Pepperl+Fuchs M-LB-2.275TT.D Surge Protection Barrier

Pepperl+Fuchs M-LB-2.275TT.D
Item Number: M-LB-2.275TT.D
  • Surge protection for 2 supply lines
  • Type 2 acc. to EN 61643-11
  • For TT and TN systems (230 V AC)
  • Pre-wired unit
  • Operating state and fault indication of every protected line
  • Fault indication output
  • DIN rail mountable
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Display elementsstatus display
operating state (green)
fault indication (red)
Follow current extinguishing capability100 A eff (N-PE)
Nominal discharge current (8/20 µs)20 kA
Degree of protectionIP20
Short-circuit-proof50 kA eff
Degree of protectionIEC 60529
Ambient temperature-40 ... 80 В°C (-40 ... 176 В°F)
Supplementary informationObserve the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see www.pepperl-fuchs.com.
Overcurrent protectionmax. 125 A gG , mains-side
Number of protected supply lines2
Core cross-section- min. 1.5 mm2 solid/flexible
- max. 35 mm2 stranded/25 mm2 flexible
- max. 1.5 mm2 solid/flexible (for remote signalling contact)
Max. surge current (8/20 µs)40 kA
Reaction timemax. 25 ns (L-N)
max. 100 ns (N-PE)
Network configurationTT
Shock resistanceEN 60068-2
Total discharge current (8/20 µs)12 kA (N-PE)
Dimensions36 x 90 x 73 mm (1.4 x 3.6 x 2.9 inch) (2 TE acc. to DIN 43880)
Vibration resistanceEN 60068-2
Device typetype 2 acc. to EN 61643-11
class II acc. to IEC 61643-1
Massapprox. 240 g
Voltage protection levelmax. 1.25 kV (L-N)
max. 1 kV at 5 kA (L-N)
≤ 1.5 kV (N-PE)
Suitable componentsprotection module M-LB-1.275.M
protection module M-LB-1.NPE.M
Connectionterminals 11, 12, 14
Outputvolt-free change-over contact
Maximum continuous operating voltage275 V AC, 50 ... 60 Hz (L-N)
255 V AC, 50 ... 60 Hz (N-PE)
Mountingon 35 mm DIN mounting rail acc. to EN 60715:2001
Switch powerAC: 250 V / 0.5 A
DC: 250 V/0.1 A; 125 V/0.2 A; 75 V/0.5 A; 24 V/0.5 A
Temporary over-voltage335 V/5 s (TOV withstand) (L-N)
1200 V/200 ms (TOV withstand) (N-PE)
Relative humidity5 ... 95 %
Nominal voltage230 V AC, 50 ... 60 Hz

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