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 STC-642 Series, Data/Signal Line Surge Protection
The STC-642 Series of Surge Protection Devices are dual pair (four wire) modules using three-stage hybrid technology. This module addresses over voltage transients with gas tubes and silcon avalanche components. In addition, sneak and fault currents are mitigated with resetable fuses (PTCs). The PTCs increase resistance several orders of magnitude when over currents exceed safe levels. A normal state resumes when over currents are removed. The ability to self restore in this manner significantly increases suppressor performance and survivability.
The STC-642 card edge module is gold-plated, double sided and is designed to mate with the STC-642 gold-plated female terminal connector (sold separately). When snapped together, the data circuits pass thru the protector in a serial fashion from the four Field Side terminals to the four Electronics Side terminals. Terminals 1 or 10 of the PCB1B must be attached to building approved ground.
Printable versions of the product manual are available by selecting the pdf file to the left.
- Lightning Protection for Low Voltage Data
- Signal Lines
- Three-Stage Protection
- Sneak/Fault Current Protection
- Resetable Solid-State Fuses-PTCs
- Low Capacitance Option for High Speed Data
- Plug-in Module/Requires PCB1B Base<1 Nanosecond
- Fast Response Time
- UL 497B Listed
- 5 Year Warranty
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- DIN Rail Mounting Clips available for PCB1B. Order model number STC-FM4-DRC
Catalog Number |
Description |
STC-DRS-232 |
Base for all STC-642 models. Designed to accommodate up to 10 AWG wire.
It offers Flat/Phillips screws and can be mounted using 2 #6 size screws. |
STC-DRS-036
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DIN Rail Mounting Clip for STC-PCB1B |
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Description |
STC642-020 |
STC642-036 |
Peak Surge Current (10 Times) |
8x20 s..10kvA
10x70 s 500A per line |
Life Expectancy
|
8x20 s (2000a)..>100 occurances
10x700 s (400A) |
Response Time |
<1ns |
Voltage Clamp |
20 |
36 |
Technology |
SAD Hybrid |
Resistance |
5 (typical) |
Capacitance (Typical) |
Standard Models |
1500pf |
Low Capacitance Models |
50pf |
Operating Temperature |
-40oC to +85oC |
Weight |
2 oz. |
Dimensions
(STC-642 & PCB1B)
H x W x L |
2.05 x 1.0 x 2.4 |
Certifications |
UL 497B |
Warranty |
5 Year |
Ground Terminal 1 or 10 (internally tied together) to building approved ground. The STC-PCB1B accommodates 24 to 10 AWG wire.
The hybrid design of this product includes series resistance. Do not place this product in service on any signal line capable of supplying more than 150 milliamperes continously.
These protectors are intended for indoor use on communication loop circuits which have been isolated from the Public Switch Telephone Network.
The communication loop circuits shall not be exposed to accidental contact with the lectric light or power conductors. The protectors shall be installed per the applicable requirements of the National Electric Code, ANSI/NFPA 70.
Part Numbers by Application
STC642-036 & PCB1B for 4-20 ma Signal
STC642-020 & PCB1B fro RS232
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