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