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Redundant module 20 A Dimension Series

12-28 V DC, 2x10 A

  • For N+1 and 1+1 Redundant Systems
  • MOSFET transistors
  • Minimum power loss

Product description

The YR20.242 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.


In addition to the YR20.242, the YR20.246 is available which is featured with an automated load sharing

between the connected power supplies and functions which monitor defects in the redundancy circuit or too

high output currents, which could prevent redundancy, if one power supply fails.


The YR20.242 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 12-28V dc 10A I/P 12-28V dc 20A O/P

Technical data

Input data

Input voltage dc 12-28 V
Input voltage dc min 8,4 V DC
Input voltage dc max 36,4 V DC
Input current per channel max 20 A
Input current at continuous overload or short circuit max 2x24 A

Output data

Output voltage 24 V DC
Output current 20 A
Output current max 26 A

Efficiency / Lifetime / MTBF

Life span 355000 h @ 2x 20 A, 24 V DC, 40 °C
MTBF (IEC 61709) 7895000 h @ 2x 20 A, 24 V DC, 40 °C


Width 32 mm
Height 124 mm
Depth 127 mm
Weight 0,25 kg


Input / Output Separation Mosfet
Approvals ATEX, CB, CE, CSA, CSA US, UL
IP class IP20
Material protection Aluminium
Series Dimension Y
Voltage drop over semiconductor 110 mV
Temperature min without derating -40 °C
Temperature max without derating 70 °C
Type Power Supply Redundancy modules
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