RESISTANCE

SV500ms/65 NTC NUSSBAUM

  • Code: MT-11980
3.50 EUR



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SV-type switching delays are based on temperature-dependent semiconductor resistors with NTC characteristics. They easily solve the task of delaying a shift or splitting two shifts in time. Due to their light weight and small size, they can be placed directly on the contact terminals.

The SV-type switching delay device is connected in series to the collector coil of the contactor. After switching on the control voltage, initially only a small current flows, which is limited by the high cold resistance of the retarder. This resistance is reduced by self-heating until the coil energizes and the contactor lifts. In order for the switching delay to cool down again, it must be bridged with a free contact and thus disabled.
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