DM1LE Series
Modular Case Residual Current Circuit Breaker
Introduction
DM1LE Series Modular Case Residual Current Circuit Breaker (MRCB, also know as Modular Case Residual Current Device, MRCD) is suitable for circuits with a rated voltage of 400VAC (50Hz) and a rated current of 16A to 800A, in line with GB14048.2 and IEC60947-2 standards. DM1LE series circuit breakers are mainly used to provide indirect contact protection for people who are at risk of electric shock, or to prevent electrical fires caused by contact with fault currents. It can also be used to protect circuits from overload and short-circuit. When other protection measures fail, DM1LE series residual current circuit breaker with a rated residual operating current not exceeding 0.03A can be used as a supplementary protection for direct contact, but it cannot be used as the only direct contact protection. DM1LE series circuit breakers have the advantages of small size, strong breaking capacity and short arcing distance. DM1LE series circuit breakers can be equipped with alarm contacts, shunt releases, undervoltage releases, auxiliary contacts, rotary handle operating mechanisms, electric operating mechanisms and other accessories. DM1LE series circuit breakers have multiple wiring methods such as front wiring, rear wiring and plug-in wiring. DM1LE series circuit breakers can be installed vertically and horizontally.
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Basic Parameters
Poles: 2P; 3P; 4P
Rated working voltage Ue(V): 230; 400
Case Grade Rated Current Inm(A): 125, 250, 400, 630, 800
Rated current In(A): 16, 20, 25, 32, 40, 50, 63, 80, 100, 125, 160, 180, 200, 225, 250, 315, 350, 400, 500, 630, 700, 800
Rated residual operating current IΔn(mA): 30, 50, 100, 200, 300, 500, 1000
Rated residual non-operating current IΔno(mA): 15, 25, 50, 100, 150, 250, 500
Rated ultimate short-circuit breaking capacity Icu(kA): 30, 50, 65, 70
Rated short-circuit breaking capacity Ics(kA): 15, 25, 32.5
Arcing distance (mm): ≤50; ≤100
Mechanical life (times): 2500; 4000; 20000
Electrical life (times): 500, 1000, 2500, 8000
Application Environment
Altitude: ≤2000m；
Air pollution level: Level Ⅲ
Installation category: Class Ⅲ
Ambient temperature: -5℃~+40℃, the average value of 24h does not exceed +35℃. If the circuit breaker works in an environment where the temperature is higher than +40°C or lower than -5°C, please contact us.
Relative humidity: monthly average ≤90% (the average temperature of the month is +25℃); relative humidity ≤50% (when the ambient temperature is +40℃). The relative humidity is related to the ambient temperature. The lower the ambient temperature, the higher the allowable relative humidity. For condensation caused by temperature changes, take appropriate protective measures (such as adding drainage holes).
Installation site: no significant shaking, impact and vibration, and the external magnetic field of the installation site should not exceed 5 times the geomagnetic field in any direction.
* If you need to customize according to your special needs, please contact us.
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