GE Industrial Solutions GERAPID 2508, 4008, 5008, 6008 WITH ARC CHUTE 1X2 - Manual (Page 18)

18 Design and specifications are subject to change without notice S47183De rev.02 2011-03-14
4.3.3 NEKO control circuit
 Firing signal at (-X2 :10/:11) is processed by opto-coupler. Pay attention to the polarity!
 Closing STOP signal is provided to lock CLOSE command, until capacitors are fully charged.
 Be sure that voltage level is between DC 6 V - 24 V and there are no transient spikes (<3 ms) on firing signal. This
can lead to major defect of the NEKO control unit!

Maximum duration of the firing command must not exceed ~1 sec. Longer signal might cause NEKO failure! It is
recommended to use one of HS auxiliary contacts connected in series with firing circuit (-X2 :10). It will
automatically cut off the firing circuit after breaker opening.
Fig. 25 ED coil with internal NEKO control unit