TELEPHONE - GAS STATION PROTECTOR MODULES


TII 126 HEAVY DUTY TWO-ELECTRODE

TOTEL FAlLSAFE® TFS® STATION PROTECTOR MODULE

TII TOTEL FAILSAFE® TFS® protector modules are the basic components of TII station protectors. They are designed with complete subscriber and telco protection in mind. A feature of this completely self-contained unit is having the wire terminals as an integral part of the protector modules. Thus, when a module has reached its "End of Life" condition, it must be removed and replaced in order for the subscriber service to be restored. In other words, when a subscriber station is visited, it is not possible to unintentionally leave the subscriber connected to the network and unprotected.

A TII TFS® module is also special in its internal construction. The TII 126 ( ) TFS® Station Protector Module consists of two Heavy Duty 2-electrode TII 44 Tubes, a failshort mechanism in case of a power cross condition, a backup airgap to protect a vented gas tube, and an epoxy filled shell with two #10 wiring studs and a ground strap. The encapsulation of the internal components of the module safeguards against contamination and corrosion of the protection elements, a feature not found in screw-in type station protectors. The Heavy Duty 44 tube provides an extra level of protection in both life and current handling capacity beyond that of most 2-electrode tubes in common usage today. The TII 126 ( ) Protector Module shell is colored black to indicate its Heavy Duty rating.

The TII 126( ) 2-Electrode Protector Module may be employed in a variety of single and multiple pair protector assemblies. When mounted in TII station protectors or network interface (NID) enclosures, the assembly is UL listed in the Signal Circuit Protector category. The TII housings carry the UL logo and identification number. The TII 126( ) Protector Module is also UL listed as a stand-alone one or two-pair indoor station protector when it is mounted on a TII B1 Mounting Adapter. The TII 126( ) module may also be UL listed in other manufacturers' NID enclosures.

SPECIFICATIONS

 

126L

126M
DC Breakdown 265-600 volts 300-500 volts
Impulse Breakdown Voltage:
@100V/µs
@10KV/µs
750V Max-500V Typical
1200V Max - 800V Typical
750V Max - 500V Typical
1200V Max - 800V Typical
Insulation Resistance
@ 100V dc		 >100 Megohms >1000 Megohms
Impulse Life:
100A, 10/1000µs waveform
either polarity
300A, 10/1000µs waveform
either polarity
500A, 10/1000 µs waveform
either polarity		 100 Surges Minimum

50 Surges Minimum		 400 Surges Minimum

600 Surges Typical
Short Duration AC Life:
1000VAC, 10A, 1 sec
1000VAC, 1A, 1 sec
5 Operations Minimum
60 Operations Minimum		  
AC Discharge Current
11 Cycles, 60Hz:		   65A
Minimum Single Impulse
Discharge Current, 8/20µs
waveform		   10kA
DC Holdover   150V minimum @200mA
Test Method TA-TSY-00070
(Bellcore Std.)		 IEEE C62.31 1987
REA-PE 80

Note: The same tube is used in both the 126L and 26M. The above shows results by test method.

Please see Gas Tube Chart for electrical specifications of TII 44 gas tube.

Dimensions: 0.8" x 1 1" x 1 .45'
Weight: 1.25 oz
Standard Package: 100 pieces


MODEL DESCRIPTION
TII 126( ) - Two Electrode, Heavy Duty
Protector Module

TII 126( )B1 - One 126 ( ) Protector
Module with One B1 Mounting Adapter

TII 126( )B2 - Two 126( ) Protector
Modules with One B1 Mounting Adapter

Please insert letter L or M in place of ( )
* L designates a protector module meeting
specific Bell System requirements.
* M designates a protector module meeting
the REA, PEG and other industry requirements.


UL LISTED CSA CERTIFIED


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