• Surge arrester for KNX / EIB buses
  • Extremely space-saving due to KNX / EIB bus terminal design
  • System-tested with EIBA certification


Protection of a KNX bus coupling unit by means of a BUStector surge arrester mounted on a bus terminal in the mounting panel of a cable duct.
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Protection of a KNX power supply unit by means of a BUStector surge arrester mounted in the standard bus terminal slot.
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Surge arrester with KNX bus terminal design, adapted to the immunity of KNX / EIB systems. EIBA-certified.

1 Product

Part No. 925001 BT 24

GTIN 4013364047365, Customs tariff No.: 85363010, Gross weight: 10.10 g, PU: 1.00 pc(s)


Additional information

BUStector BT 24 surge arrester with bus terminal design
Surge arrester BUSTECTOR, SPD class TYPE 2,
tested acc. to EN 61643-21, for the protection of
EIB/Konnex bus systems and for plugging into a
bus coupling unit instead of a standard bus
terminal, EIBA certification

Max. continuous operating voltage (d.c.): 45 V
C2 Nominal discharge current per line: 5 kA

Brand: DEHN
Type: BT 24
Part No.: 925001
or equivalent.



Technical data

SPD class B
Max. continuous operating voltage (d.c.) (UC ) 45 V
Nominal current (IL ) 6 A
D1 Lightning impulse current (10/350 µs) per line 1 kA
C2 Nominal discharge current per line (In ) 5 kA
Cut-off frequency line-line (fG ) 70 MHz
Approvals EIBA certification No. Z 32/1399/95, EAC

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