Victron SolidSwitch 104

The SolidSwitch will draw 0.04 Ah a month, while a small relay can easily take 10 Ah a month, or typically even 22 Ah. That reduction by a factor of 250 is crucial when using it in a lithium system to connect and control the alternator regulator: the control circuit will always be drawing its standby power. As well as when using it to increase the number of chargers that can be wired to a BMS ATC contact. By using a SolidSwitch rather than an ordinary relay, the parasitic load is reduced to the order of magnitude of the battery bank self discharge.

• The SolidSwitch 104 will switch DC loads of up to 70V/4A and can be controlled by a low power digital signal. 
• The DC load can be resistive, capacitive or inductive (such as the coil of a high-power contactor).
• The SolidSwitch is not reverse polarity protected and not short circuit proof.