Smart Metering MCCB

MTS3EL

The S3-EL residual current operated circuit breaker has a rated insulation voltage of 1000V and is suitable for use in distribution networks with AC 50Hz, rated voltage 400V and rated current 50A~630A.

Specification Product pictures Data download

The product can not only provide indirect contact protection, effectively prevent fire hazards caused by device insulation damage and ground fault current generation, but also can be used to distribute electric energy to protect lines and power device from overload, undervoltage, short circuit, single-phase grounding and other faults. In addition, the built-in high-precision measurement device realizes high-precision and reliable power measurement and power quality data detection. Support infrared and RS485 communication functions, and can also plug in standard communication modules to support 4G, HPLC, WIFI communication, support cloud platform, and realize remote signaling, telemetry, remote control, and remote adjustment.

Technical Specifications
Item Code		S3EL-125S	S3EL-250S	S3EL-400S	S3EL-630S
Frame Current		125A	250A	400A	630A
Poles		3P+N
Rated Voltage Ue		AC 400V 50Hz		AC 415V 50Hz
Rated Insulation Voltage Ui		AC 1000V
Rated Impulse Withstand Voltage Uimp		8000V
Arcing Distance		≯50mm	≯50mm	≯100mm	≯100mm
Ultimate Short-circuit Breaking Capacity Icu		50kA	50kA	85kA	85kA
Operating Short-circuit Breaking Capacity Ics		35kA	35kA	65kA	65kA
Rated Residual Short-circuit Making (Breaking) Capacity IΔm		12.5kA	12.5kA	16.25kA	16.25kA
Residual Current Operating Characteristics		AC type
Rated Residual Operating Current IΔn		30mA, 50mA, 75mA, 100mA, 150mA, 200mA, 300mA, 400mA, 500mA, 600mA, 800mA, 1000mA, Auto, OFF
Residual Action Time Characteristics		Delay Type
Delay Type Limit Non-driving Time		2IΔn:0.06s
Operational Performance (times)	Electrical Life	1500	1000	1000	1000
	Mechanical Life	8500	7000	4000	4000
	Total	10000	8000	5000	5000
Overload and Short Circuit Characteristics		Three-stage protection, electronically adjustable, see "Protection Features Description" for details
Joint Control Delay Time		≤3000ms
Communication Delay Time		≤500ms
Basic Function		Remote ON/OFF control; high-precision electrical parameter measurement function; power quality analysis function; waveform display function; fault record statistics function; remote signaling, remote adjustment, remote control, and telemetry
General Protection Function		Split-phase short-circuit protection; split-phase inverse time overcurrent protection; split-phase/summed power overload protection; upper and lower terminal temperature over-temperature alarm, warning; phase loss; phase sequence; three-phase unbalance; overvoltage and undervoltage warning, alarm; leakage current protection; field setting current
Measurement Accuracy		Voltage, current,power level 0.5; energy metering level 1
PV Grid-connected Protection Function		Island judgment, power failure and disconnection, monitoring grid status recloser, sharp, peak, shoulder, off-peak statistics