Phoenix FLT-MB-T1-264/25-1 1-UT - 1 2 3 combined surge protector 1461299, compact, non-"hot" plug-in and leakage-free lightning current/surge protector based on wear-free carbon discharge gap technology, is used for single-phase power supply network (3-wire system: L1, N, PE) with independent N (neutral wire) and PE (protective wire), suitable for use in unmeasured areas, discharge capacity up to 100 kA, lightning protection class I and II.

Product Type combination type
IEC Category I II III
T1 T2 T3
EN Type T1 T2 T3
IEC power supply system TN-S
TT
type rail mounting module, monolithic
Surge protection fault alarm with visual status indication window
insulation characteristics
Overvoltage Category IV
pollution level 2

Rated frequency fN 50Hz (60 Hz)

Connection Mode screw connection
thread M5
Tightening torque 3 Nm (2,5 mm² ... 16 mm²)
4.5 Nm (25 mm² ... 35 mm²)
stripping length 18mm
Flexible Wire Cross Section 2.5 mm² ... 25 mm²
Rigid conductor cross section 2.5 mm² ... 35 mm²
Attachable Guide Cross Section AWG 13 ... 2
Connection Mode fork cable end
Flexible Wire Cross Section 2.5 mm² ... 25 mm²

Dimensional drawing
width 36mm
height 89.8mm
depth 76.6mm (7.5mm with DIN rail)
Horizontal stitch pitch Division 2

color light gray (RAL 7035)
flame retardant rating, according to UL 94 V-0
material 600
insulation material PBT
Material Group I
Shell Material PBT

Mechanical parameters
Open Side Panel No

protection channel L-N
L-PE
N-PE
Rated voltage UN 240V AC (TN-S)
240V AC (TT)
Rated frequency fN 50Hz (60 Hz)
Maximum continuous operating voltage UC 264V AC
Rated load current IL 80 A (< 55 °C)
Residual Flow IPE ≤ 0.01 mA
Nominal discharge current In(8/20) &micro;s (L-N) 25 kA
Nominal discharge current In(8/20) &micro;s (L-PE) 25 kA
Nominal discharge current In(8/20) &micro;s (N-PE) 50 kA
Combined surge UOC 6 kV
impulse current (10/350) & micro;s (L-N), amount of charge 12.5
impulse current (10/350) & micro;s (L-N), characteristic energy 156 kJ/Ω
impulse current (10/350) & micro;s (L-N), peak current Iimp 25 kA
impulse current (10/350) & micro;s (L-PE), amount of charge 12.5
impulse current (10/350) & micro;s (L-PE), characteristic energy 156 kJ/Ω
impulse current (10/350) & micro;s (L-PE), peak current Iimp 25 kA
impulse current (10/350) & micro;s (N-PE), amount of charge 25
impulse current (10/350) & micro;s (N-PE), characteristic energy 625 kJ/Ω
impulse current (10/350) & micro;s (N-PE), peak current Iimp 50 kA
Total discharge current ITotal(10/350) &micro;s 50 kA
Rated open freewheeling value Ifi(L-N) 50 kA
Rated open freewheeling value Ifi(N-PE) 100 A
Rated short-circuit current ISCCR 50 kA
voltage protection level Up(L-N) ≤ 1.5 kV
voltage protection level Up(L-PE) ≤ 2.5 kV
voltage protection level Up(N-PE) ≤ 1.5 kV
Residual pressure Ures(L-N) ≤ 1.5 kV (In)
≤ 1.3 kV (at 12.5 kA)
≤ 1.1 kV (at 5 kA)
≤ 1 kV (at 2.5 kA)
Residual pressure Ures(L-PE) ≤ 1.7 kV (In)
≤ 1.5 kV (at 12.5 kA)
≤ 1.3 kV (at 5 kA)
≤ 1.2 kV (at 2.5 kA)
Residual pressure Ures(N-PE) ≤ 1.3 kV (In)
≤ 1.1 kV (at 25 kA)
≤ 1 kV (10 kA)
≤ 0.5 kV (at 5 kA)
UT(L-N) 457V AC (5 seconds/withstand mode)
457V AC (120 min/tolerance mode)
UT(N-PE) 1200V AC (200 ms/withstand mode)

Phoenix FLT-MB-T1-264/25-1 1-UT - 1 2 3 type combined surge protector 1461299

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Created on：2025-08-05 10:03

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