ABB 1MRK002239-BBR02 | SR91C790 Power Supply Module

Description

The ABB SR91C790 (1MRK002239-BBR02) is a high-performance power supply module designed for industrial automation and protection relay systems. It provides stable DC voltage to internal electronic components, ensuring reliable operation under fluctuating grid conditions with robust electromagnetic compatibility.

 

Parameters

• Part Number: 1MRK002239-BBR02
• Model Code: SR91C790
• Input Voltage: Wide range AC/DC (typically 110-250V)
• Output Power: High-efficiency regulated DC output
• Mounting: Plug-in module for ABB rack systems
• Protection: Over-voltage, short-circuit, and thermal protection

 

Specifications

• Brand: ABB
• Origin: Sweden/Germany
• Interface: Multi-pin connector for backplane integration
• Cooling: Natural convection
• Operating Temp: -25°C to +70°C
• Standard: IEC 60255 compliant

 

Applications

• Substation Automation: Used in protection and control terminals.
• Power Distribution: Powering intelligent electronic devices (IEDs).
• Industrial Plants: Integration into larger PLC or DCS control frameworks.
• Grid Monitoring: Reliable power for fault recording and telemetry.

 

Q&A

• Q: Is the SR91C790 hot-swappable?
  • A: It is a plug-in module, but power should be isolated before removal to prevent arcing.
• Q: Does it include diagnostic indicators?
  • A: Yes, it features front-panel LEDs for “Power OK” and “Fault” status monitoring.
• Q: Can this replace older 1MRK series power units?
  • A: Yes, provided the hardware revision and voltage ratings match the system backplane requirements.

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One year warranty, special discount after sale
The company focuses on DCS, PLC, robot, large servo four systems
The main products are all kinds of module/card, controller, touch screen, servo drive
The company's advantages: the supply of imported original products, professional production of accessories
Fast delivery time, complete supply, The seller has more than $1526000 worth of industrial control products inventory
We Can transport to the world！！！
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[service contact information]
Purchase and consultation hotline: +8613365909307 (Whatsapp/ Wechat)
E-mail: dcsplcsales@gmail.com
Contact Person: Simon
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