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GE DS200SSRAG1A

The GE DS200SSRAG1A is a solid-state relay board serving the GE Mark V Turbine Control System. It switches high-power AC loads without moving mechanical contacts, providing silent, fast switching with no contact wear.
  • Product Type: Solid State Relay Board (Mark V Switching Control)
  • Brand: General Electric
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Detailed content

  • Alternate Part Number: DS200SSRAG1AAA (functional equivalent / later revision)
  • Number of Relays: 8 independent solid-state relays
  • Load Voltage: 24 to 280 VAC
  • Load Current: 2 A per relay (continuous)
  • Inrush Current: 20 A for one cycle
  • Control Voltage: 3 to 32 VDC
  • Control Current: 10 mA per relay
  • Response Time: 1 ms turn-on / 2 ms turn-off
  • Isolation Voltage: 4000 VAC (control to load)
  • Zero-Crossing Detection: Yes — for clean switching
  • Snubber Protection: Internal snubber circuit per relay for inductive load protection
  • Surge Suppression: MOV surge suppressors across each output
  • Energy Storage: 16 capacitors providing 2.2 µF total for transient suppression
  • Physical Dimensions: 235 mm (L) × 152 mm (W) × 1.6 mm (PCB thickness)
  • Component Count: 188 discrete parts (48 resistors, 32 capacitors, 8 SSR modules)
  • PCB: 4-layer FR4, green solder mask both sides
  • Mounting: 4 × M4 clearance holes for chassis mounting
  • Weight: 0.38 kg (0.84 lb)
  • Indicators: 8 red LEDs showing each relay’s active status
  • Connections:
    • 20-pin ribbon cable header for control signals from main controller
    • Two 10-pin terminal blocks for AC load connections (all 8 relays)
    • 4-pin power input connector
    • 4 test points for control voltage measurements
  • Internal Circuitry: Each SSR module contains a triac, optocoupler, and zero-crossing circuit. A clear plastic cover protects the relay modules from dust.
  • Working Principle: A 3–32 VDC control signal activates the optocoupler inside each SSR module, triggering the triac to switch the AC load. Zero-crossing detection ensures the triac turns on only when the AC waveform crosses zero, minimizing EMI and contact stress.
  • Variant Equivalence: DS200SSRAG1AAA is functionally identical — same dimensions, connectors, and mounting hole locations; direct substitution without hardware modification.
  • Applications: Heater control, valve actuation, alarm annunciation, motor and solenoid switching within Mark V turbine control systems.
  • Installation Requirements: Chassis mount using 4 × M4 screws; separate low-voltage control wiring from AC load wiring; use external fuses to protect each relay output from short circuits.
  • Usage Notes: Observe 2 A continuous per-relay maximum; inrush currents up to 20 A are tolerated for a single cycle; ensure adequate ventilation as SSRs dissipate heat through the PCB.

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