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2788281 - Phoenix Contact Surge Protection Device

Surge protection device Disconnect terminal block with surge voltage fine protection, nominal voltage: 24 V AC, for mounting on NS 32 or NS 35/7.5, closed housing, terminal width: 8.2 mm, terminal height: 51.5 mm


Part #: 2788281
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Phoenix Contact Surge Protection Device

Terminal Type: Disconnect Terminal Block
Includes: Surge Voltage Fine Protection
Housing Type: Closed Housing
Nominal Voltage: 24 VAC
Terminal Width: 8.2 MM
Terminal Height: 51.5 MM
Product Type: Surge Protection Device
  • Connection data
    Conductor cross section AWG/kcmil max: 8
    Conductor cross section AWG/kcmil min.: 20
    Conductor cross section solid max.: 10 mm²
    Conductor cross section solid min.: 0.5 mm²
    Conductor cross section stranded max.: 6 mm²
    Conductor cross section stranded min.: 0.5 mm²
    Connection method: Screw connection
    Connection type IN: Screw terminal blocks
    Connection type OUT: Screw terminal blocks
    Screw thread: M3
    Stripping length: 13 mm
    Tightening torque: 0.5 Nm
  • Connection, protective circuit
    Standards/regulations: IEC 61643-21
  • General
    Ambient temperature (operation): -40 °C ... 85 °C
    Color: black
    Degree of protection: IP20
    Design: Single-level terminal block with disconnect slide
    Direction of action: Line-Earth Ground
    Height: 51.5 mm
    Housing material: PA
    Inflammability class according to UL 94: V2-V0
    Length: 72 mm
    Mounting type: DIN rail/G-profile rail
    Number of positions: 1
    Total surge current (8/20) µs: 119 A
    Width: 8.2 mm
  • Protective circuit
    Capacity (Core-Earth): ? 1.03 nF
    Cut-off frequency fg (3 dB), asym. (PE) in 150 Ohm system: Typ. 1.6 MHz
    Ground conductor current I<sub>PE</sub>: ? 5 µA
    IEC category: C3
    Max. discharge surge current Imax (8/20) µs maximum (Core-Earth): 119 A
    Maximum continuous operating voltage U<sub>C</sub>: 40 V DC
    Maximum continuous operating voltage U<sub>C</sub>: 28 V AC
    Maximum continuous voltage U<sub>C</sub> (wire-ground): 40 V DC
    Maximum continuous voltage U<sub>C</sub> (wire-ground): 28 V AC
    Nominal current I<sub>N</sub>: 57 A (45°C)
    Nominal discharge surge current I<sub>n</sub> (8/20) µs (Core-Earth): 119 A
    Nominal pulse current Ian (10/1000) µs (Core-Earth): 23.2 A
    Nominal voltage U<sub>N</sub>: 24 V AC
    Output voltage limitation at 1 kV/µs (Core-Earth) spike: ? 62 V
    Output voltage limitation at 1 kV/µs (Core-Earth) static: ? 58 V
    Residual voltage at I<sub>n</sub>, (conductor-ground): ? 84 V
    Response time tA (Core-Earth): ? 1 ns
    Surge carrying capacity in acc. with IEC 61643-21 (Core-Earth): C3 (10 A)
    Total surge current (8/20) µs: 119 A
    VDE requirement class: C3
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