Surge protection device - TT-ST-M-SFP-24AC

TERMITRAB, spring-cage modular terminal block with integrated surge protection as a filter circuit and disconnect knives, for assembly on NS 35/7.5, voltage UN 24 V DC, terminal width: 6.2 mm, cover width: 2.2 mm

Product Details

IEC test classification C1
Type Double-level terminal block
Product type Interference filters
Surge protection fault message none
Insulation characteristics
Overvoltage category III
Pollution degree 2

Connection method Spring-cage connection
Conductor cross section flexible 0.2 mm² ... 2.5 mm²
Conductor cross section solid 0.2 mm² ... 4 mm²
Conductor cross section AWG 24 ... 12

Dimensional drawing
Width 6.2 mm
Width 6.2 mm
Height 100 mm
Height 100 mm
Depth 65.1 mm (incl. DIN rail 7.5 mm)
Depth 65.1 mm

Color jet black RAL 9005
Flammability rating according to UL 94 V-0
Housing material PA 6.6

Mechanical data
Open side panel Yes

Direction of action Line-Earth Ground
Maximum continuous voltage UC 38 V DC
30 V AC
Rated current 500 mA (55 °C)
Operating effective current IC at UC ≤ 100 µA (per path)
Residual current IPE ≤ 1 mA (per path)
Nominal discharge surge current In (8/20) µs (Core-Earth) 350 A (per path)
700 A (in total)
Total discharge current Itotal (8/20) µs 700 A
Max. discharge current Imax (8/20) µs maximum (line-earth) 1.5 kA (per path)
3 kA (in total)
Nominal pulse current Ian (10/1000) µs (line-earth) 40 A (per path)
80 A (in total)
Output voltage limitation at 1 kV/µs (line-earth) spike ≤ 70 V (per path)
Output voltage limitation at 1 kV/µs (line-earth) static ≤ 70 V (per path)
Residual voltage at In (conductor-ground) ≤ 80 V
Residual voltage with Ian (10/1000) µs (line-earth) ≤ 80 V
Voltage protection level Up (line-earth) ≤ 80 V (C1 - 500 V / 250 A)
Response time tA (line-earth) ≤ 25 ns
Input attenuation aE, asym. typ. 40 dB (1 MHz / 150 Ω)
Cut-off frequency fg (3 dB), asym. (PE) in 50 Ω system typ. 60 kHz
Cut-off frequency fg (3 dB), asym. (PE) in 150 Ω system typ. 20 kHz
Capacity (Core-Earth) typ. 130 nF
Inductivity in series typ. 100 µH
Resistance per path 0.5 Ω
Surge protection fault message none
Max. required back-up fuse 500 mA (T)
Impulse durability (line-earth) C1 - 500 V / 250 A
C3 - 40 A

Ambient conditions
Degree of protection IP20
Ambient temperature (operation) -40 °C ... 85 °C
Altitude ≤ 2000 m (amsl (above mean sea level))

Standards/specifications IEC 61643-21
Standards/specifications EN 61643-21

Mounting type DIN rail: 35 mm

Item number 2858946
Packing unit 10 pc
Minimum order quantity 1 pc
Sales Key CLC
Product Key CLC141
Catalog Page Page 210 (C-4-2019)
GTIN 4017918938161
Weight per Piece (including packing) 30.15 g
Weight per Piece (excluding packing) 27.55 g
Customs tariff number 85363030
Country of origin DE


ECLASS-9.0 27130807
ECLASS-10.0.1 27130807
ECLASS-11.0 27130807


ETIM 8.0 EC000943




Approval ID: EAC-Zulassung


Approval ID: RU C-DE.*09.B.00169

UL Listed

Approval ID: FILE E 138168

China RoHS Environmentally friendly use period: unlimited = EFUP-e
No hazardous substances above threshold values

Your advantages

Effective high-frequency interference attenuation with coils and X˽and˽Y capacitors
Space-saving and cost-saving with a narrow overall width
Disconnection of signal circuits by disconnect knife