B&B Electronics HESP4DR プリント

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three-stage Din rail Surge protector
HESP4DR
Model HESP4DR meets 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).  Five RS-232 signals on terminal blocks are supported with a 
clamping voltage of 6.8 Volts. 
The HESP4DR is housed in a sturdy DIN rail mount case with a #10 
grounding screw. In order to work properly, it is important to have a good 
connection between the #10 screw and a solid earth ground.
•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
• Wide operating Temperature
• NEMA TS2
proDuCt FeatureS
aCCeSSorieS
CU15B - Copper Grounding Strap
orDering inFormation
Model 
nuMber
interFaCe
lines ProteCted
Mounting
HESP4DR
RS-422/485
(5) RS-422/485
DIN Rail 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”
Parking Lot Security
Industry: Transportation – Intelligent
Parking
Product: High Energy Surge Protector
www.bb-elec.com/
Parking
HESP4DR
Carrier data charges 
may apply.
in the FieLD
HESP4DR_3713ds