RDB2-125 series MCB
3Pages

Catalog excerpts

RDB2-125 Series MCB Usage and its scope of application RDB2-125 Moulded case circuit breaker is one current-limit type MCCB of with over-load and short-circuit double protection. Circuit breaker is suitable for the circuit of AC 50Hz or 60Hz, rated operating voltage up to 230V/400V, rated current up to 125A, as the use of over-load, short-circuit protection of circuit, and it also can be used as infrequently connecting and breaking the electric device and lighting circuit. Circuit breaker confirms to IEC60947-2 and GB14048.2 etc. relevant standards. Rated current of frame size (A) Design serial No. MCCB Enterprise code Normal operating condition and installation condition 3.1 Ambient temperature: -5℃~ +40℃; Average value in 24h does not exceed +35℃. 3.2 Altitude height of Installation places does not exceed 2000m. 3.3 Condition of atmosphere When it is the highest temperature +40℃, the relative humidity does not exceed 50%, and it allows a certain high relative humidity when it is at relatively low temperature. For example, it reaches 90% when 20℃, and it should take special measurements when there occurring condensation due to the temperature variation. 3.4 Pollution grade: 2, 3 3.5 Installation condition: Installing at the places that without obvious impact and vibration, as well as the medium without danger (explosion). 3.6 Installation mode: installed by TH35-7.5 installation rail, and is installed within the distribution box, distribution cabinet. It usually adopts the vertical installation, and the gradient between the installation side and the vertical side does not exceed±5°. 3.7 Installation category: II, III grade

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Characteristics of structure Circuit breaker with high current-limit capacity, thereby largely limit the damage caused by the short-circuit, its characteristics of current-limit to see map 1 Predict peak value of short-circuit current Predict short-circuit current Limited peak value of short-circuit current Limited short-circuit current Main technique parameter Main parameter of circuit breaker to see table 1, over-current protective characteristics to see table 2 Table 1 Frame size Rated current Number of In (A) pole Rated shortcircuit breaking capacity (kA) Mechanical life (times) Table 2...

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External dimension and installation dimension External dimension and installation dimension of circuit breaker to see map 3 Map 3 External dimension and installation dimension Ordering Notice It required to be noted: product model and specification, number of pole, rated current, releasing type, and required quantity. For example, RDB2-125, 100A, 2P, 1000 pcs.

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RDB2-125 series MCB 3Pages

Catalog excerpts

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RDB2-125 series MCB
3Pages