1. Key models

CG2161, CG2162 and so on

2. Product overview

The CG2161 is designed for temperature rise monitoring at contacts of various low-voltage circuit breakers and connection points of low-voltage busways. This system utilizes high-precision sensors and advanced microprocessor technology to deliver real-time, high-accuracy temperature monitoring of contacts in low-voltage circuit breakers. It provides preemptive alerts for overheating risks, effectively preventing equipment damage or safety incidents caused by thermal stress, thereby ensuring enhanced reliability and safety of power distribution systems.

3. Functions & features

● Precise monitoring and intelligent control

High-precision sensing: temperature accuracy: ±1°C (-20°C ~ +100°C)

Intelligent control mode: Utilizing an ARM microprocessor and digital signal processing (DSP) technology, the system provides real-time monitoring of six contact temperature channels and one cabinet ambient temperature/humidity channel, automatically analyzing temperature trend variations.

Adjustable parameters: Users can set alarm thresholds according to their needs.

Remote management: RS485 MODBUS protocol     

Baud rate: 4800, 9600

• Safety and protection

Anti-interference performance: Electromagnetic compatibility level III

Insulation strength: IEC 60255-5 2KVrms-1min

Alarm Mechanism: Threshold-based audible/visual alarms (user-configurable) and rate-of-temperature-rise alarms.

● Easy installation:

Modular design enables tool-free installation without requiring major retrofitting of existing switchgear.

Support DIN rail mounting or screw fastening, compatible with a wide range of low-voltage switchgear configurations.

4. Technical specifications

● Front panel display: cyclically shows temperatures of upper and lower contacts on low-voltage circuit breakers, along with one ambient temperature/humidity channel

● Measurement function: Six (6) channels of contact temperature monitoring points, plus one (1) channel for cabinet ambient temperature/humidity

● Temperature measurement range: -20℃-100℃   

● Power supply and power consumption: AC220V土15%，   ≤5W

● Alarm output relay: 220VAC/3A (passive contact-normally open)

● Communication output interface: RS485, MODBUS Protocol, Baud rate: 4800, 9600

5. Applications

Distribution room/substation: temperature monitoring of low-voltage switchgear circuit breaker contacts, busbars, and cable joints.

Industrial plants: production line distribution cabinets, high current circuit contact monitoring.

Commercial complex: temperature management of dense bus ducts and distribution box contacts.

Renewable energy applications: targeted thermal protection solutions for PV combiner boxes and EV charging pile power distribution systems.