• Siemens SENTRON 5SD74 surge arresters, type 2 (narrow design)
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Siemens SENTRON 5SD74 surge arresters, type 2 (narrow design)

Siemens SENTRON 5SD74 surge arresters, type 2 (narrow design)

Space-saving SENTRON 5SD74 type 2 surge arresters in narrow design for TN-S and TT systems.

Key features

  • Narrow design: 24 mm for 1+1, 48 mm for 3+1
  • For TN-S and TT systems 240 V AC and 240/415 V AC
  • Versions with and without remote signaling
  • Replaceable spare part plugs

Specifications

Brand Siemens SENTRON
Series 5SD74
SPD type Type 2
System TN-S and TT
Mounting DIN rail
Source Siemens Catalog LV 10 · 2026, p. 520-521
5SD7422-1 System: TN-S and TT | Protection paths: L-N and N-PE | Un / Uc: 240 V AC / 350/264 V AC | Circuit: 1 + 1 | Remote signaling: Yes | Mounting width: 24 mm (1 1/3 MW)
5SD7424-1 System: TN-S and TT | Protection paths: L-N and N-PE | Un / Uc: 240/415 V AC / 350/264 V AC | Circuit: 3 + 1 | Remote signaling: Yes | Mounting width: 48 mm (2 2/3 MW)
5SD7422-0 System: TN-S and TT | Protection paths: L-N and N-PE | Un / Uc: 240 V AC / 350/264 V AC | Circuit: 1 + 1 | Remote signaling: No | Mounting width: 24 mm (1 1/3 MW)
5SD7424-0 System: TN-S and TT | Protection paths: L-N and N-PE | Un / Uc: 240/415 V AC / 350/264 V AC | Circuit: 3 + 1 | Remote signaling: No | Mounting width: 48 mm (2 2/3 MW)
5SD7428-0 System: Spare part plug | Protection paths: N-PE | Un / Uc: - | Circuit: For 5SD7422-0/-1, 5SD7424-0/-1 | Remote signaling: - | Mounting width: -
Surge Protection DevicesSiemens
5 product codes available in this family
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Siemens SENTRON 5SD74 surge arresters, type 2 (narrow design)

Brand Siemens·Surge Protection Devices

Available part numbers (5)

5SD7422-1, 5SD7424-1, 5SD7422-0, 5SD7424-0, 5SD7428-0

How to order

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Product codes & specifications
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Product codeSpec
5SD7422-1System: TN-S and TT | Protection paths: L-N and N-PE | Un / Uc: 240 V AC / 350/264 V AC | Circuit: 1 + 1 | Remote signaling: Yes | Mounting width: 24 mm (1 1/3 MW)
5SD7424-1System: TN-S and TT | Protection paths: L-N and N-PE | Un / Uc: 240/415 V AC / 350/264 V AC | Circuit: 3 + 1 | Remote signaling: Yes | Mounting width: 48 mm (2 2/3 MW)
5SD7422-0System: TN-S and TT | Protection paths: L-N and N-PE | Un / Uc: 240 V AC / 350/264 V AC | Circuit: 1 + 1 | Remote signaling: No | Mounting width: 24 mm (1 1/3 MW)
5SD7424-0System: TN-S and TT | Protection paths: L-N and N-PE | Un / Uc: 240/415 V AC / 350/264 V AC | Circuit: 3 + 1 | Remote signaling: No | Mounting width: 48 mm (2 2/3 MW)
5SD7428-0System: Spare part plug | Protection paths: N-PE | Un / Uc: - | Circuit: For 5SD7422-0/-1, 5SD7424-0/-1 | Remote signaling: - | Mounting width: -

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