GE DS200DCFBG2BNC-MRP433745 – Control Power Supply Board for GE Mark V and Legacy Drive Cabinets

The DS200DCFBG2BNC-MRP433745 is a GE control power supply board that typically sits at the heart of Mark V Speedtronic systems and several legacy GE drive/excitation cabinets. Its main job is straightforward yet critical: convert cabinet control power into stable low-voltage rails (such as +5 V, ±15 V, +24 V) for logic, I/O, and analog sections. From my experience, this specific G2 variant is favored in retrofit and maintenance programs because it drops into existing wiring with minimal adjustment and tends to be very forgiving in mixed-age cabinets.

Company’s Order Placement Process and Guarantees

• Warranty: 365 days
• Delivery: typically 1 week if in stock; not more than one month at the latest
• Payment: 50% advance payment; full payment before delivery
• Express options: FedEx, UPS, DHL
• Order steps: Confirm model and revision → Receive quotation and lead time → Issue PO and prepayment → Functional testing and packing → Final payment and shipment

Key Features

• Multiple regulated DC rails – Provides stable +5 V logic, ±15 V analog, and +24 V auxiliary power in most configurations, keeping control and I/O stages powered consistently.
• Cabinet-friendly input – Designed to be fed from the cabinet’s control transformer (commonly 115 Vac, 50/60 Hz), simplifying replacements without rewiring.
• Protection and monitoring – On-board fusing, test points, and status LEDs (where fitted) help maintenance teams diagnose issues quickly and safely.
• Form-fit-function continuity – The G2 board layout and connectors align with established GE Mark V and legacy drives, reducing conversion risk.
• Stable performance in industrial environments – Appears to handle electrical noise and temperature swings well when installed in a ventilated, sealed cabinet.
• Serviceable design – Through-hole components in many areas mean recapping and field-level repairs are practical in many cases.

Technical Specifications

Brand / Model	GE (General Electric) / DS200DCFBG2BNC-MRP433745
HS Code	853890 (Parts suitable for use with industrial control apparatus)
Power Requirements	Nominal 115 Vac control power input (50/60 Hz) from cabinet transformer; current draw depends on cabinet loading
DC Outputs (typical)	+5 V logic; +15 V and −15 V analog; +24 V auxiliary (exact ratings depend on cabinet and revision)
Dimensions & Weight	Approx. 280 × 216 mm (11.0 × 8.5 in); ~0.8 kg (typ.)
Operating Temperature	0 to +60 °C (cabinet ambient, non-condensing)
Signal I/O Types	Ribbon/edge connectors and terminal points for AC input, DC outputs, and feedback sensing
Communication Interfaces	Not applicable (power supply board; no fieldbus)
Installation Method	Panel/rack mounting inside GE cabinet; secured with standoffs and screws; plug-in ribbon/edge connections

Application Fields

You’ll typically find the DS200DCFBG2BNC-MRP433745 in:

• GE Mark V Speedtronic turbine control panels (gas and steam)
• Legacy GE drive systems (e.g., DC/AC drive families) and EX-series excitation cabinets
• Process industries where reliable control power is essential: metals, paper, chemicals, and power generation

One thing I appreciate is how it supports mixed analog/digital loads without the regulation drifting, which is a common headache in older cabinets. A maintenance lead at a combined-cycle plant told us they swapped this board during a planned outage and saw a noticeable reduction in nuisance resets afterward.

Advantages & Value

• Reliability that reduces downtime – Clean, stable rails help stop random controller trips and extend life of downstream cards.
• Drop-in compatibility – Form-fit with established GE layouts minimizes wiring changes and commissioning time.
• Lifecycle support – Readily serviceable; parts availability seems to be better than many niche alternatives.
• Procurement clarity – Clear revisioning (G2/BNC) helps match plant spares policy and avoid return loops.
• Technical support – We can assist with pre-shipment testing parameters and output verification so you receive a ready-to-install unit.

Installation & Maintenance

• Environment: Install in a sealed, ventilated control cabinet (IEC/UL enclosure), free from conductive dust and condensation.
• Safety: Lockout-tagout; verify DC bus discharge; wait the manufacturer-recommended time before handling; use ESD protection.
• Mounting: Use standoffs and the original hardware; do not stress ribbon or edge connectors; check harness strain relief.
• Wiring: Verify control transformer tap (typically 115 Vac); confirm correct polarity and ground; inspect fusing values.
• Commissioning: Measure each rail at test points under load; check ripple with a scope if available; confirm LEDs/status where applicable.
• Routine care: Visual inspection each outage; recap as needed (aging electrolytics); clean dust with dry, oil-free air; tighten terminals.

Quality & Certifications

• Manufacturer compliance: UL/CE alignment at system level for the original assemblies
• Quality system: Typically produced under ISO 9001 quality management (plant-dependent)
• RoHS: Legacy spare; RoHS status may vary by production lot and timeframe—check with us if you require RoHS documentation
• Warranty: 365 days test-backed warranty coverage
• Test reports: Functional test data can be provided on request with shipped units

Related/Supporting Components

Plants often pair this board with other GE modules during a refresh:

• DS200SDCC series (Drive/Control CPU cards) – relies on stable +5 V and ±15 V feeds
• DS200PCCx power interface boards – for power conversion and I/O interfacing
• DS200-style I/O terminal boards – analog and discrete I/O that benefit from the ±15 V rails

Note: The “MRP433745” suffix is commonly used as an internal or stocking/repair reference. The functional core model is DS200DCFBG2BNC. If your cabinet BOM lists a slightly different ending, share a photo of the nameplate and we’ll cross-check compatibility.