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CTX Contact Time Extender

Part Number Type     Input Voltage Current Input Trip
632A101 CTX-1 48 Vdc -
632A102 CTX-1 125 Vdc -
632A103 CTX-1 24 Vdc -
632B341 CTX-2 125 Vdc 2.0 A
632B342 CTX-2 125 Vdc 1.0 A
632B343 CTX-2 125 Vdc 0.2 A
632B344 CTX-2 48 Vdc 2.0 A
632B345 CTX-2 48 Vdc 1.0 A
632B346 CTX-2 48 Vdc 0.2 A
632B347 CTX-2 24 Vdc 2.0 A
632B348 CTX-2 24 Vdc 0.2A
CTX-3 have Form C contact with delay Form A Output Contact Instantaneous
632B051 CTX-3 125 Vdc 2.0 A
632B052 CTX-3 125 Vdc 1.0 A
632B053 CTX-3 125 Vdc 0.2 A
632B054 CTX-3 48 Vdc 2.0 A
632B361 CTX-2 250 Vdc
632B362 CTX-2 250 Vdc
632B363 CTX-2 250 Vdc
632B365 CTX-2 125 Vdc
Delay: 50-70 msec
632B371 CTX-2 120 Vac
632B372 CTX-2 120 Vac
632B373 CTX-2 120 Vac
Nominal Coil V
632B380 CTX-2V 125 Vdc 125 V
632B381 CTX-2V 125 Vdc 48 V
632B382 CTX-2V 125 Vdc 24 V

CTX Contact Time Extender

The CTX relays supply a 1.5 to 2.5 seconds of contact output time extension for a momentary contact input. The CTX allows slower devices such as SCADA systems and annunciators to operate thus preventing data loss on the action of protective relays/devices or trip indicators such as the E-MAX Trip Indication Relay (TIR).

The CTX-1 is designed for existing installations where the high-speed operation of the auxiliary relays, like the TIR, have been missed due to the short period of time between pick-up and drop-out. The CTX-1 may be easily installed in the field to extend the contact output times.

The CTX-2 is a complete unit containing a fast input sensing relay which triggers the maintained output when the input contact closes. The CTX-2 is also available in an AC input format and a model designed for voltage trips.

The newest addition to the CTX family is the CTX-3. This unit delivers the same 1.5 to 2.5 seconds of output time extension on the form C output contact while the form A output contact is instantaneous. Case dimensions for the CTX-3 are the same as the CTX-2.

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