Superimmunized class A differential switch (Si) 4 pole, 40 amps, 30 milliamps (4Px40Ax30mA) in 4 modules. Suitable for domestic, commercial and industrial use.
Specifications:
- Built according to the UNE-EN61008-1 standard and RoHS compliance
- Breaking capacity 6 kA (6.000A)
- Rated operational voltage AC 230 V
- Test button "Test"
The differential superinmunizados high fracuencias incorporate filters that prevent unwanted tripping in the presence of non lneales charges (e) and an energy storage circuit against false alarms caused by transients.
A product of CHINT Electric, third international manufacturer of low-voltage electrical equipment with more than 10,000 references and solutions for projects in the domestic, commercial and industrial sector.
Reference. CHINT NL1-4-40-30ASi
How do superimmunized differentials work?
For a differential to jump, the difference between the phase output current and the neutral input current must exceed 30 or 300 milliamps (depending on the differential), which automatically causes the entire electrical circuit to be disconnected. The superimmunized differential manages to avoid these false shots, so that it only jumps when there is a real threat.
As it does? Thanks to the high-frequency filters that it incorporates, the superimmunized differential can distinguish earth faults from a false alarm caused, for example, by lighting with fluorescent tubes. These filters are, in fact, capacitors connected to ground through which permanent leakage currents circulate at 50 hertz, between 0.3 and 1.5 milliamps per device (may vary depending on the type of receiver).
If the sum of permanent leaks reaches 35 percent of the sensitivity of the differential, any small overvoltage -such as that caused by turning on several computers at the same time- can cause a nuisance trip.
For all these reasons, experts recommend installing a superimmunized differential in those installations in which the differential trips too frequently without just cause.
The discount applied to the PVP is -76%
