4.1.1 额定电流（阻性）  Rated Current: 3A, 6A, 10A (resistive)
4.1.2 绝缘电阻  Insulation Resistance
用DC500V绝缘电阻表加额定电压DC500V测定大于100MW。
With a DC 500V megger, borne DC 500V, the tested value is over 100 MW.
4.1.3 电气强度（水中）  Dielectric Strength (in water)
在水中，温控器的导线端子与塑料套之间能承受接近正弦波的1500V 50Hz交流电压历时一分钟的耐压试验，不击穿，无闪络。
In water, parts between the terminals and airproof wrap can bear 1500V 50Hz AC current, which is nearly sine wave, for one minute as bearing test. Resulted no breakdown, no flashover.
4.1.4 耐寒温度  Cold-resistant Temperature:  -40°C
4.1.5 温度特性类型  Class of Temperature Characteristics
常闭、常开  Normal close, normal open
 
4.1.6 最高动作温度及耐热温度  Max. OT and Tmax
 KSD303-A KSD303-B KSD303-C KSD303-D
最高动作温度
Max. OT 20°C 20°C 20°C 50°C
耐热温度
Tmax 60°C 60°C 60°C 90°C
4.1.7 最小温差 Min. diff:  8°C
4.1.8 产品温度精度（公差） Tolerance of Temperature
4.1.8.1 OFF
一般的精度
Common tolerance 较高的精度
Preferable tolerance 极限的精度
Limit of the tolerance
±3°C ±2.5°C ±2°C
 4.1.8.2 ON
一般的精度
Common tolerance 较高的精度
Preferable tolerance 极限的精度
Limit of the tolerance
±6°C ±5°C ±4°C

4.1.9 引线及端子  Lead wires and Terminals
根据客户要求。
According to the client’s request.

¿ 温控器采用接触感温时，应使封盖的一面贴紧被控器具的安装部位；

In the event that the thermostat is employing contact temperature sensing, its cover shall be adhered to the installation position of a controlled appliance.

¿ 不可把封盖顶部压塌或使其变形，以免动作温度变值或影响其他性能；

       The cover shall show no cave-in or deformation resulting in operating temperature variation or bad influence on other performances.

¿ 工作部件必须避免受到过大的力以防止出现壳体开裂、端子变形、导线脱落等现象；

       No excessive force shall be applied to working parts, to prevent them from defects such as cracking base, distorted terminal and wire lead coming off.

¿ 在安装使用过程中，不能把塑封套弄破。

       The plastic envelope must be kept intact in the course of installation and usage.