Manual

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SPECIFICATIONS
SERIAL TECHNOLOGY
485HESP
Connectors, line 3 position terminal blocks
Connectors, equipment 3 position terminal blocks
422HESP/232HESP
Connectors, line 5 position terminal blocks
Connectors, equipment 5 position terminal blocks
SURGE SUPPRESSION
Clamping Voltage
- stage 1
72 VDC, minimum
108 VDC, maximum
Series Resistance
- stage 2
2.7 Ohms
Clamping Voltage
- stage 3
6.45 VDC, minimum
7.14 VDC, maximum
Clamping Time Less than 5 x10
-9
seconds
Dimensions 11.4 x 8.4 x 4.6 cm (4.5 X 3.3 x 1.8 in)
Installation In-line
Weight 0.19 kg (6.7 oz)
ENVIRONMENTAL
Operating Temperature 0to+70°C(+32to+185°F)
Storage Temperature -40to+85°C(-40to+185°F)
Operating Humidity 0 to 95% Non-Condensing
APPROVALS / CERTIFICATIONS - 485HESP
FCC Part 15, CISPR, EN 55022: 2010 + AC:2011 Class A Emissions
CE
EN 61000-6-1: 2007 Generic Standards for Residential, Commercial and Light-
Industrial Environments
EN 61000-4-5: 2006 Electrical Surges
Download complete Declaration of Conformity at www.bb.elec.com
Three-stage RS-422/485 Surge Protectors
485HESP, 422HESP, 232HESP
These three-stage surge protectors meet IEEE 1000-4-5: 1995 and IEEE
C62.41-1991 recognized standards for premium surge protectors. It
protects against lightning strikes, power surges, and other types of voltage
disturbances with three stages of protection for each supported line: a gas
discharge tube followed by a series resistor and finally a Transient Voltage
Suppresser (TVS). Three RS-422/485 signals on terminal blocks are
supported with a clamping voltage of approximately 6.8 Volts.
These surge protectors housed in a tough metal, panel mount case with a
protected signal ground connection and dedicated chassis ground lug.In
order to work properly, it is important to have a good connection between
the #10 screws and a solid earth ground. The 485HESP provides two
terminal posts and two metal mounting brackets to provide a good ground
connection.
•Threestagesofprotectiononeverydataline
1) Gas discharge tube
2) Series resistor
3) Transient voltage suppressor
•Protectedsignalgroundconnection
•Ruggedterminalblockconnections
•Dedicatedchassisgroundlug
PRODUCT FEATURES
ACCESSORIES
CU15B - Copper Grounding Strap
ORDERING INFORMATION
MODEL
NUMBER
INTERFACE LINES PROTECTED MOUNTING
485HESP RS-422/485 (3) RS-422/485 Panel Mount
422HESP RS-422/485 (5) RS-422/485 Panel Mount
232HESP RS-232 (5) RS-232 Panel Mount
Surge Protection Standards
IEC 1000-4-5: 1995 “Surge Immunity Test” and IEEE C62.41-1991
“IEEE Recommended Practice on Surge Voltages in Low-Voltage AC
Power Circuits” are the recognized standards for surge protection.
B&B Electronics’ heavy duty surge protectors have been tested at 6
kV to meet these two specifications.
Learn more about surge suppression & isolation
www.bb-elec.com/TechLibrary
•“Isolation: Your Best Investment for Reliability”
•“DatalineIsolationTheory”
•“DatalineSurgeProtection”
485HESP, 422HESP, 232HESP_3713ds