This breaker can be vertically installed and horizontally installed.

This breaker does not allow reverse in-line, namely only allowing 1, 3, 5 and N connects with the power line, 2, 4, 6 and N connect with the load line.

The breaker is applicable to separation, the symbol is indicated by “＿／＊”.

This breaker product will meet the following standards:
•IEC60947-1 and GB／T14048.1 General Principle
•IEC60947-2 and GBl4048.2 Low-Voltage Breaker
•Appendix B Breaker with residual current protection
•IEC60947-4 and GB14048.4 contactor and electromotor starter 
•EC60947-5.1 and GBl4048.5 mechanical and electric control circuit appliance

Applicable operation environment and installation condition
•The elevation of the installation site is 2000m and lower
•The temperature of the ambient media is not higher than +40℃ and is not lower than -5℃, and its 24-hour mean value does not exceed 35℃(except for the special order)
•The air relative humidity of the installation site does not exceed 50% if the top temperature is +40℃, it is higher under the low temperature, the average lowest temperature of the month with the lowest humidity does not exceed +25℃, the average maximum relative humidity of this month does not 90%, it should be considered that the temperature change will generate the congealing dew on the surface of the product.
•The pollution grade is III
•The installation type of the of the main circuit of the breaker is Ⅲ, the type of the assisted circuit and control circuit which is not connected to the main circuit is II.
•If the media is free from the explosion danger and does not include the air to erode the metal and destroy the insulation and conductive dust.
•The site is free from the rain and snow invasion.
•The beaker should be installed by the operation manual of the product

Note:
•The module without the creepage alarm unit does not include code: the module with the creepage alarming unit under the operation mode 1 is classified as I, the type II is for the operation mode 2.
•Three-pole product does not include code, the four-pole product is divided into A,B,C and D.
•The distribution breaker does not include the code, the breaker for the protection electromotor is classified as II.
•No code is for the direct handle operation, P is for electromotor operation, the Z is for the rotating handle operation.

I. The product pole is divided into three-pole and four-pole, the style of the neutral pole of the four-pole product is divided into four types:
 A type: N pole is not installed by the over-current release part and N pole will switch on all the time and does not close and open with other three poles.
 B type: N pole is not installed by the current release part and N pole will close and open with other three poles (N pole will first close, and then open)
 C type: N pole is installed by the current release part, N pole will close and open with other three poles (N pole will first close, and then open)
 D type: N pole is installed by the current release part, and the N pole will switch on all the time and will not close and open with other three poles.

II.  Divided by the rated current (A):
•DNMlL-100 is divided into 10 levels such as ,16,20,25,32,40,50,63,80 and 100A；
•DNMlL-225 is divided into 7 levels such as 100,125,140,160,180,200 and 225A；
•DNMlL-400 is divided into 5 levels such as 225,250,315,350 and 400A；
•DNMlL-630 is divided into three levels such as 400,500 and 630A [the level with ( ) is not recommended].

III.  It is divided into front board connection, rear board connection and plug connection by the connection mode.
IV.  It is divided into the heat-driven ---electromagnetic (compound) type and electromagnetic (instant) type by the current release type.
V . The breaker is divided into the break with the accessory and the breaker without accessory.

The accessory is divided into the internal accessory and external accessory
The external accessory is divided into the excitation release, under-voltage release, creepage alarm unit module, assisted contact and alarm contact.
The external accessory includes the rotating handle operation structure and electromotor operation structure.