The MCB detects the excess current flow and immediately breaks the circuit. This can be seen as tripping action of the MCB knob. Previously, this job was done by fuse. These days MCB is more commonly used in low voltage electrical network than fuse. MCB has several advantages over fuse: MCB is more sensitive to current than fuse. It detects any abnormality in the current flow and automatically switches off the electrical circuit. In case of MCB, the faulty zone of electrical circuit can be easily identified.
The Seder Plate usually contains two places for Maror (bitter herbs) which represent the bitterness of slavery. The two places are called Maror and Chazeret. Only certain specific herbs are acceptable for maror, and the most commonly used vegetables are romaine lettuce and horseradish.
There are two relays in the flasher unit. I call them the master and the secondary relays. Here is a functional schematic of the flasher unit. When the turn signal is activated with the right hand side thumb switch the transistorized timer circuit in the flasher applies a pulsating signal to the master relay coil. This sends a current through the secondary relay coil as well as lighting up the signal lights on the motorcycle.