https://www.phoenixcontact.com/us/products/2749987
09/08/2014Page1/6
Surge protection device-BXT-M/RS485-TTL-2749987
Please be informed that the data shown in this PDF Document is generated from our Online Catalog. Please find the complete data in the user's
documentation. Our General Terms of Use for Downloads are valid
(http://phoenixcontact.com/download)
Surface-mounted housing with surge protection, for RS-485 interface with with TTL level, mains connection with
slot for protective plug PRT-S... (without protective plug)
Key commercial data
Packing unit 1 pc
GTIN
Weight per Piece (excluding packing) 312.0 GRM
Custom tariff number 85363010
Country of origin Germany
Technical data
Dimensions
Height 50 mm
Width 100 mm
Depth 100 mm
Ambient conditions
Ambient temperature (operation) -40 °C ... 75 °C
Degree of protection IP54
General
Color gray
Standards for air and creepage distances IEC 60664-1
IEC 61643-1
Mounting type Surface/Wall mounting
Type Housing for surface mounting
https://www.phoenixcontact.com/us/products/2749987
09/08/2014Page2/6
Surge protection device-BXT-M/RS485-TTL-2749987
Technical data
General
Direction of action Line-Line & Line-Signal Ground/Shield & Signal Ground/Shield-Earth
Ground
Protective circuit
IEC test classification B2
C1
C2
C3
D1
Maximum continuous operating voltage UC6.2 V DC
Maximum continuous voltage UC (wire-wire) 6.2 V DC
Maximum continuous voltage UC (wire-ground) 6.2 V DC
Nominal current IN1.5 A (25 °C)
Operating effective current IC at UC≤ 1 µA
Residual current IPE ≤ 5 µA
Nominal discharge current In (8/20) µs (Core-Core) 350 A
Nominal discharge current In (8/20) µs (Core-Earth) 5 kA
Nominal discharge current In (8/20) µs (Core-GND) 350 A
Total surge current (8/20) µs 5 kA
Max. discharge current Imax (8/20) µs maximum (Core-Core) 350 A
Max. discharge current Imax (8/20) µs maximum (Core-Earth) 5 kA
Max. discharge current Imax (8/20) µs maximum (Core-GND) 350 A
Output voltage limitation at 1 kV/µs (Core-Core) spike ≤ 45 V
Output voltage limitation at 1 kV/µs (Core-Earth) spike ≤ 450 V
Output voltage limitation at 1 kV/µs (Core-Core) static ≤ 16 V
Output voltage limitation at 1 kV/µs (Core-Earth) static ≤ 450 V
Voltage protection level UP (Core-Core) ≤ 35 V (C1, 500 V/250 A)
≤ 50 V (C1, 700 V/350 A)
≤ 22 V (C3 - 100 A)
Voltage protection level UP (Core-Earth) ≤ 550 V (B2 - 4 kV/100 A)
≤ 550 V (C2, 4 kV/2 kA)
≤ 600 V (C2, 10 kV/5 kA)
≤ 700 V (C3 - 100 A)
Response time tA (Core-Core) ≤ 500 ns
Response time tA (Core-Earth) ≤ 100 ns
Input attenuation aE, sym. typ. 0.1 dB (≤ 10 MHz/50 Ω)
typ. 0.1 dB (≤ 4 MHz / 150 Ω)
https://www.phoenixcontact.com/us/products/2749987
09/08/2014Page3/6
Surge protection device-BXT-M/RS485-TTL-2749987
Technical data
Protective circuit
typ. 0.1 dB (≤ 1 MHz/600 Ω)
Cut-off frequency fg (3 dB), sym. in 50 Ohm system typ. 100 MHz
Cut-off frequency fg (3 dB), sym. in 150 Ohm system typ. 100 MHz
Cut-off frequency fg (3 dB), sym. in 600 Ohm system typ. 10 MHz
Capacity (Core-Core) typ. 20 pF
Capacity (Core-Earth) typ. 10 pF
Surge carrying capacity in acc. with IEC 61643-21 (Core-Core) B2 (4 kV / 100 A)
C1 (350 A)
C3 - 100 A
Surge carrying capacity in acc. with IEC 61643-21 (Core-Earth) B2 (4 kV / 100 A)
C2 - 10 kV / 5 kA
C3 - 100 A
D1 - 2,5 kA
Connection data
Connection method Screw terminal blocks
Connection type IN Screw terminal blocks
Connection type OUT Screw terminal blocks
Conductor cross section stranded min. 0.14 mm²
Conductor cross section stranded max. 1 mm²
Conductor cross section solid min. 0.14 mm²
Conductor cross section solid max. 1.5 mm²
Conductor cross section AWG/kcmil min. 26
Conductor cross section AWG/kcmil max 16
Standards and Regulations
Standards/regulations IEC 61643-21
Classifications
eCl@ss
eCl@ss 4.0 27140201
eCl@ss 4.1 27130801
eCl@ss 5.0 27130801
eCl@ss 5.1 27130801
eCl@ss 6.0 27130810
eCl@ss 7.0 27130810
eCl@ss 8.0 27130810
https://www.phoenixcontact.com/us/products/2749987
09/08/2014Page4/6
Surge protection device-BXT-M/RS485-TTL-2749987
Classifications
ETIM
ETIM 2.0 EC001473
ETIM 3.0 EC001473
ETIM 4.0 EC000943
ETIM 5.0 EC000943
UNSPSC
UNSPSC 6.01 30212010
UNSPSC 7.0901 39121610
UNSPSC 11 39121610
UNSPSC 12.01 39121610
UNSPSC 13.2 39121620
Approvals
Approvals
Approvals
GOST
Ex Approvals
Approvals submitted
Approval details
GOST
Drawings
