DS200RTBAG2AHC in Factory Packaging: Where This Board Fits

This listing covers a new surplus DS200RTBAG2AHC in its factory packaging — the Group 2 RTBA relay card at revision AHC, from the DS200 board family of GE's Speedtronic Mark V era. In GE's nomenclature RTBA is the relay terminal board: an optional card that extends a drive or exciter with ten relay outputs for switching external circuits. It installs in the drive or exciter cabinet, not inside the Mark V control panel cores (<R>, <S>, <T>, <C>), and it is exactly the kind of electromechanical board that plants like to keep on the shelf, because relays are wear items and lead time is the enemy during an outage.

On the card itself: ten plug-in relays in positions K20 through K29, split seven DPDT and three 4PDT; an LED at each position that lights when the relay can be energized; screw terminals for field wiring; and two connectors — 16-pin RPL and 2-pin OPTPL — that tie the board's I/O to the companion LTBA. Outputs can be driven directly from the pilot relays or commanded remotely. The governing GE document is instruction manual GEI-100167, which includes the relay descriptions, jumper tables, and I/O connections.

Diagnose Before You Order: Three Checks That Save a Swap

• Check the LED at the failed position. Lit LED with contacts that never transfer points at the individual relay — and RTBA relays unplug and replace one at a time. Dark LED points upstream: pilot-relay command path, RPL cable to the LTBA, or board power routing.
• Check the jumper map. This board configures with moveable Berg-type jumpers, including the JP8 power-source selector for the K20–K22 group and the JP9 RPL connection jumper. Wrong jumper positions on a freshly installed spare look exactly like a bad board. Photograph the old board's jumpers before it comes out, and set the new board to match — factory-default settings are not your settings.
• Check the wiring before the electronics. Screw terminals loosened by cabinet vibration cause dropped or chattering loads that get blamed on the card. Torque them and retest first.

If all three checks pass and the fault stays with the board, you have a genuine RTBA replacement on your hands — which is where this factory-packaged unit comes in.

How GE Structured This Part Number

DS200RTBAG2AHC reads as: DS200, the Mark V-era board series; RTBA, the functional acronym for relay terminal board; G2, the configuration group; and AHC, the revision block — functional revisions A and H plus artwork revision C under the usual DS200 convention. The group digit is the one people miss: GE built the RTBA in multiple groups, and a G2 is not a G3 or a G5. Order against the complete string on your board's label. For the general rules, see our GE Speedtronic Part Number Decoder.

Related Mark V-Era Boards

The RTBA's closest companion is the LTBA board, connected through the 16-pin RPL header; a suspected RTBA fault deserves a look at that cable and board too. Around them sits the rest of the DS200 generation — control, excitation, and drive cards — surveyed in GE Mark V DS200 Boards Explained. Browse the GE Mark V DS200 Boards collection for siblings, or the full GE Speedtronic Turbine Control Boards range. And if your plant is debating repair-versus-upgrade, our comparison Mark V vs Mark VI: DS200 to IS200 lays out how the later IS200 hardware differs.

Information We Need to Quote Accurately

• Complete part number with suffix, DS200RTBAG2AHC, plus every marking on the label — a label photo is ideal.
• Turbine or drive model and site application.
• Mark V architecture: Simplex or TMR.
• Quantity — and tell us if you want a second unit quoted as a critical spare while you are at it.
• Urgency: forced outage, planned outage, or stock replenishment.
• Destination country for DDP delivery and any PO requirements.

Request Your Quote — New Surplus, Factory Packaged

This board is new surplus in factory packaging with the one-year warranty shown below. Hit Request a Quote and you will have our answer within 24 hours. We deliver worldwide under DDP terms and accept purchase orders.