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Redundant module 20 A Dimension Series

24-28 V DC, 2x10 A

  • For 1+1 Redundancy
  • MOSFET transistors
  • Minimum power loss
  • Automated Load Sharing

Product description

The YR20.246 is a redundancy module for building redundant power supply systems. It is equipped with

two input channels and one output. The two inputs are decoupled by MOSFET technology.


The device is equipped with an automated load sharing feature, which can compensate a small voltage imbalance between the power supplies connected to the inputs in order to achieve an even current share. It

also monitors the function of the redundancy circuitry and provides a signal in case of a failure or a high output current, which could prevent redundancy if one power supply fails. If this feature is not required the

YR20.242 is available.


The redundancy utilizes MOSFETs instead of diodes for the decoupling of the two input channels. This reduces the heat generation and the voltage drop between input and output. The redundancy module does not

require an additional auxiliary voltage.


Due to the low power losses, the unit is very slender and only requires 32mm width on the DIN-rail. Large

connection terminals allow for a safe and fast installation. The large international approval package makes this unit suitable for nearly every application.



Redundancy Module 2 x 24-28V dc 10A I/P 24-28V dc 20A O/P

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Input voltage DC 24-28 V
Input voltage dc min 18 V DC
Input voltage dc max 35 V DC
Input current per channel max 12 A
Input current at continuous overload or short circuit max 24 A
Type Power Supply Redundancy modules
Output voltage 24 V DC
Output Current 20 A
Output current max 26 A
Temperature Range Without Derating From -40 °C
Temperature Range Without Derating To 70 °C
Life span 182000 h @ 2x 20 A, 24 V DC, 40 °C
MTBF (IEC 61709) 1954000 h @ 2x 20 A, 24 V DC, 40 °C
Width 32 mm
Height 124 mm
Depth 127 mm
Weight 0,31 kg
Series Dimension Y
Approvals ATEX, CB, CE, CSA, CSA US, UL
Material Protection Aluminium
IP Class IP20
Voltage Drop Over The Semi-Conductor 500 mV
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