GE DS200RTBAG3A
Product Name: GE Mark V DS200 Series High-Density Relay Output Termination Board
Introduction: The DS200RTBAG3A is a high-density relay output termination board for GE’s Mark V DS200 series, used in Speedtronic turbine control systems. It provides 48 independent Form C relay outputs arranged as three isolated banks of 16 relays each. The “A” revision upgrades the terminal blocks from cage clamp to screw type. Essentially, it integrates three RTBAG1A boards onto a single PCB with screw terminals instead of cage clamps.
Detailed content
Technical Specifications & Performance Parameters:
- Relay Outputs: 48 channels (3 banks of 16)
- Bank A: Relays 1–16
- Bank B: Relays 17–32
- Bank C: Relays 33–48
- Relay Type: Electromechanical, Form C (SPDT)
- Contact Arrangement: Common (C), Normally Open (NO), Normally Closed (NC) per relay
- Contact Rating (Resistive): 5 A @ 250 VAC, 5 A @ 30 VDC
- Contact Rating (Inductive): 2 A @ 250 VAC (cosφ = 0.4), 2 A @ 30 VDC (L/R = 40 ms)
- Maximum Switching Voltage: 250 VAC, 125 VDC
- Maximum Switching Current: 5 A
- Coil Voltage: 24 VDC nominal (from backplane)
- Coil Current: 15 mA typical per relay at 24 VDC
- Total Backplane Current (all relays): 720 mA
- Coil Suppression: Flyback diode (1N4007) across each coil
- Per-Channel Indication: Red LED per relay (illuminates when coil energized)
- Terminal Type: Removable screw terminal blocks, rising cage, 12–24 AWG (3 terminals per relay: C, NO, NC)
- Terminal Torque: 0.5–0.6 Nm (4.4–5.3 lb-in)
- Bank-to-Bank Isolation: 1500 VAC for 1 minute
- Coil-to-Contacts Isolation (per bank): 1500 VAC for 1 minute
- Connection to Output Modules: Three 64-pin ribbon cables (one per bank, included) or backplane with bank select
- Operating Temperature: -30 °C to +65 °C
- Storage Temperature: -40 °C to +85 °C
- Dimensions: 420 mm × 220 mm × 50 mm
- Weight: 2.3 kg (5.1 lbs)
Structural & Material Features: Three independent banks of 16 relays, each with removable screw terminal blocks (pre-installed, color-coded per bank), spare terminal blocks, labeling strips (1–48), bank isolation jumpers installed, torque card, and DIN rail end clips (4).
Application Scenarios: Very dense relay output applications (48 channels) in high-vibration environments; suitable for maintenance teams standardizing on screwdrivers or replacing existing screw-terminal boards.
Installation & Usage Notes: Install in Mark V DS200 series racks. Use three 64-pin ribbon cables to connect to output modules, or use backplane with bank select. Apply proper terminal torque (0.5–0.6 Nm). Do not exceed 5 A resistive / 2 A inductive contact ratings. Keep operating temperature within -30 °C to +65 °C. Preferred in high-vibration environments due to screw terminals.












