Page 189 - Surge-Protection-E_0.pdf

Compact SPDs – DIN Rail Mounted

DEHNconnect SD2
• Terminal block with integrated surge protection
– For protecting measuring and control circuits and bus systems
– Maximum impulse current carrying capability Imax up to
20 kA (8/20 µs)
– Low voltage protection level, capable of protecting terminal
equipment
• Modular disconnection function
– Disconnection module for disconnecting the signal circuit for
maintenance work
– Module fixing and mechanical ejector
– Module in "parked" position after disconnection
• Space-saving and function-optimised design
– Terminal block with integrated surge protection (width of 6 mm)
– Fast conductor connection without tools thanks to direct plug-in
technology
Compact SPDs – DIN Rail Mounted
– Can be used with jumper bar (accessory)

Application example: DEHNconnect for protecting the I/O of PLC interfaces.

The surge arresters of the DEHNconnect SD2 series are designed as Conductors are connected via a vibration-proof spring-loaded connection
space-saving terminal blocks with a width of 6 mm. These terminal blocks system. Stripped solid conductors and flexible conductors with wire end
with integrated surge protection have a modular disconnection function ferrule can be easily and quickly inserted into the relevant conductor ter-
that allows them to interrupt the signal circuit for maintenance work. An minal without tools. For rewiring, the conductor is removed from the
integrated module ejector disconnects the signal circuit from the terminal clamping point and clamped into a new conductor terminal.
equipment. The disconnection module does not have to be removed, but To reduce wiring, jumper bars can be inserted on the protected side of the
remains in a "parked" position in the module slot. surge arrester, thus quickly connecting signal circuits.
Different types of arrester are available to protect two single lines sharing The arresters are ideally suited for use in industrial environments at infor-
a common reference potential (unbalanced interfaces) or an unearthed mation technology signal interfaces of automation, measuring and control
pair (balanced interface). Arresters with a high cut-off frequency (HF) can as well as bus systems.
be used for balanced bus interfaces with high data rates (e.g. Profibus,
RS485).

Disconnection module with ejector – Marking of the protected side – mini- Terminals with direct-plug-in tech- Slots for jumper bars – for quickly
for disconnecting the signal circuits. mises wiring errors. nology – fast and vibration-proof connecting signal circuits.
connection.

Valid as of August 1, 2020 You will find detailed product information on our website 185