ABB RER 103 Bus Connection Module
The ABB RER 103 is a bus connection module designed to interface ABB RE_500 series protection and control devices with fiber-optic communication networks. Mounted directly to the host device's rear panel via a 9-pin D-type connector, it performs bidirectional optical-to-electrical signal conversion between RS-485 interfaces and SPA, LON, or IEC 60870-5-103 communication buses.
Signal Conversion and Optical Interface
The module converts serial communication data between RS-485 electrical signals and fiber-optic signals at transmission rates up to 1.25 Mbps. Fiber-optic media isolation provides high immunity to electromagnetic interference and electrical noise in substation environments. The unit is available in hardware configurations supporting both plastic and glass fiber optic cables using ST-type optical connectors.
Power Supply and Physical Integration
Operating without an external power source, the module draws its 5 V DC auxiliary power supply directly from the host RE_500 protection relay through the D-type interface connector, with a maximum power consumption of approximately 0.4 W. Its compact plastic housing measures 35 mm $\times$ 73 mm $\times$ 20 mm and connects directly to the rear panel of compatible host units.
| Parameter | Specification |
|---|---|
| Model | RER 103 |
| Brand | ABB |
| Product Type | Bus Connection Module |
| Compatible System | ABB RE_500 Series (REF, REM, RET) |
| Communication Protocols | SPA, LON, IEC 60870-5-103 |
| Electrical Interface | RS-485 |
| Host Connection | 9-pin D-type connector |
| Optical Connector Type | ST connector |
| Signal Conversion | Bidirectional optical-to-electrical / electrical-to-optical |
| Auxiliary Power Supply | 5 V DC (drawn directly from host device) |
| Power Consumption | 0.4 W maximum |
| Maximum Data Rate | 1.25 Mbps |
| Operating Temperature | -10 deg C to +55 deg C |
| Storage Temperature | -40 deg C to +70 deg C |
| Dimensions | 35 mm x 73 mm x 20 mm |
Frequently Asked Questions
Q: How is the RER 103 module powered? A: It derives 5 V DC auxiliary power directly from the host RE_500 protection device via its 9-pin D-type connector.
Q: What communication protocols does the RER 103 support? A: It supports transparent signal conversion for SPA, LON, and IEC 60870-5-103 communication protocols.
Q: What optical connectors and fiber types are supported by the RER 103? A: It features ST-type optical connectors and is available in configurations for both plastic and glass fiber-optic cables.
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| Condition | 100% New with Original Package |
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| Shipping Port | ShangHai, Xiamen |
| Warranty | 12 Months |
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| A: Yes, we collaborate with over 50 countries worldwide. As a top supplier in China, we offer significant discounts based on market trends. |
| Q: What Is the Warranty Period? |
| A: All our new and original products come with a standard one-year warranty. |
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| A: We require 100% T/T (Telegraphic Transfer) payment before shipping. For items with a lead time, a 30% deposit is needed upfront, and the remaining 70% is due before shipping. If you have a representative in China, you can arrange an RMB transfer through them. |
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| Q: What Is Our Delivery Time? |
| A: Delivery usually takes 1-3 days after receiving the initial payment. For items with a lead time, shipping will occur according to the specified schedule. |
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| A: We ensure safe packaging with multiple layers of protection. Products are first placed in their original boxes and sealed with labels. A layer of bubble wrap is then added for collision protection during transit. Finally, the items are packed securely in durable boxes. |
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