Technical details System pro M compactÂ®

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Systempro M compact ®Technical detailsPerformances at different ambienttemperatures, altitudes and frequenciesMCBs2. Multiply the rated current (equivalent) referring to the new temperature by another factor0.9 only for loads that last for more than an hour.3. Multiply the rated current (equivalent) referring to the new temperature by another factoronly in case of presence of several devices installed alongside each other; see table.Influence of adjacent devices1.00.9Fm Factor0.80.70.61 2 3 4 5 6 7 8 9Number of devicesOEPM0108Influence of adjacent devicesCorrection factor FmNo. of adjacent devices Fm1 12 0.953 0.94 0.865 0.826 0.7957 0.788 0.779 0.76>9 0.76Example: S 202 C 16 with T=35 °CType of use Values to use Formula Calculation ResultLoad less than an hour In (amb. t°) -see tables- In=15.43 ALoad more than an hour In (amb. t°) -see tables-, 0.9 In (amb. t°)x0.9 15.43x0.9 In=13.9 ALoad over an hour with 8 adj.devices In (amb. t°) -see tables-, 0.9, Fm (0.77) In (amb. t°)x0.9x0.77 15.43x0.9x0.77 In=10.7 A1111/54 ABB
Systempro M compact ®Technical detailsUse of MCBs in direct current circuitsMCBsUse of S 200/S 200 M/S 200 P miniature circuit-breakers in directcurrent circuits 60 VDC/125 VDCIn DC systems up to 60 VDC or, as the case may be, series connection up to 125 VDC, customaryS 200/S 200 M series MCBs can be used. Polarity does not need to be taken into consideration,the outgoing circuit may be implemented from above or below the device.For higher direct voltage up to 440 VDC devices of the S 280 UC series must be used.Example for max. permissible voltages between conductors depending on the number ofpoles and type of connection.Examples for different voltages between a conductor and earth where voltages betweenconductors are identical:SK 0174 Z 99SK 0173 Z 99Performance in altitude of MCBsUp to the height of 2000 m, MCBs do not undergo any alterations in their rated performances. Overthis height the properties of the atmosphere change in terms of composition, dielectric capacity,cooling capacity and pressure, therefore the performances of the MCBs undergo derating, whichcan basically be measured in terms of variations in signifi cant parameters, such as the maximumoperating voltage and the rated current.S 200/M/PAltitude[m] 2000 3000 4000Rated service voltage Ue[V] 440 380 380Rated current In In 0.96xIn 0.93xInVariation of tripping thresholds of MCBs according to networkfrequencyThe circuit-breakers are calibrated for a current with a frequency range between 50 and 60 Hz.11For other frequency values, the electro-magnetic tripping current varies according to the multiplicationfactor H.D.C. 100 Hz 200Hz 400HzH 1.5 1.1 1.2 1.5For the thermal trip, on the other hand, there is no variation because it is independent of the networkfrequency.Example:S 202 C10 supplied at 50-60 Hz, the electro-magnetic tripping current is: 50 A≤I m≤100 A;S 202 C10 supplied at 400 Hz, the electro-magnetic tripping current is: 75 A≤I m≤150 A.ABB11/55
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