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Self-reclosing MCCB with Leakage-protection


MTM5-EL is an integrated system of smart meters, breakers, and communications. This earth leakage circuit breaker device can realize real-time analysis and display of electrical faults and trip: earth leakage, overload, overvoltage, undervoltage, phase loss, and device locking. These electrical faults and trip information may be recorded on both the device and platform.

The system can realize a pre-alarm before loading failure and full protection. It provides online power management that can prepaid metering function with AMR, billing system and online payment. It realizes real-time power efficiency monitoring and real-time monitoring of electrical circuit breaker parameters (voltage, current, residual current, etc.) that can help identify energy savings and further reduce energy costs through the analysis of collected data. It also has bidirectional communications, remote control, and remote lock. For data protection, it can provide tamper event detection, recording, and reporting. For earth leakage circuit breaker protection can offer power-event alarms.


Technical Specification

Item Code MTS3-EL125 MTS3-EL250 MTS3-EL400 MTS3-EL630
Standards IEC60947-2, IEC61009
Approvals CCC, CE
Poles 3P+N
Frame Current (A) 125 250 400 630
Rated Current (A) 40,50,63,80,100,125 100,125,140,
Rated Voltage (Vac) 400
Insulation Voltage (Vac) 800
Frequency (Hz) 50/60
Rated Impulsed Withstand Voltage Uimp (Vac) 8000
Acing Distance (mm) >50 >100
Rated Ultimate Short-circuit Breaking Capacity, Icu (kA) 50 65
Rated Operating Short-circuit Breaking Capacity, Ics (kA) 35 42
Rated Residual Making and Breaking Capacity (I∆m) (kA) 12.5 20
Type (Wave Form of the Earth Leakage Sensed) AC
Rated Residual Current (I∆n) (mA) 50, 100, 200, 400, 600, 800, AUTO, OFF 100, 200, 300, 500, 800, 1000, AUTO, OFF
Breaking Time Under I∆n for Delay Type (s) 0.06/0.1/0.2 for option, 2 I∆n
Breaking Time (s) I∆n<=0.5, 2 I∆n<=0.2; 52 I∆n<=0.15
Auto-recloser Time (s) 20-60
Over Voltage Protection Value (Vac) 250-300(+/-5%)
Under Voltage Protection Value (Vac) 150-200(+/-5%)
Remote Control Delay Time (ms) <=40ms
Communication Delay Time (ms) <=200ms
Protections Overload, Short-Circuit, Earth Leakage, Auto-reclose, Phase Loss, Over voltage and Under voltage
Monitoring of Electrical Circuit Parameter Current, Voltage, Power, Temperature, Frequecy, Power factor
Parameter Value Setting Rated residual current value, Long-delay time for overload, Short-delay time for Short circuit, Instantaneous time for Short Circuit, Over votlage protection value, and Under voltage protecdtion value.
Electric Life (times) 1500 1000 1000 1000
Mechanical Life (times) 8500 7000 4000 4000
Connectivity RS485, infrared and Added-on communication of WIFI, TCP, GPS, NB-IoT, LoRa, Zigbee RS485, infared, WIFI, TCP integrated inside. Added-on communication of WIFI, TCP, GPS, NB-IoT, LoRa, Zigbee RS485, infrared and Added-on communication of WIFI, TCP, GPS, NB-IoT, LoRa, Zigbee
Software App and software platform for option
Communication Protocal TCP, Modbus
Pollution Degree 2
Ambient Temperature (°C) -55 - +40
Storage Temperature (°C) -25 - +70
Humidity <50%
Altitude (m) <=2000
Connection From top to bottom


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