Differential switch SCHNEIDER VIVIENDA SuperInmunized type F - SI, 2 poles, 40 amps, 30 milliamps (2Px40Ax30mA) with 2 modules.

Suitable for the domestic, tertiary and industrial sectors.

This type of Type F differentials are developed in the IEC 62423 standard and its Spanish adaptation UNE-EN 62423 and are capable of protecting against insulation defects that cause smoothed direct current leakage (direct current free of ripple) of up to 10 mA superimposed to the alternating differential current.

These devices also protect the defects detected by type A devices and consequently those detected by type AC.

The superimmunized differentials incorporate high-frequency filters that prevent nuisance tripping in the presence of non-linear loads (electronics), as well as an energy storage circuit against nuisance tripping caused by transient impulses.

Specs:

• Type of product: Differential switch (RCCB) SCHNEIDER HOUSING Superimmunized type F - SI
• Number of poles: 2P
• Rated current [In]: 40A
• Network type: AC
• Ground Leakage Sensitivity: 30mA
• Earth Leakage Protection Delay: Instantaneous
• Earth Leakage Protection Class: Type F
• Making and breaking capacity: Im 500 A conforming to EN/IEC 61008
• Conditional short-circuit current: Inc 6 kA
• Mains frequency: 50/60 Hz
• Rated operational voltage [Ue]: 230 V AC 50/60 Hz
• Residual current tripping technology: Voltage independent
• Rated insulation voltage [Ui]: 440 V
• Withstand voltage peaks [Uimp]: 4 kV
• Surge Current: 250A
• Control Type: Lever
• Local signals: On/off indication
• Mount Type: Adjustable Clip
• Mounting bracket: DIN rail
• 9mm pitches: 4
• Dimensions: Height 81mm - Width 36mm - Depth 73mm
• Mechanical durability: 20,000 cycles
• Electrical durability: 10000 cycles

Resi9 Circuit Breakers by Schneider Electric offer circuit protection against overloads and short circuits. In addition, they are part of the complete Resi9 range that provides advanced protection with solutions adapted to residential needs, both for owners and installers. Resi 9 is a premium range that fits perfectly into any interior.

Resi9 is easy to select and install, and respects the environment. Its components are 100% recyclable and recoverable.

Reference. SCHNEIDER R9R71240

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.