NJBK5-5

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-expl...