DZL18-20 series residual current circuit breakerDetailed product description：

1、 Scope of application
The DZL18-20 series residual current circuit breaker (hereinafter referred to as residual current circuit breaker) is suitable for use in AC 50Hz, rated working voltage 220V, rated current of 32A and below line circuits, for indirect contact protection of people, as well as overcurrent protection of buildings and similar use lines. It can also provide protection against fires caused by grounding faults that persist due to the malfunction of overcurrent protection devices. Leakage circuit breakers with overvoltage protection can also provide protection against high voltage caused by power grid faults.  

2、 Model and its meaning

3、 Normal working conditions and installation conditions
1. The upper limit of the surrounding air temperature shall not exceed+40 ℃, the lower limit shall not be lower than -5 ℃, and the average temperature value over 24 hours shall not exceed+35 ℃;  
Note 1: For working conditions with a lower limit of -10 ℃ or -25 ℃, users must declare it to the manufacturer when placing an order;  
Note 2: For working conditions where the upper limit value exceeds+40 ℃ or the lower limit value is below -25 ℃, the user should consult with the manufacturer.  
2. The altitude of the installation site shall not exceed 2000m
3. The relative humidity of the atmosphere should not exceed 50% when the ambient air temperature is+40 ℃. Higher relative humidity is allowed at lower temperatures, such as reaching 90% at+20 ℃. Appropriate measures should be taken for occasional condensation caused by temperature changes;  
4. Pollution level: Level 3;  
5. Installation category: Class II and Class III.  
6. The external magnetic field of the installation site should not exceed 5 times the geomagnetic field in any direction;  
7. Generally installed vertically, with the handle facing upwards as the power on position, and a tolerance of 2 ° in any direction;  
8. The installation site should have no significant impact or vibration.  
4、 Structural features
The DZL18-20 series residual current circuit breaker is mainly composed of zero sequence current transformers, electronic component boards, residual current release devices, operating mechanisms, and plastic casings.

5、 Main technical parameters

model	DZLl8-32(F)/1	DZLl8-32/2	DZLl8-32(F)/3	DZLl8-32/4
Rated voltage UnV	AC220、10、16、20、32
Rated current InmA	20. 32	10. 16, 20, 332	20. 32
Polar number P	two
Rated residual operating current l △ nmA	30, 15, 10
Rated leakage non operating current l △ nomA	15. 7.5, 6
Overvoltage action value V			280±5%
Rated residual connection and disconnection capacity I △ mA	three thousand
Rated short-circuit breaking capacity in mA	five hundred

6、 Appearance and installation dimensions

7、 Ordering Notice
When placing an order, it is necessary to specify the product name, model, and specifications; Rated residual operating current; Is it equipped with overvoltage and overload protection; Rated current and quantity, etc.  
Example: Order DZL18-20, rated residual operating current 30mA, rated current 20A, with overload and overvoltage protection, quantity 20 units.  
It should be written as: DZL18-20/4 30mA 20A 20 units.