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Pepperl Fuchs

Pepperl Fuchs M-LB-4.275TT.D

Surge Protection Barrier

MPN: M-LB-4.275TT.D
Category: Devices for Supply Line Protection

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What is the Pepperl Fuchs M-LB-4.275TT.D?

Surge protection for 4 supply lines

Type 2 acc. to EN 61643-11

For TT and TN-S systems (230 V AC/400 V AC)

Pre-wired unit

Operating state and fault indication of every protected line

Fault indication output

DIN rail mountable

Surge protection for 4 supply lines, Type 2 acc. to EN 61643-11, For TT and TN-S systems (230 V AC/400 V AC), Pre-wired unit, Operating state and fault indication of every protected line, Fault indication output, DIN rail mountable, Device type: Type 2 acc. to EN 61643-11 , Class II acc. to IEC 61643-11, Number of protected supply lines: 4

Specifications

General specifications

Order code (Pepperl+Fuchs part number)	235913
Device type	Type 2 acc. to EN 61643-11 Class II acc. to IEC 61643-11
Number of protected supply lines	4
Suitable components	protection module M-LB-1.275.M protection module M-LB-1.NPE.M
Lifecycle	Active (current Pepperl+Fuchs product)

Electrical specifications

Nominal voltage	230 V AC, 50 ... 60 Hz 400 V AC, 50 ... 60 Hz UN
Maximum continuous operating voltage	275 V AC, 50 ... 60 Hz (L-N) 255 V AC, 50 ... 60 Hz (N-PE) Uc
Temporary over-voltage	335 V/5 s (TOV withstand) (L-N) 1200 V/200 ms (TOV withstand) (N-PE) Ut
Nominal discharge current (8/20 µs)	20 kA In
Max. surge current (8/20 µs)	40 kA Imax
Total discharge current (8/20 µs)	12 kA (N-PE) Itotal
Voltage protection level	max. 1.25 kV (L-N) max. 1 kV at 5 kA (L-N) ≤ 1.5 kV (N-PE) Up
Reaction time	max. 25 ns (L-N) max. 100 ns (N-PE) tA
Follow current extinguishing capability	100 A eff (N-PE) Ifi
Short-circuit-proof	50 kA eff
Overcurrent protection	max. 125 A gG , mains-side

Fault indication output

Connection	terminals 11, 12, 14
Output	volt-free change-over contact
Switch power	AC: 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

Indicators/settings

Display elements

status display operating state (green) fault indication (red)

Directive conformity

Low voltage: Directive 2014/35/EU

EN 61643-11:2012

Conformity

Degree of protection	IEC 60529
Shock resistance	EN 60068-2
Vibration resistance	EN 60068-2

Ambient conditions

Ambient temperature	-40 ... 80 °C (-40 ... 176 °F)
Relative humidity	5 ... 95 %

Mechanical specifications

Degree of protection	IP20
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)
Material: Housing	thermoplastic, color grey , UL 94 V-0
Mass	approx. 480 g
Dimensions	72 x 90 x 72 mm (2.8 x 3.6 x 2.8 inch) (W x H x D) , 4 TE acc. to DIN 43880
Mounting	on 35 mm DIN mounting rail acc. to EN 60715:2001

General information

Supplementary information

Observe the certificates, declarations of conformity, instruction manuals, and manuals where applicable. For information see www.pepperl-fuchs.com.

Downloads & documentation

Official documents from Pepperl Fuchs, downloaded directly from the manufacturer.

Data sheets & manuals

Certificates (3)

M-LB-4.275TT.D: frequently asked questions

When can M-LB-4.275TT.D be shipped?

M-LB-4.275TT.D is sourced on request — request a quote and we'll confirm the exact availability and shipping timeline for this specific unit.

Can I pick up M-LB-4.275TT.D in person?

Local pickup from our Groningen, Netherlands warehouse may be possible — contact us before ordering to check availability and arrange a collection time.

Is express delivery available?

Yes — mention it when you request a quote for M-LB-4.275TT.D and we'll include express shipping options in our reply.

My factory is down and I need this urgently — can you help?

For a critical breakdown, contact us directly at +31 (0)50-7110348 or sales@partnerplc.com — we can look into same-day courier or dedicated taxi/hotshot delivery for M-LB-4.275TT.D, subject to availability and destination.