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RNB22 compact, high-efficiency primary switch mode power supply for DIN rail interface systems

RNB22 system power supply unit

Safely power system interfaces on the DIN rail bus

RNB22
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RNB22 system power supply unit for 24 VDC / 2.5 A output
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©Endress+Hauser

RNB22 system power supply for DIN rails for one 4 wire sensor or transmitter

The RN Series interface devices
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©Endress+Hauser

RN Series interface devices

RN Series interface devices installed in a control cabinet
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RN Series compact interface devices being commissioned in a control cabinet

RNB22 system power supply for DIN rails for one 4 wire sensor or transmitter

Specs at a glance

  • Output

    24...28 V DC

  • Power Supply

    100…240 V AC/DC

Field of application

The RNB22 is a compact, high-efficiency primary switch mode power supply for DIN rail interface systems. It delivers a reliable, single-phase, 24 VDC / 2.5 A output and runs on a wide-range input from 100 to 240 VAC / 110 to 250 VDC, with a dynamic and static boost of 5 A and 3.125 A respectively.
When run in parallel with the RNF22 error message module, the RNB22 provides redundancy, increased capacity, as well as function monitoring to report critical operating states before errors occur.

  • High-efficiency 24 VDC / 2.5 A power supply with low power dissipation 

  • Parallel mode with RNF22 for redundancy 

  • Suited for decentralized applications or remote cabinets 

  • Compact housing efficient use of space in control cabinets 

  • Low heat dissipation, no lateral clearance required 

  • Ambient temperature range: –25 to 70 °C (–13 to 158 °F)

Benefits

  • Safe and reliable, single-phase output in the power range up to 100 W

  • Smart system function monitoring for fault prevention for high system availability

  • Powerful reserve capacity for lower power ranges

  • Transient surge protection, short-circuit proof, no-load proof

  • Tool-free installation, suited for vertical or horizontal mounting

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