DEHNconnect SD2 Ex (i)
Terminal Block with integrated Surge Protection
- Terminal block with integrated surge protection
- For protecting intrinsically safe measuring and control circuits and bus systems (Ex (i))
- Maximum impulse current carrying capability Imax up to 20 kA (8/20 µs)
- Low voltage protection level, capable of protecting terminal equipment
- Approvals: ATEX, IECEx 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
- Can be used with jumper bar (accessory)
Description
The surge arresters of the DEHNconnect SD2 series are designed as space-saving terminal blocks with a width of 6 mm. These terminal blocks with integrated surge protection have a modular disconnection function that allows them to disconnect the signal circuit for maintenance work. An integrated module ejector disconnects the signal circuit from the terminal equipment. The disconnection module does not have to be removed, but remains in a "parked" position in the module slot.
DEHNconnect SD2 Ex (i) is designed for intrinsically safe measuring and control circuits and bus systems and protects one unearthed pair (balanced interface).
Conductors are connected via a vibration-proof spring-loaded connection system. Stripped solid conductors and flexible conductors with wire end ferrule can be easily and quickly inserted into the relevant conductor terminal without the use of tools. For rewiring, the conductor is removed from the clamping point and clamped into a new conductor terminal.
To reduce wiring, jumper bars can be inserted at the protected side of the surge arrester, thus quickly connecting signal circuits.
The arresters are ideally suited for use in the process industry to protect Ex (i) measuring circuits and interfaces for bus communication (e.g. Fieldbus Foundation or Profibus PA).
DEHNconnect SD2 Ex (i) is designed for intrinsically safe measuring and control circuits and bus systems and protects one unearthed pair (balanced interface).
Conductors are connected via a vibration-proof spring-loaded connection system. Stripped solid conductors and flexible conductors with wire end ferrule can be easily and quickly inserted into the relevant conductor terminal without the use of tools. For rewiring, the conductor is removed from the clamping point and clamped into a new conductor terminal.
To reduce wiring, jumper bars can be inserted at the protected side of the surge arrester, thus quickly connecting signal circuits.
The arresters are ideally suited for use in the process industry to protect Ex (i) measuring circuits and interfaces for bus communication (e.g. Fieldbus Foundation or Profibus PA).
Detail 1
Disconnection module with ejector – for disconnecting the signal circuits.
Detail 2
Marking of the protected side – minimises wiring errors.
Detail 3
Terminals with direct plug-in technology – fast and vibration-proof connection without tools.
Detail 4
Slots for jumper bars – for quickly connecting signal circuits.
