Automatic three-phase circuit breakers AE20

Notation conventions structure:

AE20 XXX-XXX-XXXZX:

AE - automatic circuit breaker;

20 - design number;

X - circuit breaker size, depending on the rated current:
   2 - 16 A;
   4 - 63 A;
   5 - 100 A;
   6 - 160 A;

X - number of poles combined with maximum-current release devices:
   3 - triple pole with electromagnetic maximum-current release devices;
   4 - single pole with electromagnetic and thermal maximum-current release devices;
   6 - triple pole with electromagnetic and thermal maximum-current release devices;

X - M letter presence - for circuit breakers modernized for the rated currents 63 and 100 A;

X - availability of free contacts:
   1 - no free contacts;
   2 - one free front contact;
   3 - one free back contact;
   4 - one free front contact and one free back contact;

X - auxiliary release devices:
   0 - no auxiliary release devices;
   2 - independent release device;

X - thermal compensation and adjustment of the thermal release device's rated current:
   R - adjustment of the thermal release device's rated current and thermal compensation;
   N - adjustment of the thermal release device's rated current without thermal compensation;
B - no adjustment of the thermal release device's rated current and thermal compensation for distribution points (with smaller overall dimensions);
   O - no adjustment of the thermal release device's rated current and thermal compensation;

XX - protection rate:
   00 - IP00;
   20 - IP20;
   54 - IP54 (for AE20M family circuit breakers);

HZ - climatic construction (U, T and placement category according to GOST 15150-69);

X - wear-resistance class (A - first class; B - second class).