AD-BS 1 ST, AD-BS 2 ST, AD-BS 3 ST

Description

The overvoltage protection elements AD-BS1 ST, AD-BS2 ST and AD-BS3 ST have been designed for the protection of low voltage signal lines (e.g. 0/4...20 mA, 0/2...10V etc.). The overvoltage pulses can be caused e.g. by lightning strikes, switching operations in the power grid, inductive interference or static discharges. A special L-type is also available, which has inductors instead of resistors as longitudinal current limitation. This allows the voltage drop at the longitudinal protection to be significantly reduced and the signal to be protected to be less loaded. Due to the plug-in module design, the overvoltage protection elements can be easily replaced after response or during revision. After the protective element has been removed, the signal path is interrupted. Thus, operation without a protective element is not possible.

Application

Protection of technology connected to low voltage signal lines against overvoltage surges.

Specific characteristics

Plug-in module technology
Standard Phoenix plug-in socket

Business data

Order number
AD-BS 1 ST	Grobschutz ohne Längsstrombegrenzung
AD-BS 2 ST	Grob- und Feinschutz mit Längsstrombegrenzung durch Widerstände
AD-BS 2 ST-L	Grob- und Feinschutz mit Längsstrombegrenzung durch Induktivitäten
AD-BS 3 ST	Grob- und Feinschutz mit Querspannungsbegrenzung und Längsstrombegrenzung durch Widerstände
AD-BS 3 ST-L	Grob- und Feinschutz mit Querspannungsbegrenzung und Längsstrombegrenzung durch Induktivitäten
Identifiers
Customs tariff number / country of origin	8536 30 10 / Deutschland

Information

Downloads
Data sheet	en-bs1st_bs2st_bs3st.pdf (286 kB)
Safety instructions	ad-safety-instructions.pdf (43 kB)

Technical specifications

General
Weight	~ 120 g
Mounting type	DIN rail 35mm 35 mm
Ambient temperature	-20 ... 60 °C
Type of protection	IP20
Connection method	Screw clamp
Conductor cross section	2,5 mm² Strand with wire end ferrule / 4 mm² one wire
AD-BS 1 ST
Rated voltage wire to earth	90 V
Output voltage limitation	At 1 kV/ms: < 450 V
Series resistance per wire	0 Ohm
Max rated current per wire	2 A
Rated leakage current per wire	10 kA (8/20 pulse)
Response time	< 100 ns
AD-BS 2 ST
Rated voltage wire to earth	22 V
Protective voltage wire to earth	25 V
Series resistance per wire	22,1 Ohm
Max rated current per wire	100 mA
Rated leakage current per wire	10 kA (8/20 pulse)
Response time	< 0,10 ns
Other protection voltages	33 V, 50 V
Line inductance for L-type	40 uH
AD-BS 3 ST
Rated voltage wire to earth	22 V
Cross-voltage limitation (nominal) Wire against wire	22 V
Protective voltage wire to earth	25 V
Cross-voltage limitation (protection) wire against wire	25 V
Series resistance per wire	22,1 Ohm
Max rated current per wire	100 mA
Rated leakage current per wire	10 kA (8/20 Impuls)
Response time	< 0,1 ns
Other protection voltages	33 V, 50 V
Line inductance for L-type	40 uH

Block and wiring diagram

AD-BS 1 ST, AD-BS 2 ST, AD-BS 3 ST

Dimensions

AD-BS 1 ST, AD-BS 2 ST, AD-BS 3 ST

Circuit examples

AD-BS 1 ST, AD-BS 2 ST, AD-BS 3 ST