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3SB71Z-63, for DC applications

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

●   Overload protection

●   Short circuit protection

●   Controlling

●   Protection for people and big length cables in TN and IT systems

●   DC string protection: Protects the PV module from dangerous high DC back current

●   Application in direct current circuit, like motors, auxiliary, circuits and photovoltaic.

●   Used in industry and new energy



Technical specifications

●   Standard: IEC 60898-2

●   Rated current In (A): 6, 10, 16, 20, 25, 32, 40, 50, 63

●   Number of poles: 1, 2

●   Rated voltage Ue (V DC):

●   1P: 220

●   2P: 440

●   Operational voltage Ub (V DC):

●   Min. : 12

●   Max. : 1P: 250; 2P: 500

●   Rated insulation voltage (V AC): 500

●   Rated frequency (Hz): 50/60

●   Rated impulse withstand voltage (kA): 5

●   Tripping characteristic: B, C

●   Characteristic B (In): 4~7

●   Characteristic C (In): 7~15

●   Thermal operating limit (In): 1.13~1.45

●   Rated breaking capacity:

Model Rated voltage(V) Acc. to IEC 60898-2

Icn(kA)

Ics(kA)
3SB71Z-63 1P 220 V DC 10 7.5
2P 400 V DC 10 7.5

●   Mounting position: Any

●   Conductor cross-sections

●   Solid and stranded (mm²): 0.75-35

●   Finely stranded with end sleeve (mm²): 0.75-25

●   Terminal tightening torque (N·m): 2.8

●   Ambient temperature (°C): -25 ~ +45, max. 95 % humidity

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

●   Altitude (meters): Max. 2,000

●   Connection Capacity (mm²): 1-25


References

●   Additional components: page 189 ~ 191


Instruction of type code

3SB71Z-63.1


Features

●   The handle being sealable or equipped with padlock bracket avoids dangerous operation changes (ON / OFF)

●   The handle provides a clear indication of the contact position

●   Adequate printing of all data on the front provides long-term identification

●   Energy limiting class: 3

●   The emission of ionized gases is limited to the severest restrictions: 45 mm grid distance

●   This MCB for household in accordance with IEC 60898-2, B, C tripping characteristics

●   This MCB may be extended with:

●   Full sets additional components

●   Full sets of accessories



Add-on devices

Auxiliaries

3SB71Z-63.2


Selection and ordering data

IEC 60898-2 10 kA

3SB71Z-63.3


Outline and installation dimensions

3SB71Z-63.5


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