Serviceline Industrial Sensors
Serviceline Explosion Protection

Surge Protection Barrier M-LB-1.275.D

  • Surge protection for 1 supply line
  • Type 2 acc. to EN 61643-11
  • For 230 V
  • Pre-wired unit
  • Operating state and fault indication of every protected line
  • Fault indication output
  • DIN rail mountable

Download the complete datasheet as a PDF:

Datasheet excerpt: Technical data of M-LB-1.275.D

General specifications
Device typetype 2 acc. to EN 61643-11
class II acc. to IEC 61643-1
Number of protected supply lines1
Suitable componentsprotection module M-LB-1.275.M
Electrical specifications
Nominal voltage230 V AC
Maximum continuous operating voltagemax. 275 V AC
max. 350 V DC
Temporary over-voltage335 V / 5 s (TOV withstand)
Nominal discharge current (8/20 µs)20 kA
Max. surge current (8/20 µs)40 kA
Voltage protection levelmax. 1.25 kV
max. 1 kV at 5 kA
Reaction timemax. 25 ns
Short-circuit-proof50 kA eff
Overcurrent protectionmax. 125 A gG , mains-side
Fault indication output
Connectionterminals 11, 12, 14
Outputvolt-free change-over contact
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
Display elementsstatus display
operating state (green)
fault indication (red)
Directive conformity
Low voltage
Directive 2014/35/EUEN 61643-11:2012
Degree of protectionIEC 60529
Shock resistanceEN 60068-2
Vibration resistanceEN 60068-2
Ambient conditions
Ambient temperature-40 ... 80 °C (-40 ... 176 °F)
Relative humidity5 ... 95 %
Mechanical specifications
Degree of protectionIP20
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)
Housingthermoplastic, color grey , UL 94 V-0
Massapprox. 240 g
Dimensions18 x 90 x 73 mm (0.7 x 3.6 x 2.9 inch) (1 TE acc. to DIN 43880)
Mountingon 35 mm DIN mounting rail acc. to EN 60715:2001
General information
Supplementary informationObserve the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see

Documents: M-LB-1.275.D

Instruction leafletsLanguageFile TypeFile Size
Installation instructions M-LB-1.***.D / Montageanleitung M-LB-1.***.DALLPDF1075 KB

Approvals+Certificates: M-LB-1.275.D

Statements of complianceCertificate No.File TypeFile Size
EU-Declaration of conformity / EU-KonformitätserklärungDOC-0925APDF67 KB
Canada UL Surge Protective Device cULE346845 cUL (VZCA8)LINK---
Europe DEKRA Surge Protective DeviceKEMA 2179748.02PDF221 KB
USA UL Surge Protective Device ULE346845 UL (VZCA2)LINK---