TELEPHONE
Building Entrance 5-Pin Modules


3B1E & 4B1E Series

Balanced Operation - Heavy Duty with self-Resetting Current Limiters



 

 

Description:

The 3B1E-BAL and 4B1E-PTC/BAL premium series of 5 pin, 3 element protector modules are designed to provide superior transient and power fault protection for most standard telephone line applications. The common chamber, 3 electrode gas tube provides true balanced operation. An over voltage on either side of the circuit enables the entire tube to ionize which provides a simultaneous path to ground for both sides of the circuit. This grounding prevents a second arriving transient on the opposite side to pass through to the equipment. Nominal breakdown voltage for the 3B1E/4B1E series is 350VDC.

Features:

bulletheavy duty surge handling capability 
bulletsuperior common chamber design 
bulletUL and cUL listed 
bulletintegrated test points 
bulletdesigned to meet or exceed Belcore standards 

 

Benefits:

bulletrugged, dependable operation
bulletfewer service calls than the 2 element designs
bulletprevents damage by "lagging" or sneak transients
bulletdocumented safe performance
bulletnon-radioactive
bulletISO9002 certified manufacturer

 

 

ORDERING INFORMATION

Model No. Order No. Pin1 Color
3B1E 75001 Gold Black
3B3E 75002 Gold Red
4B1E 75003 Gold Black
4B3E 75004 Gold Red

SPECIFICATIONS

 
 

  *BIE  

  

  *B1E

  DC Breakdown (nominal)

  

Capacitance

  

 @100V/µsec

350V

1Vrms@1KHZ, 50VDC

<1pf
       

  Impulse Breakdown Voltage

  

  Insulation Resistance

  

 @ 100V/µsec

700A

@50VDC

>100M ohms

@1KV/µsec

150A

    
   

Fail- safe Operation

  

  DC Holdover Voltage

 135V

@1.0 A

<50 sec
 

<150rms

 @5.0 A

<15 sec

  Surge life
(min operations)

  

@20 A

<10 sec

@10A, 10 x 1000 µsec

 >3000

@60 A

<3 sec

@100A, 10 x 1000 µsec

>300

    

10kA, 8 x 20 µsec

10

  Current Limiting (-PTC)4B1E only

  

@20kA, 8 x 20 µsec

1

 Hold current (ma) @20C=

145

 @65Arms, 11 cycles, 130A total

1

 R min/Rmax ohms=

3/6

@10 Arms, 1 sec

10

    

1surge rating is 2x with respect to ground during a simultaneous surge
2service life requirement as per Bellcore TR-NWT-0001361
3pin alloy refers to tip and ring pins. Unless otherwise noted, all ground pins are tin

(These products were previously referred to as CT3B1E and CT4B1E.)

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