Holders of safety locks are intended for installation of safety locks of various types working in chains of direct and alternating current with a frequency of 50-400 Hz with a voltage of 250-600 V and current to 10 A.
System of designations:
the first element - the letter D (holder), can face it a letter M (small-sized);
the second element - a letter P (safety lock) or IF (insert fusible);
the third element - figure - the holder's type;
the fourth element - figure after a hyphen - a standard size;
the fifth element - a letter B - vseklimatichesky execution.