Additional pole
There are four types of additional poles:
PS: Synchronous closure of the breaker pole
PD: Pre-closed of the breaker pole
PN: Unswitched neutral pole
PE: Ground electrode pole
The above additional poles can be added to the main switch (a 3-pole main switch can only add a maximum of two additional poles) to form different products and achieve different functions.

Naming rule

Technical specification

Dimension figure

                            A-16~40-PS/PD/PN/PE                                                                       AR-16~40-PS/PD/PN/PE

                            B-63~100-PS/PD/PN/PE                                                                       BR-63~100-PS/PD/PN/PE

                                  C-100~125-PS/PD/PN/PE                                                                    CR-100~125-PS/PD/PN/PE