KRDB SERIES Time Delay Relays

PublishTime：2021-08-17

● The KRDB Series is a compact time delay relay measuring only 2 in. (50.8 mm) square. Its microcontroller timing circuit provides excellent repeat accuracy and stability. Encapsulation protects against shock, vibration, and humidity. The KRDB Series is a cost effective approach for OEM applications that require small size, isolation, reliability, and long life.
● Operation (Delay-on-Break):
■ Input voltage must be applied before and during timing. Upon closure of the initiate switch, the output relay energizes. The time delay begins when the initiate switch is opened. The output remains energized during timing. At the end of the time delay, the output de-energizes. The output will energize if the initiate switch is closed when input voltage is applied.
■ Reset: Reclosing the initiate switch during timing resets the time delay. Loss of input voltage resets the time delay and output.

Brand of Product：	Littelfuse
Part#：	KRDB SERIES 、 KRDB 、 KRDB110.1S 、 KRDB112.5S 、 KRDB1120M 、 KRDB115M 、 KRDB120 、 KRDB124 、 KRDB21180S 、 KRDB217S 、 KRDB31120S 、 KRDB415S 、 KRDB4160S 、 KRDB420 、 KRDB421 、 KRDB422 、 KRDB423 、 KRDB424 More Part#
Product Category：	Time Delay Relays 、 compact time delay relay More
Application：	[ OEM ] More
Data Type：	Datasheet More
Safety & Environment Standards：	More
Operating Temperature：	Please see the document for details
Qualification Grade：	More
Qualification Approval：	More
Package：
Language：	English Chinese Chinese and English Japanese
Date of Creation：	062216
Version Number：	Rev: 1-A-062216
Data Encoding：
Data Size：	643 KB

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