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SKU:BC820K02
ABB BC820K02 – Redundant CEX-Bus Unit
Manufacturer: ABB
Product No.: BC820K02
Product Type: Interconnection Unit
Product Origin: SE
Payment:T/T, Western Union
Weight: 1400g
Shipping port: Xiamen
Warranty: 12 months
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Description
ABB 3BSE071500R1 BC820K02 CEX-Bus Interconnection Unit
3BSE071500R1 BC820K02 sections the CEX-Bus into two independent segments up to 200 meters apart. It supports redundant communication interfaces and hot swap. The unit draws power from the processor or an external 24V DC supply.
Key Features
Redundancy – Yes
Hot swap – Supported
External power – 19.2 to 30V DC
CEX-Bus extension – Up to 200 meters
CPU replacement – Online without system stop
Technical Specifications
Article number: 3BSE071500R1 BC820K02
Redundancy: Yes
Hot swap: Supported
Supply voltage: 24V DC (19.2–30V DC)
Current consumption: 120 mA typical, 200 mA max
Power dissipation: 2.9 W typical
Operating temperature: +5 to +55 °C (+41 to +131 °F)
Protection class: IP20
Dimensions: 59 x 185 x 127.5 mm
Weight: 1.4 kg
Cable Requirements
RCU Control Link: Shielded RJ45 crossover cable, T568A to T568B, max 200m.
RCU Data Link: LC Duplex, 50/125μm OM3 fiber, max 200m.
Bus limit: 6 CEX-Bus interfaces per BC820.
Compatible CPUs
PM858, PM862, PM866 (PR.F or later), PM866A, PM866K01 (PR:H or later).
Technical FAQs
Q1. Do I need external power for short cable runs?
A1. No. For runs under 50 meters, the CPU powers the BC820 via the CEX-Bus. Use external 24V for runs over 50 meters or for power redundancy.
Q2. Can I use a standard straight CAT6 cable for the RCU Control Link?
A2. No. The BC820 requires a shielded crossover cable wired T568A to T568B. A straight cable will not work.
Q3. Is the BC820 approved for Zone 1 hazardous locations?
A3. No. The BC820 carries cULus Class 1 Zone 2 certification only. It is not rated for Zone 1.
Additional Specifications
Scalar (V/f)
Vector
AC-powered
Buying Guide
- Confirm the exact model, part number, and specifications before ordering.
- Ensure compatibility with your current machinery or control systems.
- Reach out via sale@etowonauto.com or +8617859788089 for technical assistance.
- Review delivery options, lead times, and shipping requirements.
- Follow manufacturer instructions and best practices during installation.
Shipping And Return
In-stock items are typically dispatched the same business day. For products not currently in stock, dispatch times may vary based on availability. International shipping is available, and shipping costs are calculated according to destination, weight, and carrier selection.
Returns are accepted within 30 days of receipt, provided items are unused and in original condition. Return shipping costs are the responsibility of the customer. Please contact us before returning any item to receive return authorization.
For more details, please review our Shipping & Return Policy.

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