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SMG-ESR Smart Gateway
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SMG-ESR Smart Gateway

The CHINT SMG-ESR Smart Gateway is a high-performance Open Protocol Gateway that enables seamless communication between CHINT smart devices and user-defined IoT platforms. Using Ethernet (MQTT) for upstream data transmission and RS-485 (Modbus RTU) for downstream connectivity, it supports reliable data exchange, remote control, and energy monitoring. With its web-based configuration, plug-and-play design, and full compatibility with CHINT NB2 smart circuit breakers, the SMG-ESR delivers flexible integration and real-time monitoring for smart power systems.

Product Information

Name
Size
Release time
Operate
2507-Configuration Guide of SMG-WSR and SMG-ESR Open Protocol Gateway-Catalog.pdf
22MB
2025-07-15
Download
2504-SMG-WSR ESR-Open Protocol Gateway-Catalog.pdf
222.09KB
2025-07-15
Download
Name
Size
Release time
Operate
2412-SMG-WSR ESR-Open Protocol Gateway-Manual.pdf
1.06MB
2025-04-28
Download
How to configure SMG-WSR Open Protocol Gateway V2.pdf
878.61KB
2025-04-28
Download
MQTT communication table--SMG-WSR Open Protocol Gateway (V1.9).pdf
565.99KB
2025-04-28
Download
Name
Size
Release time
Operate
2504-SMG-ESR-Gateway-CE Certificate-EMC.pdf
534.44KB
2025-04-28
Download
2504-SMG-ESR-Gateway-CE Certificate-LVD.pdf
325.22KB
2025-04-28
Download
2504-SMG-ESR-Gateway-CE RoHS Declaration Certificate.pdf
545.83KB
2025-04-28
Download
Name
Size
Release time
Operate
2503-SMG-ESR-Gateway-Drawing-2D.dwg
127.58KB
2025-04-28
Download
2503-SMG-ESR-Gateway-Drawing-2D.pdf
24.38KB
2025-04-28
Download
2503-SMG-ESR-Gateway-Drawing-3D.stp
4.1MB
2025-04-28
Download

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SMG-WL1SR Smart Gateway SMG-WL1SR Smart Gateway
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SMG-WSR Smart Gateway SMG-WSR Smart Gateway
View Details Documents
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FAQs

 

What is the function of the SMG-ESR Smart Gateway?

The SMG-ESR acts as a data protocol converter, transmitting Modbus RTU device data (JSON format) to a user-defined cloud or local MQTT platform for real-time energy monitoring and remote control. 

 

How does it differ from the SMG-WSR model?

While both models support MQTT and Modbus RTU, the SMG-ESR uses Ethernet for upstream communication, providing a more stable and interference-free data link compared to Wi-Fi.

 

How is the SMG-ESR configured?

Configuration is performed via a local web interface accessible through Ethernet. Users can set MQTT parameters, device files, and manage connected NB2 devices directly through the browser interface.

 

What kind of devices can it connect to?

The SMG-ESR supports all Modbus RTU-compatible equipment, including NB2 Smart Circuit Breakers, and allows automatic NB2 addition and data collection through the RS-485 interface. 

 

What environments is it suitable for?

Designed for durability, it operates from −25 °C to +70 °C at altitudes up to 2000 m, with IP20 protection and a V-0 flame-retardant rating, making it ideal for industrial and building energy systems.

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