Doepke 09124889 DFS4 025-4/0,03-B+ MI 4-pole 25/0,03A residual current circuit breaker all-current sensitive

Residual current circuit breakers (RCCB) switch off the power supply when dangerously high residual currents occur. In this way, they protect people, animals and systems. DFS 4 are two- or four-pole residual current circuit breakers for single- or three-phase networks. In the standard version, the compact devices are four division units wide. They are available with many different residual current types and versions with rated currents of up to 125 A. The large double-deck terminals can also accommodate large conductor cross-sections. The tripped position of the multi-function switch toggle makes troubleshooting easier. The free label software helps with labeling. Type B+ residual current circuit breakers are sensitive to all currents. They protect against pulse and alternating residual currents, residual currents with mixed frequencies and smooth direct residual currents. They detect residual currents of all frequencies up to 20 kHz with a maximum tripping threshold of 420 mA. The switches therefore offer a high level of fire protection. Residual current circuit breakers in MI design (mobile installations) can easily be connected downstream of RCCBs of type A or unknown. They trip in the event of smooth DC residual currents of 6 mA and thus ensure the protective function of upstream residual current circuit breakers. Devices in standard design are designed to monitor circuits with a rated voltage of 230 V/400 V and a rated frequency of 50 Hz. Properties: - tripping threshold of 6 mA for smooth DC residual currents - universal current sensitive for residual currents with frequencies and mixed frequencies from 0 Hz (smooth DC) to 20 kHz, - fire protection according to 0100-420, - meets the requirements of the building regulations 0664-10, 0664-400, ÖVE/ÖNORM E 8601, - electromagnetic compatibility according to VDE 0664-30 and VDE 08396-2 (interference immunity for industrial applications) - mains voltage-independent tripping for type A residual currents, - voltage-dependent detection of smooth DC residual currents and AC residual currents with frequencies 50 Hz, - full functionality with mains voltages from at least 50 V AC on any two active conductors - small size for all rated currents, - high short-circuit strength, - double-sided double-deck terminals for large conductor cross-sections and busbar connections, - switch position indicator, - Viewing window for labeling, - Multifunctional switch toggle with three positions: 'on', 'off', 'tripped', - Also available in 'HD' version - Neutral conductor on the left in the standard version, for four-pole devices type A/AC/F up to 125 A and type B/B+ up to 80 A, N can be optionally available on the right at no extra charge. Mounting type: - Quick fastening on a mounting rail - Any installation position - Feed-in preferably from above Areas of application: - Ideal for mobile use in power distributors, e.g. for rental devices that have RCCBs of an unknown type upstream. Due to the low DC tripping limit, the all-current-sensitive RCCBs of the MI version can also be operated behind RCCBs of type A or F., - Commercial and industrial, as well as mobile installations with TN-S, TT and TN-CS systems in which power electronics equipment is used without galvanic mains isolation, e.g. B. Frequency converters, switching power supplies, high-frequency power converters, photovoltaic and UPS systems with transformerless inverters., - Fire-prone operating premises