TELEPHONE
Building Entrance 5Pin Modules
CT3B1S/HD
Asymmetrical Operation
Description:
The CT3BS/HD "Heavy Duty" series of 5 pin solid state protector modules are designed to provide "Heavy Duty" transient and power fault protection for most standard telephone line applications. A specially designed semiconductor substrate
offers substantially higher surge current handling capability and meets the requirements of Bellcore TR-NWT-001089, "First and Second Level Lightning Surge Test." 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. Nominal breakdown voltage for the CT3B1S/HD is 300V.
Where extra protection against over current or "sneak current" conditions is desired, PTC or "self resetting" polymer fused versions are available.
Application:
The CT3B1S/HD "Heavy Duty Series" are well suited to applications with building entrance terminals as well as central office protectors where extra current handling capability might be required due to higher exposure conditions.
Features & Benefits
| Solid state technology provides nanosecond response time
| Meets Bellcore First and Second Level Surge Test TR-NWT-001089
| Longer lifespan than conventional gas tube and carbon arrestors
| External failsafe mechanism which permanently grounds module under sustained high current conditions
| Reduced "let through" of dangerous transients
| Optimum protection for higher exposure locations
| Reduced service calls
| Safe mode operation in adverse situations
| UL listed Documented safe performance
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SPECIFICATIONS
|
CT3BIS/HD |
|
CT3B1S/HD |
DC Breakdown (nominal) |
|
Capacitance |
|
@100V/µsec |
300V |
1Vrms@1KHZ, 50VDC |
<100pf |
|
|
|
|
Peak Pulse Current (max)11 |
|
Insulation Resistance |
|
@ 10 x 1000 µsec (1000V) |
250A |
@50VDC |
>100M ohms |
@2 x 10 µsec (2500V) |
500 |
|
|
@2 x 10 µsec (5000V) |
500A |
Fail-safe
Operation |
|
|
|
@1.0 A |
<50 sec |
Holding
Current |
<200(min) |
@5.0 A |
<15 sec |
|
|
@20 A |
>10 sec |
Surge life
(min operations)2 |
|
@60 A |
<3 sec |
@10A, 10 x 1000 µsec |
unlimited |
|
|
@100A, 10 x 1000 µsec |
>300 |
|
|
@1Arms, 1 sec |
>60 |
|
|
@10 Arms, 1 sec |
>20 |
|
|
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
comm-omni@comm-omni.com
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