123PowerSwitch 48V 100A
The 123PowerSwitch is a bidirectional solid state relay for 48V. Thanks to the very low consumption when turned on, the 123PowerSwitch works even when the battery is almost empty. This will ensure that it can operate a very long time.
The 123PowerSwitch is a bidirectional solid state relay. This means that it can be used with devices which both can charge and discharge, like a combined charger/inverter.
The 123PowerSwitch is intended for 48V and can handle 100A continuously without any problems, even 200A peak for up to one minute.
The second advantage is the very low power consumption of the 123PowerSwitch, which is even less than 1 milliamp when turned on. The 123PowerSwitch works even when the battery is almost empty. This will ensure that it can operate a very long time.
The status LED provides information about the operation of the 123PowerSwitch.
-When the LED is not flashing: the 123PowerSwitch does not get any power from the two control wires. In that case, the relay does not conduct (open state).
-When the LED flashes 1x per 5 seconds: the relay conducts (closed state).
-When the LED flashes fast several times and after this no flashing for 5 seconds: the relay is too warm and it will not conduct (open state). Once it has cooled down, operation will restart.
Up to three 123PowerSwitch units can be connected in parallel to increase the current switching.
Make all cables to the 123PowerSwitch units the same length to distribute the total current evenly over the units and add a fuse (max. 125A) for every 123PowerSwitch.
Wiring examples with the 123/SmartBMS
Example with a combined charger/inverter:
Example with separate charger and a separate inverter:
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