Resistive load current ratings
对于标有阻性负载电流的开关

1. The resistive load current rating is established using a substantially resistive load with a power factor not less than 0,95.
阻性负载的功率因子不能小于0.95

2. Switches with resistive load rating may be used to control a motor load provided . the power  factor  is  not  less  than  0,8  and  the  motor  load  current  does  not  exceed 60 % of the resistive load current rating of the switch and the inrush current value does not exceed the resistive load value, or
阻性负载的开关可以用于马达类负载1.如果功率因子不小于0.8,负载电流不超过60%的阻性标称值且冲击电流不大于其阻性电流.
. the power  factor  is  not  less  than  0,6  and  the  motor  load  current  does  not  exceed 16 % of the resistive load current rating of the switch.2.
如果功率因子不小于0.6,负载电流不超过16%的阻性标称值.

3. Switches  with  resistive  load  rating  may  be  used  to  control  a  tungsten  filament  lamp load,  provided  the  steady-state  current  of  the  tungsten  filament  lamp  load  does  not  exceed 10 % of the resistive load current rating of the switch.
阻性负载开关可用于钨丝灯负载,如果钨丝灯负载的稳定电流不超过10%的开关的负载标称.

Resistive and motor load ratings
对于标有阻性负载电流和马达类负载电流的开关

1. Switches having both resistive and motor load ratings are not suitable for switching a combined load of the full resistive load plus the full motor load. Such switches can be used for switching a combined resistive load plus a motor load, providing the vector sum of the resistive current and six  times  the steady-state motor  current  does  not  exceed  either  the  resistive  current rating or six times the motor current rating, whichever is greater, and depending upon the power factor of the combined load. The vector sum of the resistive current and the steady-state current of the motor shall not exceed the resistive current rating.
既可用于阻性负载也可用于马达类负载的开关,不能同时满载(阻性+马达类).此开关可以使用,如果阻性负载与6倍马达电流的向量和不超过额定的阻性负载或6倍的额定马达负载(取大值).阻性负载与马达电流的向量和不能超过额定的阻性负载.

NOTE   An example is a switch in which the same set of contacts is used to control a circuit in a fan heater which incorporates both a heating element and a motor.
如FAN HEATER上使用的开关,就是上述情况.

2. Switches  having  both  resistive  and  motor  load  ratings  may  be  used  for  tungsten filament  lamp  loads,  provided  that  the  steady-state  lamp  load  current  does  not  exceed  either 10 % of the resistive current