Pepperl+Fuchs KFD2-EB2.R4A.B | Redundant Power Supply Module, 24

Pepperl+Fuchs KFD2-EB2.R4A.B | Redundant Power Module for DIN Rail Power Rail Systems

Overview

The KFD2-EB2.R4A.B (189784) from Pepperl+Fuchs is a redundant power feed module that supplies up to 4 A of current to the Power Rail in intrinsically safe control systems. It enables dual-redundant 24 V DC input for reliable operation of connected isolators and barriers.

Designed for DIN rail mounting, this unit provides fault monitoring via relay contact, visual LED status, and is ideal for powering large numbers of interface modules in hazardous area control panels.

Key Features

• Redundant Power Supply Support – Dual 24 V DC inputs for fail-safe operation

• Output Current: Up to 4 A to Power Rail

• Input Voltage Range: 20–30 V DC

• Built-In Relay Output: For system fault indication

• LED Indicators: Green (Power OK), Red (Fault)

• DIN Rail Mountable: Compact 20 mm width

• Integrated Replaceable Fuse: 5 A

Technical Specifications

• Model: KFD2-EB2.R4A.B

• Part Number: 189784

• Input Voltage: 20 to 30 V DC

• Output Current: 4 A max. to Power Rail

• Output Voltage: ≥ input voltage - 0.6 V

• Fuse Rating: 5 A replaceable (glass fuse)

• Power Dissipation: ≤ 2.4 W

• Fault Relay Output:

  • Max 30 V AC/2 A or 40 V DC/2 A

  • Configurable for NO or NC switching

  • Delay: ~20 ms energized/de-energized

• Indicators:

  • Green LED: Power ON

  • Red LED: Error / fault

• Ambient Temperature Range: -40 °C to +60 °C (extendable to 70 °C with vertical spacing)

• Protection Class: IP20

• Mounting: 35 mm DIN rail (EN 60715)

• Dimensions: 20 mm (W) × 119 mm (H) × 115 mm (D)

• Weight: Approx. 150 g

Applications

• Process Control Panels – Provides reliable power to DIN rail isolators and signal conditioners

• Hazardous Area Installations – Designed for Zone 2 systems with Power Rail

• Redundant Safety Systems – Ensures uninterrupted power in safety-critical applications

• Modular Automation Racks – Supports large-scale signal distribution setups

Why Choose the KFD2-EB2.R4A.B?

• Supports redundant 24 V DC supply

• Powers up to 4 A of Power Rail devices

• Relay output for status feedback

• Slim 20 mm design saves panel space

• Pepperl+Fuchs quality and SIL-compliant system integration

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NEW product in original sealed packaging. The product may be of older version or design. The packaging may have markings, signs of discoloration, and wear. DDPARTSSOLUTION Warranty: 1 Year. Manufacturer's Warranty and Support NEVER apply