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Automatic three-phase circuit breakers
 
Low-voltage equipment

Automatic circuit breakers

Single-phase
  • AE1031
  • AE2044
  • A63M

    Two-phase
  • AP50B-2MT

    Three-phase
  • A3716, A3726
  • A3790
  • AE20
  • VA51, VA52
  • VA57f35
  • AP50B-3MT

    For DIN devices
  • VA6026
  • IEK VA4729

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  • KT60

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  • KE

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  • PPN
  • PN2
  • Home > Electrical Equipment > Low-voltage equipment

    Automatic three-phase circuit breakers A3716, A3726


    | Drawings


    A 3716 and A 3726 are automatic circuit breakers designed for conducting current under normal conditions and for cutting it off if a short or overloaded electrical circuit happens. In addition, it can be used for infrequent on and off switching of electric circuits.
    A 3716 (F) and A 3726 N (F) are triple-pole, current-limiting switches with electromagnetic and thermal release devices.
    A 3716 B and A 3726 B are also triple-pole, current-limiting switches with electromagnetic and thermal release devices.
    A 3714 B (S) and A 3724 B (S) are triple-pole, current-limiting switches with semiconductor and thermal release devices.
    S stands for selective switch (i.e. with time lag in short circuit zone).
    Levels of environmental exposure protection and protection from contact with current-carrying parts:
    IP30 - the circuit breaker
    IP-00 - external conductor terminals.

      Design:

    • the circuit breakers can have either a stationary or a drawout construction and can be either electromagnetically or manually operated. If necessary, the following supplemental assemblies can be built in: independent release device, zero release device, free contacts.


    • Weight:


    • A 3716 - 6 ¸ 8.5 kg
    • A 3726 - 8.0 ¸ 10.5 kg

    Circuit breaker
    type
    Current type Rated voltage, V Rated current, A Response current setting, A Maximum
    permissible
    short-circuit
    current
    electromagnetic
    release
    thermal
    release
    electromagnetic
    release
    thermal
    release
    A3716B AC 50 Hz 660/380 160 16÷160 630; 1600 18÷185 5.0÷75
    A3726N(F) AC 50 Hz 660/380 160 16÷160 630; 1600 18÷185 5.5÷25
    A3726B AC 50 Hz 660/380 250 160÷250 2500 185÷290 40÷75
    A3726N(F) AC 50 Hz 660/380 250 160÷250 2500 185÷290 35


     
             
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