Top-tier reinforced isolation drive board for auxiliary equipment alarm annunciators and small control relays

  3. Thermal power & hydropower station main control systems: High-reliability output module for boiler auxiliary flame indicator lights and turbine auxiliary safety interlock relays

  4. Explosion-proof high-risk petrochemical DCS distributed control system: Premium wiring card for reaction tank status indicators and safety alarm miniature relays

  5. Offshore oil & gas explosion-proof automation racks: Ultra-stable drive interface for wellhead equipment status lamps and auxiliary process interlock relays

  6. Large diesel generator safety sequential control cabinets: Discrete output subcard for unit fault indicator lights and control auxiliary relays

  7. Municipal large-scale water treatment safety interlock DCS systems: High-performance drive terminal for liquid level status lamps and chemical dosing system auxiliary control relays

  8. Metallurgy & cement kiln production lines: Heavy-duty drive module for furnace running status indicators and high-temperature auxiliary interlock small relays


Get a Quote