The upper limit of ambient air temperature shall not exceed +40℃, and the lower limit shall not be less than -5℃, and the average temperature for 24 hours shall not exceed +35℃;Note 1: The lower limit is -10℃ or -25℃ working ...
According to the number of poles: unipolar two lines (1P+N), dipole (2P), tripole (3P), tripole four lines (3P+N), quadrupole (4P); Transient trip characteristics: C type (5~10ln), D type (10~16ln). Rated voltage Ue (V) : uni...
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