Automatic machine AC 25, AK 25-211 4 A (5)
AC25 series circuit breakers with direct manual control are designed to protect electrical installations from overload and short-circuit currents in AC circuits with a voltage of 380 V with a frequency of 50 Hz and direct current with a voltage of 220 V and for protection against short-circuit currents in AC circuits with a voltage of 380 V with a frequency of 400 Hz. The structure of the symbol AC25-XXX-00 OM5: AC - the symbol for the circuit breaker; 25 - serial number of development; X is the number of poles (2, 3); X - type of release (1 - with electromagnetic release and hydraulic retarder; 2 - with electromagnetic release for circuit breakers with a frequency of 400 Hz); X - type of current and frequency (1 - alternating current 50 Hz; 2 - direct current; 3 - alternating current 400 Hz); 00 - the degree of protection of the circuit breaker from environmental influences and from contact with live parts in accordance with GOST 14255-69 (IР20 - switch case, IР00 - clamps for connecting external conductors); ОМ5 - climatic modification and placement category according to GOST 15150-69.
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