Introduction:
Plastic consumer unit, which is suitable for all kinds of residential house, villas, residential areas, etc,which is divided into surface and flush mounting installation.And accord with IEC 60439-3 international standard.The box body and panel are made of flame retardant ABS material. The small circular arc door can open up to 90 degrees.With galvanized din rail and adjustable support,the depth of din rail can be adjusted to install different size MCB and RCD.
The low-voltage Dual Consumer Unit distribution box has the characteristics of strong breaking capacity, good dynamic and thermal stability, flexible electrical scheme and convenient combination. The maintenance of the low-voltage distribution box is once every six months.
The order of maintenance is to carry out overall maintenance first, and then carry out partial maintenance. When there are many distribution boxes, they are usually arranged in two rows, and the two rows are connected through the bus separation switch on the top of the cabinet. In order to reduce the scope of power failure, some maintenance is carried out in the box. First will be part of the load to stop the bus, and then open the bus isolation switch, after inspection without electricity, hang up the earth wire and plaque to start maintenance, check the switch box, and then remove arcing cover, to see if contact damage, tighten bolts into the line and the line, clean the dust from the rack, and test the operating mechanism of the open and closed position, Check whether the bus connector is deformed and has traces of discharge. Tighten the connecting bolt to ensure that the connection is firm. When there is dirt at the busbar joint, clean it and replace the nut with a corrosive agent.
A dual consumer unit is a box of breaker switches installed on the dwelling side of the electric meter. In the US, this device is commonly referred to as a residential breaker box. A consumer unit is intended to serve only one dwelling with two phase wiring. Prior to breaker switches, the box used fuses and was often called a "fuse box."
The electrical circuitry of the home is divided into separate circuits by a consumer unit. Each circuit has its own breaker switch, which is rated according to the carrying capacity of the circuit. If that capacity is exceeded, it causes a breaker switch to flip to the "off" position. Putting a switched circuit back in use requires only flipping it back to "on."
How does household distribution box match reasonably
Air switch referred to as air switch, the household air switch has 1P, 1P+N and 2P, 1P air switch is often used to control the on-off of live wire, need to match the use of zero line row. 1P+N controls the on-off of live line neutral at the same time, but only live line has the function of thermal tripping, while 2P air switch controls the on-off of live line neutral at the same time, both have the function of thermal tripping.
Household leakage is divided into 1P+N and 2P, 1P (single P) +N leakage protection: the switch only controls the on-off of live line, and the zero line is not controlled, so the position marked by N must be connected to the zero line when wiring, and there will be security risks if it is connected incorrectly. There are individual brands of 1P leakage protection switch that can control the on-off of the zero line, but it is not common. 2P (double P) leakage protection: switch controls the on-off of live line and neutral line.
The distribution box Dual Consumer Unit is mainly divided into two parts
One is a complete set of the housing of the distribution box and its related metal accessories.
The second is the electrical components, including switch, relay, breaker, and wiring ect.
The cabinet is houseing the following components: circuit breaker; Leak current protection switch; Dual power automatic switch; Surge protective device; Electricity meter; Ammeter; Voltmeter.
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