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Banarsi Complex, Ist Floor, Opposite Umrao Theatre, Nishatganj
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SLP 275V 3+1 Three Phase Class C Surge Protection Device

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Surge Arresters

SLP-275 V/3+1

SLP-275 V/3S+1

SPD type 2 – surge arrester

Replaceable module, visual fault signaling Combination of 3-pole varistor surge protection and an

encapsulated spark gap connected in the mode 3+1. To be installed in low-voltage distributions at the boundary of LPZ 1 and LPZ 2 zones to protect distributions and equipment against the overvoltage effects induced during a lightning strike and to prevent switching overvoltage. Optional remote status signalling (S).

Technical data



Nominal voltage Un

230 V AC


Maximum operating voltage Uc

275 V AC

255 V AC

Nominal discharge current (8/20 μs)/pole In

20 kA

20 kA

Maximum discharge current (8/20 μs)/pole Imax

40 kA


Voltage protection level @ I = 5 kA (8/20 μs) Up

0,9 kV


Voltage protection level Up

1,2 kV

1,5 kV

Response time ta

25 ns

100 ns

Ability to independently switch off the following current Ifi

no following current

100 A

Short-circuit proof at maximum overcurrent protection

35 kArms


Maximum overcurrent protection

160 A gL/gG


Degree of protection

IP 20

IP 20

Range of operating temperatures

– 40 °C … + 80 °C

– 40 °C … + 80 °C

Mounting on

DIN rail 35 mm

DIN rail 35 mm

Cross-section of connected conductors

Solid min/max

Stranded min/max

ISO: 1/50 mm2 ; AWG: 17/1

ISO: 1/35 mm2 ; AWG: 17/2

ISO: 1/50 mm2 ; AWG: 17/1

ISO: 1/35 mm2 ; AWG: 17/2

For Catalouge,Kindly check Attachment.


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