Motor Controller
Description
NJBK5-5 Motor Controller
1.
General NJBK5-5 motor controller (hereinafter referred to as
controller) is mainly used in circuits with a frequency of AC 50Hz/60Hz, a rated operational voltage of up to 220V and a rated control power of up to 2.
2kW (current up to 20A) to control the direct start and stop of single-phase water pumps, provide overload and underload protection (pump runaway protection), and realize automatic liquid level control for civil water towers and reservoirs.
This product is not applicable to the liquid level control of oil, purified water, inflammable and explosive chemical liquids, corrosive liquids and high-density sewage.
Standards: IEC 60947-4-1
2.
Type designation N JBK 5 - □ / □ □
Relay
Protection Relay
Rated control supply voltage
Rated operational current
5: frame size code
Design sequence No.
Motor controller
Company code
3.
Operation conditions 3.
1 Altitude: the altitude of the mounting location should not exceed 2000m; 3.
2 Ambient tempeature: -5℃~+40℃, and the average temperature in 24h should not exceed +35℃； 3.
3 Atmospheric conditions: The relative air humidity at the mounting location should not exceed 50% at the maximum temperature of +40℃.
The relative humidity may be higher at lower temperatures.
Special measures should be taken if condensation occurs on the product occasionally due to temperature variation。 3.
4 Pollution degree: 3; 3.
5 Mounting category: Ⅱ; 3.
6 In places where there is no significant vibration or impact; 3.
7 In non-explosive media that do not contain a sufficient amount of gas or dust to cause metal corrosion or insulation failure; 3.
8 In places where rain and snow protection is provided; 3.
9 The inclination from the vertical plane should not exceed 5°.
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Relay
Protection Relay
4.
Technical data 4.
1 Main data and technical characteristics
Model NJBK5-5
Type
2A~10A 4A~20A
Conventional heating
current (A)
20
Setting current range (A)
Rate power kW HP
2A~10A 4A~20A
0.
25~1.
1 0.
55~2.
2
1/3~1.
5 3/...
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