Product Core Brief
- Part Number: DS200RTBAG3AHC
- Brand: GE (GE Energy / GE Digital / GE Industrial Systems)
- Series: GE Speedtronic Mark V / DS200
- Core Function: RTBA relay terminal board providing relay I/O termination and field interface in GE Mark V drive and exciter cabinets.
- Product Type: Mark V Relay Terminal Board (RTBA)
- Key Specs: 10 relays (7× DPDT + 3× 4PDT) | 52 I/O terminals | CPH/CPN power connectors | MOV protection | legacy/obsolete product
- Condition: New Original / New Surplus
Product Introduction
GE DS200RTBAG3AHC is a relay terminal board for the GE Speedtronic Mark V control system family. It is used as an optional relay I/O board inside GE drive and exciter cabinets, providing relay termination, field interface, and control signal distribution.
The RTBA board is documented with 10 relays: seven DPDT relays in positions K20–K26 and three 4PDT relays in positions K27–K29. Each DPDT relay provides two C-type contacts rated at 10 A; each 4PDT relay provides four C-type contacts rated at 1 A. The relay I/O is protected by 130 VAC MOVs, and the board includes 52 I/O terminals for relay contacts and field wiring.
Power for the relay circuits is supplied through two pluggable connectors: CPH for positive control power and CPN for negative control power. The relays can be driven directly by pilot relays on a LAN I/O terminal board or remotely by the user, depending on cabinet configuration.
Some third-party listings describe DS200RTBAG3AHC as an analog I/O board, but the most specific public documentation identifies it as an RTBA relay terminal board with the relay/terminal configuration described above. The exact relay coil voltage, terminal map, connector pinout, and cabinet assignment should be verified from the physical board label and GE Mark V documentation before installation.
Key Technical Specifications
| Parameter | Value |
|---|---|
| Manufacturer | GE (GE Energy / GE Digital / GE Industrial Systems) |
| Part Number | |
| Product Type | Relay Terminal Board (RTBA) |
| Series | GE Speedtronic Mark V / DS200 |
| Typical Application | Relay I/O termination, field interface in drive/exciter cabinets |
| Relay Count | 10 relays (7× DPDT + 3× 4PDT) |
| Contact Rating | DPDT: 10 A per contact; 4PDT: 1 A per contact |
| I/O Terminals | 52 terminals |
| Power Connectors | CPH (positive), CPN (negative) |
| Protection | 130 VAC MOV on relay I/O |
| Status | Legacy / Obsolete |
Note: Relay count, relay type, 52 I/O terminals, CPH/CPN connectors, and MOV protection are documented for the DS200RTBAG3A / DS200RTBAG3AHC RTBA family. Relay coil voltage, terminal pinout, and cabinet-specific wiring should be confirmed from the physical board label and GE Mark V manuals.
Quality Control Process (DYNAMIC GENERATION)
- Visual and label inspection. We check the part number, suffix, PCB surface, relay sockets, terminal points, and CPH/CPN connectors for damage or corrosion.
- Relay and socket inspection. All 10 relay positions (K20–K29) are checked for correct relay type, seating, and visible damage.
- Terminal and connector check. The 52 I/O terminals and CPH/CPN power connectors are verified for correct pin continuity and no short circuits.
- MOV and protection check. MOV protection components are inspected for visible damage or thermal stress.
- Final packaging. After passing inspection, the board is anti-static bagged and foam-packed for shipment.
Replacement Pitfall Guide (DYNAMIC GENERATION)
❗ Confirm RTBA function before installation. Some listings describe DS200RTBAG3AHC as an analog I/O board, but the most specific documentation identifies it as an RTBA relay terminal board; verify from the physical label.
❗ Label all 52 I/O terminals before removal. Incorrect reconnection of relay contacts or field wiring can cause trip or drive faults.
❗ Copy relay positions from the original board. K20–K26 are DPDT; K27–K29 are 4PDT. Do not swap relay types.
❗ Verify CPH/CPN power wiring. Reverse or incorrect control power wiring can damage relay drivers.
❗ Confirm relay coil voltage. Coil voltage depends on cabinet configuration; do not assume a universal value without checking the site BOM or GE documentation.
❗ Observe live-voltage safety. Relay terminal boards may be associated with energized control circuits; disconnect power before handling.
❗ Handle as ESD-sensitive equipment. Always use anti-static wrist straps and handling procedures during removal, installation, and storage.
Keep these in mind and you’ll cut 90% of rework time.
Compatibility Matrix & Benchmarks
| Original Model | Replacement / Successor Model | Compatibility Level | Migration Notes |
|---|---|---|---|
| GE | GE | Direct | Same part number; verify relay positions, terminal map, and CPH/CPN wiring. |
| GE | GE DS200RTBAG3A | Needs Adaptation | Same RTBA family; suffix differences may affect revision or configuration. |
| GE | GE DS200RTBA variants | Needs Adaptation | Same RTBA family; relay count and terminal layout may differ. |
| GE | GE DS200RT8 variants | Needs Adaptation | Related relay terminal board family; not a direct replacement. |
| GE | Mark VIe / IS200/IS220 modules | Not Compatible | Different platform and architecture; not a direct replacement. |
Benchmark highlights
- GE Speedtronic Mark V RTBA relay terminal board.
- Provides 10 relays: 7× DPDT (K20–K26) and 3× 4PDT (K27–K29).
- 52 I/O terminals for relay contacts and field wiring.
- CPH/CPN pluggable connectors for positive and negative control power.
- Relay I/O protected by 130 VAC MOVs.
- Relays can be driven by pilot relays or remotely by the user.
- Legacy product; best suited for existing Mark V drive/exciter system maintenance and like-for-like replacement.
