Advantech BB-232HESP

These three-stage surge protectors protect 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).
The 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. Two terminal posts and two metal mounting brackets provide a good ground connection.

SPECIFICATIONS

SERIAL TECHNOLOGY
485HESP
Connectors, line	3-position terminal blocks
Connectors, equipment	3-position terminal blocks
232HESP/422HESP
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	Models 422HESP, 485HESP: 6.45 VDC, minimum 7.14 VDC, maximum Model 232HESP: 14.3 VDC, minimum 15.8 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)
APPROVALS / CERTIFICATIONS - 485HESP
	2011/65/EU - Reduction of Hazardous Substance Directive
	2012/19/EU - Waste Electrical and Electronic Equipment (WEEE)

ORDERING INFORMATION

MODEL NUMBER	INTERFACE	LINES PROTECTED	MOUNTING
485HESP	RS-422/485	(3) RS-422/485	Panel Mount
422HESP	RS-422/485	(3) RS-422/485	Panel Mount
232HESP	RS-232	(5) RS-232	Panel Mount