Original ABB horizontal‑left compact bus extender for Symphony Plus HN800 I/O system, bus and 24VDC power distribution spare part.

Product Overview

CHBX01L (2VAA008574R1) is left‑side horizontal compact bus extender for ABB Symphony Plus HN800 I/O system. It extends HN800 internal system bus horizontally, realizes interconnection between multi‑group HN800 I/O modules, meanwhile distributes 24VDC module power supply for extended I/O segments. It ensures stable signal transmission and power supply for expanded I/O rows, improves system I/O capacity layout flexibility. Compact DIN‑rail mounting structure, IP20 cabinet‑grade hardware. Widely used as maintenance spare part for power‑plant, petrochemical and process‑industry Symphony Plus DCS control cabinets.

Key Features

• Horizontal left‑side bus extension for ABB HN800 I/O row expansion
• Integrates HN800 system signal bus extension and 24VDC module power distribution
• Supports cascading to expand quantity of connected HN800 I/O modules
• Compact slim‑body design, saves cabinet installation space
• Industrial‑grade anti‑interference circuit for stable bus signal transmission

• Standard 35 mm DIN‑rail mounting, convenient on‑site installation and replacement

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Technical Specifications

• Brand: ABB
• Model: CHBX01L, 2VAA008574R1
• Module Type: Compact Horizontal‑Left Bus Extender
• System Platform: Symphony Plus HN800 I/O System
• Power Supply: 24VDC
• Weight: Approx 0.094kg
• Operating Temp: ‑25℃ ~ +60℃
• Storage Temp: ‑40℃ ~ +85℃
• Humidity: 5‑95% non‑condensing
• Protection Class: IP20

• Installation: 35 mm DIN‑rail mounting

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Compatibility

Compatible with ABB Symphony Plus HN800 series I/O modules. Bus connection inspection and power distribution test required after replacement.