Molded Case Electronic Circuit Breaker (MCECB) is an intelligent power distribution protection device that utilizes microprocessor control technology, featuring precise protection performance and intelligent monitoring functions. The product adopts high-quality engineering plastic enclosure, combining mechanical strength and electrical insulation properties, suitable for low-voltage distribution systems with AC 50/60Hz and rated current of 16-800A.
Operating Environmental Conditions
Altitude : ≤2000m
Ambient Temperature : -5℃ to +40℃
Moisture Resistance : Capable of withstanding humid air
Salt/Oil Mist Resistance : Capable of withstanding salt mist and oil mist
Installation Category : Main circuit of breaker is Category III,
while auxiliary and control circuits are Category II
Humidity : At +40℃, relative humidity should not exceed 50%.
Higher humidity is acceptable at lower temperatures. Special
measures should be taken for occasional condensation due to
temperature changes.
Maximum Inclination : 22.5°
Explosion Hazard : Should be used in non-explosive environments, free from gases or conductive dust that can corrode metal or damage insulation
Weather Protection : Should be installed in areas protected from rain and snow
The circuit breaker complies with standards
IEC60947-1 and GB14048.1 "General Rules for Low-voltage Switchgear and Controlgear"
IEC60947-2 and GB14048.2 "Low-voltage Switchgear and Controlgear - Circuit-breakers" and Appendix F "Additional Requirements for Circuit-breakers with Electronic Overcurrent Protection"
EC 60947-5.1 and GB14048.5 "Low-voltage Switchgear and Controlgear - Control Circuit Devices and Switching Elements".
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