BB-HESP4DR
DIN Rail Serial Surge Protector, rs485 Data Line, 3 Stage
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FEATURES
•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
Introduction
Model BB-HESP4DR protects against lightning strikes, power surges, and
other types of voltage disturbances with three stages of protection for each
line: a gas discharge tube followed by a series resistor and finally a Transient
Voltage Suppresser (TVS). Five RS-422/485 signals on terminal blocks are
supported with a clamping voltage of 6.8 Volts.
The surge protector is housed in a rugged DIN rail 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 grounding screw and a solid earth ground.
SPECIFICATIONS
SERIAL TECHNOLOGY
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
MECHANICAL
Dimensions: 3.55 x 7.88 x 10.53 cm
Installation: DIN rail mount
Weight: 0.114 kg
MTBF: 862813 hours
MTBF Calc. Method: MIL 217F, Parts Count Reliability Prediction Method
ENVIRONMENTAL
Operating Temperature: -40 to +80 °C
Storage Temperature: -40 to +85 °C
Operating Humidity: 0 to 95%, non-condensing
APPROVALS / DIRECTIVES / STANDARDS
FCC
CE - Directives:
2014/30/EU Electromagnetic Compatibility Directive
2011/65/EU amended by (EU) 2015/863 Reduction of Hazardous Substances Directive
2012/19/EU Waste electrical and electronic equipment (WEEE)
CE - Standards:
EMC:
EN 55032 - Class B Electromagnetic compatibility of multimedia
equipment –
Emission requirements
EN 55024 - Information Technology Equipment – Immunity
Characteristics – Limits and methods of measurement