（250A）din-rail type Three phase four wire large current multi-channel output measuring box special junction box
Featured with small volume, large current carrying capacity, high withstanding voltage, reasonable structure, nice appearance, etc., this product has many superior properties such as flame retardant, withstanding high temperature, no water absorption, wetness prevention, perfect insulation, impact resistance, anti aging, etc..
Its cover plate is made of transparent material, assembled and disassembled conveniently, so, it attains the goal of transparence and visualization as well as reliable power utilization.
This product supports metering of various meter-position, after mounting, it not only avoids the problem of weak current, unsafe, inconvenience or other potential accidents caused by service-entrance wire entering into bare copper bar directly, but also cuts down the cost of metering box. It can be divided into single-pole (1P), single-phase (2P), three-phase three-wire (3P), three-phase four-wire (4P) according to the pole number; it can be divided into one-outlet, two-outlet, three-outlet, four-outlet … eighteen-outlet and so on according to the outlet wire condition.
Main technical indexes
1. Insulation voltage: 660V 50HZ(60HZ)
2. Service-entrance conductor current:250A、300A、400A
3. Meter-entrance conductor current(A/section mm2): 60A/16mm2（wire outgoing at each
- Working temp.: -40℃～+160℃
Installation and operation
This series of products provide two installation modes:
One:Fixed type,drill hole in the base plate and install directly,mounting screw is M5.
Two:Rail type,installed on the TH-35 guide rail (top hat rail).
|Main technical parameter|
|Service-entrance conductor current:||250A、300A、400A|
|Meter-entrance conductor current(A/section mm2||60A/16mm2|
|Power frequency withstand voltage:||3,000V/1min|