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3SU71, type 2

Independent power supply with build-in power source,directly draws power from the incoming end to avoid the risk of protection function failure caused by external power supply failure.

● Overload protection
● Short circuit protection
● Isolation
● Controlling
● Used in residential building, non-residential building, industry, energy and infrastructure
Availability:

Functions

●   Types 2 surge arresters

●   Handling energy from distant/ indirect lightning strikes or from switching operations

●   Feature lower protection level (Up)

●   Recommended at the incoming of installation for locations with no exposure to direct lightning impulses


Technical specifications

●   Standard: IEC 61643-1

●   Type / test class: 2 / II

●   Number of poles: 1P, 1P+N, 2P, 3P, 3P+N, 4P

●   Type of current: AC

●   Frequency (Hz): 50/60

●   Rated voltage Un (V): 230/400

●   Max. Cont. operating voltage U (V): 140, 275, 320, 385, 420

●   Max. discharge current Imax (8/20) per pole (kA): 10, 20, 40, 60

●   Norminal discharge current In (8/20) per pole (kA): 5, 10, 15, 20

●   Voltage protection level Up (kV): 1.0, 1.2, 1.2, 1.5

●   Tov (Temporary overvoltage) withstand UT (5 s.) (V): 440

●   Continuous operating current Ic (mA): < 1

●   Degree of protection: IP20, with connected conductors

●   Pluggable cartridge: Yes

●   State indicator: Yes

●   Integrated auxiliary contact: Yes

●   Conductor cross-sections

●   Solid and stranded (mm²): 2-35

●   Finely stranded with end sleeve (mm²): 2-25

●   Terminals

●   Terminal tightening torque (N·m): 2.8

●   Ambient temperature (°C): -5 ~ +40, max. 95 % humidity

●   Storage temperature (°C): -40 ~ +75

●   Connection Capacity (mm²): 1-25


Technical specification of the integrated remote signal contact

●   Contact complement: 1 NO +1 NC

●   Min. load: 24 V DC - 10 mA

●   Max. load: 240 V AC - 1 A


Instruction of type code

3SU71.1


Selection and ordering data

3SU71.2


Selection and ordering data

3SU71.3


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Address: No. 2588 Jinhai Road, Pudong, Shanghai, China

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