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Surge circuit breaker for protection of Type 2 AC SPD

SSD40S-40-230
Part Number 805114

  • SPD Specific Disconnectors (SSD) for short circuit protection of Type 2 AC surge protectors

  • Surge current withstand: 40 kA @ 8/20µs

  • Wide range of short circuit current protected

  • Reusable after switch triggered

  • Low rated tripping current with time-current characteristics for overcurrent coordination with upstream OCPD and safety disconnect in case of SPD failure

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The SSD range has been especially designed to be associated with SPDs. These very specific devices with built-in GDT are able to conduct huge surge currents in rather small dimensions to protect Type 2 SPDs against harsh current circuit failures, furthermore, the coil in the SSD can cut off the minimum fault current. In order to comply IEC 61643-11 standards, AC power SPD must be protected against short circuit failures: these specific SPD disconnectors must be installed in the SPD branch.
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Max. AC operating voltage
Uc 400 Vac
Nominal discharge current
15 x 8/20 µs impulses
 In 20 kA
Max. discharge current
max. withstand @ 8/20 µs by pole
 Imax 40 kA
Breaking capacity
 100 000 A
Residual voltage
 Up < 2.3 kV @ 6 kV (1.2/50 µs)
Format
 Monobloc modular box
Mounting
 Symmetrical rail 35 mm (EN 60715)
Operating temperature
 Tu -40/+85°C
Protection rating
 IP20
Dimensions
 See diagram - 1TE (EN43880)
Weight
 0.124 kg
Standards compliance
 GB/T 18802.11 / IEC 61643-11 / NB/T 42150