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PRODUCT POSITION:HOMEPRODUCT—PFRA101
PFRA101
PFRA101 – ABB Power Supply Module Type: Redundant Power Supply Unit Function: Dual-channel power backup for critical systems Key Features: Input: 120/230V AC Output: 24V DC, 20A Automatic failover (<1ms switch) Hot-swappable design Applications: Process control cabinets DCS/PLC systems Certifications: CE, UL, IEC 61508
DESCRIBE
PFRA101 – Technical Specifications
General Information
Manufacturer: ABB

Model: PFRA101

Type: Redundant Power Supply Module

Application: Backup power for critical automation systems

Electrical Parameters
Input Voltage:

120/230V AC (auto-sensing, 50/60Hz)

Output:

Voltage: 24V DC (±1%)

Current: 20A (continuous)

Power: 480W

Redundancy:

Automatic failover (<1ms switch time)

Load sharing (active parallel operation)

Protection & Monitoring
Protections:

Overvoltage (28V cutoff)

Overcurrent (110% limit)

Short-circuit

Status Indicators:

LED for power/fault/load sharing

Mechanical & Environmental
Mounting: DIN Rail (35mm)

Dimensions: 125 × 60 × 130 mm (W×H×D)

Cooling: Convection + forced air (fan optional)

Operating Temperature: -25°C to +70°C

Humidity: 5–95% RH (non-condensing)

Protection Class: IP20

Compatibility
Systems:

ABB AC 800M PLCs

S800 I/O modules

Certifications
Standards: IEC 61508, UL 508

Safety: SIL 2 (system-dependent)

Key Advantages:
✔ Hot-swappable for zero downtime maintenance
✔ Active current sharing for balanced load
✔ Wide input range for global use
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