3211771 – Phoenix Contact

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PT 4-TWIN Feed-Through Terminal Block “Phoenix Contact”

32 11 77 1
nom. voltage: 800 V, nominal current: 32 A, number of connections: 3, connection method: Push-in connection, Rated cross section: 4 mm2, cross section: 0.2 mm2 – 6 mm2, mounting type: NS 35/7,5, NS 35/15, color: gray
Product type Multi-conductor terminal block
Area of application Railway industry
Number of connections 3
Number of rows 1
Potentials 1
Insulation characteristics
Overvoltage category III
Degree of pollution 3
Rated surge voltage 8 kV
Maximum power dissipation for nominal condition 1.02 W
Number of connections per level 3
Nominal cross section 4 mm²
Stripping length 10 mm … 12 mm
Internal cylindrical gage A4
Connection in acc. with standard IEC 60947-7-1
Conductor cross section rigid 0.2 mm² … 6 mm²
Cross section AWG 24 … 10 (converted acc. to IEC)
Conductor cross section flexible 0.2 mm² … 6 mm²
Conductor cross section, flexible [AWG] 24 … 10 (converted acc. to IEC)
Conductor cross-section flexible (ferrule without plastic sleeve) 0.25 mm² … 4 mm²
Flexible conductor cross section (ferrule with plastic sleeve) 0.25 mm² … 4 mm²
2 conductors with the same cross section, flexible, with TWIN ferrule with plastic sleeve 0.5 mm² … 1 mm²
Nominal current 32 A
Maximum load current 36 A (with 6 mm² conductor cross section, rigid)
Nominal voltage 800 V
Nominal cross section 4 mm²
Connection cross sections directly pluggable
Conductor cross section rigid 0.5 mm² … 6 mm²
Conductor cross-section flexible (ferrule without plastic sleeve) 0.75 mm² … 4 mm²
Flexible conductor cross section (ferrule with plastic sleeve) 0.5 mm² … 4 mm²
Rated data (ATEX/IECEx)
Identification ? II 2 G Ex eb IIC Gb
Operating temperature range -60 °C … 110 °C
Ex-certified accessories 3208977 D-PT 4-TWIN
3030789 ATP-ST-TWIN
1204517 SZF 1-0,6X3,5
3022276 CLIPFIX 35-5
3022218 CLIPFIX 35
List of bridges Plug-in bridge / FBS 2-6 / 3030336
Plug-in bridge / FBS 3-6 / 3030242
Plug-in bridge / FBS 4-6 / 3030255
Plug-in bridge / FBS 5-6 / 3030349
Plug-in bridge / FBS 10-6 / 3030271
Plug-in bridge / FBS 20-6 / 3030365
Bridge data 25 A / 4 mm²
Ex temperature increase 40 K (26 A / 4 mm²)
Rated voltage 550 V
for bridging with bridge 550 V
– At bridging between non-adjacent terminal blocks 352 V
– At bridging between non-adjacent terminal blocks via PE terminal block 352 V
– At cut-to-length bridging 220 V
– At cut-to-length bridging with cover 275 V
– At cut-to-length bridging with partition plate 550 V
Rated insulation voltage 500 V
output (Permanent)
Ex level General
Rated current 26 A (4 mm²)
Maximum load current 30 A (6 mm²)
Contact resistance 0.64 mO
Ex connection data General
Nominal cross section 4 mm²
Rated cross section AWG 12
Connection capacity rigid 0.2 mm² … 6 mm²
Connection capacity AWG 24 … 10
Connection capacity flexible 0.2 mm² … 4 mm²
Connection capacity AWG 24 … 12
Width 6.2 mm
End cover width 2.2 mm
Height 66.5 mm
Depth on NS 35/7,5 36.5 mm
Depth on NS 35/15 44 mm
Color gray
Flammability rating according to UL 94 V0
Insulating material group I
Insulating material PA
Static insulating material application in cold -60 °C
Temperature index of insulation material (DIN EN 60216-1 (VDE 0304-21)) 130 °C
Relative insulation material temperature index (Elec., UL 746 B) 130 °C
Fire protection for rail vehicles (DIN EN 45545-2) R22 HL 1 – HL 3
Fire protection for rail vehicles (DIN EN 45545-2) R23 HL 1 – HL 3
Fire protection for rail vehicles (DIN EN 45545-2) R24 HL 1 – HL 3
Fire protection for rail vehicles (DIN EN 45545-2) R26 HL 1 – HL 3
Calorimetric heat release NFPA 130 (ASTM E 1354) 28 MJ/kg
Surface flammability NFPA 130 (ASTM E 162) passed
Specific optical density of smoke NFPA 130 (ASTM E 662) passed
Smoke gas toxicity NFPA 130 (SMP 800C) passed
Surge voltage test
Test voltage setpoint 9.8 kV
Result Test passed
Temperature-rise test
Requirement temperature-rise test Increase in temperature = 45 K
Result Test passed
Short-time withstand current 4 mm² 0.48 kA
Short-time withstand current 6 mm² 0.72 kA
Result Test passed
Power-frequency withstand voltage
Test voltage setpoint 2 kV
Result Test passed
Mounting type NS 35/7,5
NS 35/15