The fuses should be installed on the lines of each phase. It is strictly forbidden to install fuses on the neutral line of the two-phase three-wire or three-phase four-wire circuit.
Fuses are mainly used for short-circuit maintenance.
When the fuse is used for blocking purposes, the fuse must be installed at the end of the line.
The function of the fuse is short-circuit maintenance. Block the power supply and overhaul it safely.
The function of the knife switch is to block the power supply and overhaul it safely.
The rubber cover porcelain bottom gate knife switch is generally used as the control switch of the electrical lighting circuit and the electric heating circuit, and can also be used as the power distribution switch of the branch circuit
The three-pole rubber cover knife switch can be used for infrequent starting operation of the motor control switch when the capacity is appropriately reduced.
The power supply inlet of the three-pole rubber cover gate knife switch should be pressed on the inlet seat at the static contact end, and the electrical equipment should be connected to the outlet seat of the fuse below.
When the knife switch is cut off, the handle should be down, and when the situation is turned on, the handle should be up, not upside down or flat,
The function of the three-pole rubber cover knife switch is short-circuit maintenance. Block the power supply and overhaul it safely.
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