3BDH000012R1 | SD802F | ABB S800 I/O Redundant Power

Product Description

The SD802F (Part Number: 3BDH000012R1) is a high-availability redundant power supply module designed for the ABB Freelance distributed control system (DCS) and S800 I/O architectures. Unlike standard transmitters, this unit serves as a critical power infrastructure component, providing a stabilized 24 VDC output to controllers, I/O modules, and field instrumentation.

Engineered for mission-critical automation, the SD802F 3BDH000012R1 supports parallel redundancy, allowing multiple units to be connected to ensure continuous system operation even if one module fails. It features integrated diode shunts for de-coupling, protecting the system from internal short circuits. Its rugged, G3-compliant construction provides superior resistance to corrosive atmospheres, making it an essential choice for refineries, chemical plants, and offshore platforms where downtime is not an option.

Detailed Technical Specifications

The SD802F is optimized for deterministic power delivery and heat dissipation in enclosed industrial cabinets.

• Manufacturer: ABB

• Model Number: SD802F

• Part Number: 3BDH000012R1

• Product Type: Redundant Power Supply Module

• Input Voltage: 115/230 V AC (Auto-ranging or switchable depending on revision)

• Output Voltage: 24 VDC (Stabilized)

• Output Current: 5A (Standard) / Supports parallel load sharing

• Redundancy Features: Built-in de-coupling diodes for parallel operation

• Mains Buffering: > 20 ms (at nominal load)

• Efficiency: > 85% at nominal load

• Environmental Protection: G3 Conformal Coating (Standard for harsh environments)

• Operating Temperature: -25°C to +70°C (-13°F to +158°F)

• Mounting: 35mm DIN rail compatible

• Dimensions: 140 mm x 120 mm x 70 mm

• Weight: 1.30 lbs (0.6 kg)

• Certifications: CE, UL, CSA, ATEX, and IECEx compliant

• Status Indicators: Front-panel LEDs for "Input OK" and "Output OK" diagnostics