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Model 552-D6

Pins Protected: 

Pins 2, 3, 4, 5, 6, 7 on the RJ-45 Interface
Pins 1, 2, 3, 4, 5, 6 on the RJ-11 Interface

Clamping Voltage:  

310 Volts in 500 nsec

Surge Capacity:  

1500 Watts for 1 msec; 
250A with an 8/20 µsec pulse

Protection Mode:

Common Mode Pins 2, 3, 4, 5, 6, 7  to 
shielding braid 
Differential Mode Pins 2, 3, 4, 5, 6, 7

Model 552-D8

Pins Protected: 

Pins 1, 2, 3, 4, 5, 6, 7, 8  

Clamping Voltage:  

310 Volts in 500 nsec

Surge Capacity:  

1500 Watts for 1 msec; 
250A with an 8/20 µsec pulse

Protection Mode:

Common Mode Pins 1, 2, 3, 4, 5, 6, 7, 8  to 
shielding braid 
Differential Mode Pins 1, 2, 3, 4, 5, 6, 7, 8

Model 552-T1 and 552-E1

Pins Protected: 

Pins 1, 2, 4, 5

Clamping Voltage:  

62 Volts in 500 nsec

Surge Capacity:  

1500 Watts for 1 msec; 
400A with an 8/20 µsec pulse

Protection Mode:

Common Mode Pins 1, 2, 4, 5  to shielding 
braid 
Differential Mode Pins 1, 2, 4, 5

Model 552--E1 CX

Pins Protected: 

All shields and center pins

Clamping Voltage:  

62 Volts in 500 nsec

Surge Capacity:  

1500 Watts for 1 msec; 
400A with an 8/20 µsec pulse

Protection Mode:

Common Mode Center Pins and Shield to 
shielding braids 
Differential Mode Center Pins to Shields

Model 552-L4 and 552-U

Pins Protected: 

Pins 3, 4, 5, 6

Clamping Voltage:  

62 Volts in 500 nsec

Surge Capacity:  

1500 Watts for 1 msec; 
400A with an 8/20 µsec pulse

Protection Mode:

Common Mode pins 3, 4, 5, 6 to shielding 
braid 
Differential Mode Pins 3, 4 5, and 6

Model 552-L8* and 552-ST

Pins Protected:  

Pins 1, 2, 3, 4, 5, 6, 7, 8

Clamping Voltage:

62 Volts in 500 nsec

Surge Capacity:

1500 Watts for 1 msec 

400 A with an 8/20 µsec pulse

Protection Mode:

Common Mode pins 1, 2, 3, 4, 5, 6, 7, 8 to 
shielding braid 
Differential Mode Pins 1, 2, 3, 4, 5, 6, 7, 8

*NOTE: In addition to protecting leased line modem interfaces, the
Model 552-L8 may also be used to protect DDS, T1, E1, ISDN PRI,
and ISDN BRI “U” and “ST” interfaces.

Copyright © 1997

Patton Electronics Company

All Rights Reserved

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