Technical Specifications

Parameter Name	Value
Product Model	3BDH000505R1
Manufacturer	ABB
Product Type	System Power Supply Module (DIN-Rail Mount)
Input Voltage	100–240 V AC (85–264 V AC wide range) ±10%; 50/60 Hz
Output Voltage	24 V DC ±1% (adjustable ±5% via potentiometer on some revisions)
Rated Output Current	10 A (240 W) @ 24 V DC, 45°C ambient
Efficiency	≥ 89–91% (typical high-efficiency SMPS)
Ripple & Noise	< 50 mV p-p (20 MHz bandwidth)
Parallel / Redundancy	Yes — up to N+1 parallel with OR-ing diode module for 1+1 redundancy
Protection Features	Short-circuit (hiccup/fold-back), overload, overvoltage crowbar, overtemperature shutdown, inrush current limiting
Indicators	Green LED: DC OK / Output Healthy; Red/Yellow LED: Fault / Pre-alarm
Operating Temperature	-25°C to +60°C (derating above 45°C–50°C depending on load)
Storage Temperature	-25°C to +70°C
Mounting	35 mm DIN rail (EN 60715 / TS35), screw-terminal connections
Certifications	CE, UL 508 / UL 60950-1, cULus, GL (marine), IEC 61010-1
Dimensions (approx.)	110 × 82 × 124 mm (H × W × D — typical for 240 W DIN unit)
Weight (approx.)	0.9–1.1 kg

 

Main Features and Advantages

Redundancy-Ready Parallel Operation with Diode OR-ing

The ABB 3BDH000505R1 is specifically designed to support N+1 parallel redundancy using an external OR-ing diode module (such as ABB SD833 or CP-DRED) . In a 1+1 configuration, if one ABB 3BDH000505R1 fails, the other seamlessly carries the full load without any process interruption, transfer switch, or voltage dip. This capability is critical for SIL-rated and continuous-process applications where power supply failure would otherwise trigger a plant shutdown.

Wide-Range Universal AC Input with Active Power Factor Correction

The ABB 3BDH000505R1 accepts 85–264 V AC without manual voltage selection and features active PFC (power factor > 0.9). A single ABB 3BDH000505R1 works on 110 V site power in North America or 230 V in Europe/Asia, and tolerates voltage sags/swells that would trip lesser linear supplies . This flexibility is particularly valuable for plants with unstable grids or generator-backed sections.

Diagnostic Indicators and Proactive Alarm Outputs

The front-panel “DC OK” LED on the ABB 3BDH000505R1 provides at-a-glance status; select revisions offer a transistor or relay-ready fault signal that can be wired directly to the DCS digital input . This enables operators to raise a “Power Supply Degraded” alarm proactively, allowing spare replacement to be scheduled during a planned outage rather than after a catastrophic failure.

Robust Protection Suite and Industrial-Grade Construction

The ABB 3BDH000505R1 incorporates comprehensive protection features including short-circuit (hiccup/fold-back), overload, overvoltage crowbar, overtemperature shutdown, and inrush current limiting . Its IP20-rated enclosure provides basic splash and dust protection suitable for control cabinet installation, while its wide operating temperature range ensures reliable performance in demanding industrial environments.