TELEPHONE
Building Entrance 5-Pin Modules




CT3B1FS-BAL & CT3B1S-BAL Series

Balanced Operation

CT4B1FS-PTCIBAL & CT4B1S-PTCIBAL Series

Balanced Operation with Self-Resetting Current Limiters

Description:

The CT3B1FS and CT3B1S premium series of 5 pin solid state protector modules are designed to provide superior transient and power fault protection for most standard telephone line applications. The characteristics of the solid state protector are far superior to gas tube technology in speed of response to faults and are virtually immune to overshoot, aging, and repeated tripping within rated limits. The balanced configuration provides the best protection against line to line metallic surges where the transient on one side slightly lags the other. Nominal breakdown voltage for the CT3B1 FS is 240\4 while the CT3B1S is 300V.

The PTC (positive temperature compensated) versions include fast acting, self resetting current limiters. These are especially useful where extra protection against "sneak current" type faults is desirable.

Application:

The CT3B1FS and CT3B1S premium series are well suited to applications with building entrance terminals as well as central office protectors where superior protection is desired. The PTC option is recommended for protection against over current situations where the fault voltage is lower than the break over voltage of the solid state device.

Features Benefits

bulletSolid state technology provides nanosecond
bulletReduced "let through" of dangerous transients response time
bulletLonger lifespan than conventional gas tube and carbon arrestors
bulletReduced service calls
bulletBalanced operation
bulletPrevents damage by "lagging" or sneak transients
bulletUL listed Documented safe performance

ORDERING INFORMATION




SPECIFICATIONS

 
 

  CTCT

  CTCT

  

CT*BIFS

CT*B1S

  DC Breakdown (nominal)

    

Capacitance

    
 @100V/µsec

 240V

300V

1Vrms@1KHZ, 50VDC

<100pf

<100pf
           

  Peak Pulse Current (max)1

    

  Insulation Resistance

    

 @ 8x20 µsec

250A

250A

@50VDC

>100M ohms

>100M ohms
@10x 160 µsec

150A

150A

      

@10 x 1000 µsec

100A

100A

Fail-safe Operation

 

  
     

@1.0 A

<50 sec

<50 sec
  Holding Current

 200(min)

<200(min)

 @5.0 A

<15 sec

<15 sec
     

@20 A

>10 sec

>10 sec

Surge life
(min operations)

    

@60 A

<3 sec

<3 sec

@10A, 10 x 1000 µsec

unlimited

unlimited

      

@100A, 10 x 1000 µsec

>300

>300

  Current
Limiting
(PTC)

    

@1Arms, 1 sec

>60

>60

 Hold Current (ma) @20C

145

 145

@10 Arms, 1 sec

>20

>20

 R min/R max ohms

3/6

3/6

1total surge rating is 2x listed with respect to ground during a simultaneous surge
2service life requirement as per Bellcore TR-NWT-000974
3pin alloy refers to tip and ring pins. Unless otherwise noted, all ground pins are tin


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