DISJUNTOR CORRENTE RESIDUAL DFS 4 040-4/0,03-B SK MI HD

DISJUNTOR CORRENTE RESIDUAL DFS 4 040-4/0,03-B SK MI HD

Description:
Residual current circuit-breakers, four-pole, 40 A, 0,03 A, Type B SK, mobile installation, N left, HD

Function:
Type B residual current circuit-breakers are AC-DC sensitive. The SK characteristic limits the risk of unwanted tripping providing maximum system availability, for frequencies ranging from 0 to 150 kHz. With low tripping sensitivity at higher frequencies, our SK circuit-breakers are perfectly suited for use in facilities where preventive fire protection measures are provided by additional means. With our MI RCCBs, your mobile installations are optimally protected. They trip in the event of smooth DC residual currents = 6 mA, thereby ensuring the protective function of upstream residual current circuit-breakers. The HD design makes our RCCBs particularly resistant to harmful environmental influences and therefore suitable for harsh environments.

Properties:
High level of immunity against leakage and residual currents due to operational conditions from frequency 1 kHz and higher, AC/DC sensitive for residual currents with frequencies and mixed frequencies of 0 Hz (smooth direct current) up to 150 kHz, high availability even of voltage-independent detection of smooth DC residual current and AC residual current with frequencies not equal to 50/60 Hz thanks to full functional compatibility with mains voltages from at least 50 V AC on any two active conductors, mains-voltage-independent tripping when type A residual currents occur , compact design for all rated currents, high short-circuit resistance, double-sided two-tier terminals for large conductor cross-section and busbar, switch position indicator, viewing window for labels, multifunction switch toggle with three positions: inchoninch, inchoffinch and inchtrippedinch, Neutral conductor position left

Applications:
Ideally suited for mobile use in power distributors e.g. for rental equipment, where upstream RCCBs of an unknown type are present. Due to the low DC tripping threshold, the AC-DC sensitive RCCB version MI also can be operated downstream of an RCCB Type A or F, Commercial and industrial installations with TT, TN-S and TN-C-S systems, where power electronics equipment is used without galvanic isolation from the mains, e.g. frequency converters, switching power supplies, high-frequency converters, photovoltaic installations and UPS equipment with frequency converters without transformers.