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5531SA8A.7.48
New Tii (Tii Technologies Inc.) Totel Failsafe® TFS Station Protector Modules for Telephone Lines, Gas Tube Surge Protectors with Failshort and Airgap Backup Protection for Telecom Equipment, etc., Part Number 355M. Each offer quantity is for a Factory Box of Fifty (50) Protector Modules with Brass Hardware. You may offer / buy any number of boxes, up to the total quantity available above.
These were purchased at an electronics supplier liquidation last year, and they are brand new in the original factory boxes. Listed to UL 497 in the Signal Circuit Protector category when mounted in a Tii Station Protector or Network Interface Device (NID). Comes with solid brass nuts and flat washers on the threaded brass terminals, as shown.
We have these listed individually if you are needing a smaller quantity.
According to the calipers:
Overall length: 2.250\" / 57.15 MM
Width (excluding flat brass terminal): .750\" / 19.06 MM
Width (including flat brass terminal): 1.194\" / 30.33 MM
Height (excluding threaded terminals): .849\" / 21.57 MM
Height (including threaded terminals): 1.436\" / 36.48 MM
Threads: #10-32 x .519\" / 13.20 MM (diameter - threads per inch x grip length)
According to the manufacturer:
355M
Maximum Duty Totel Failsafe® TFS® Station Protector Module
Tii’s Totel Failsafe® Station Protector Modules are the basic components of Tii Station Protectors, and the 355M Maximum Duty Protector provides years of reliable protection against power surges and the damage they can cause.
Three-Electrode Maximum Duty Gas Tube
Fully Encapsulated Assembly Provides Years of Superior Performance
Reduced Maintenance Cost
Listed to UL 497
KEY PRODUCT BENEFITS
-- 355M module is entirely self-contained and consists of a Maximum Dutythree-electrode gas tube surge arrester, a failshort mechanism, and a backupairgap
-- Entire assembly is completely encapsulated to prevent moisture entry andenvironmental contamination
-- Comes with a corrosion-resistant ground strap and two threaded bindingposts for service wire and station wire connection
Surge protection is provided in three ways:
1. The gas tube operates on over-voltage surges and shunts the transient toground
2. The failshort device operates under power cross conditions to permanentlyground the line
3. The backup airgap provides surge protection in the unlikely event shouldthe gas tube arrester vent
-- 355M module may be employed in a variety of single and multiple pairprotector and network interface device assemblies
-- Gas tube recovers after a surge and remains ready for continued normaloperation for many years, reducing maintenance cost over the life of aninstallation
INDUSTRY STANDARDS
-- Listed to UL 497 in the Signal Circuit Protector category when mounted in aTii Station Protector or Network Interface Device (NID)
-- 355M module is accepted as Maximum Duty by RUS when tested to therequirements of PE-80
specifications
DC Breakdown Voltage 300 - 500V DC
DC Holdover: 150V DC @200 mA <150mS
Maximum Single Impulse Discharge Current, 8/20 waveform 40kA, 20kA/Side Simultaneously
Service Life: 1000A, 10/1000 Waveshape at 1 min. intervals each 1000 Surges Minimum Polarity 500A On Each Side to Ground Simultaneously
AC Discharge Current 11 cycles, 60Hz 130A rms, 65A On Each Side to Ground Simultaneously
Capacitance: Line to Ground Test Method IEEE 465.1, RUS PE-80 <30pF
Impulse Breakdown Voltage @100V/μsec 750V Maximum, 500V Typical
Insulation Resistance @ 100V dc 1000 Megohms Minimum
Airgap Breakdown Voltage Meets Requirements of UL 497
355M* Maximum Duty Totel Failsafe® TFS® Station Protector Module
*M designates a protector module meeting the RUS, PEG and other industry requirements. Patent No. 4,212,047
