Voltage tap-off clamps
Voltage tap-off clamps, also known as tap-off clamps, are used in electrical installations where a measurement voltage is required, for example for energy metering or voltage monitoring. They enable safe and organised voltage tapping without the need to modify existing wiring or busbar structures. As such, tap-off clamps form an essential link between the main installation and measuring or monitoring devices such as power quality analysers, power analysers, energy analysers and kWh meters.
Integrated fuse: protection directly from the tap-off point
An unprotected wire segment after a voltage tap-off presents a serious fire and safety hazard. This section is not protected against short circuits, which can lead to fire, explosion, equipment damage, and personal injury. According to applicable standards, protection must be placed as close as possible to the tap-off point. In practice, a maximum length of 30 cm is used, as tapping off safely right at the source is often difficult or impossible. With the fused CONLOX® voltage tap-off clamps, the fuse is placed directly at the tap-off point, ensuring immediate protection. In addition, circuit breakers or fuse holders on a DIN rail are no longer required, saving on installation costs and space.
Tap-off clamps for safe measurement connections
The CONLOX® system from LANIOL includes both yellow and blue voltage tap-off clamps.
Phase tap-off clamps:
All yellow voltage tap-off clamps are phase tap-off clamps equipped with a built-in 6 A fuse with a short-circuit capacity of up to 70 kA at 500 Vac for additional protection towards the measuring systems.
Neutral tap-off clamps:
There are also neutral tap-off clamps available, recognisable by their blue colour. These clamps are not fitted with a fuse, as protection in the neutral conductor is not permitted under current standards.
Both phase and neutral tap-off clamps are suitable for existing and new installations and are available in various mounting options.
Various mounting options for every situation
The CONLOX® system from LANIOL offers multiple mounting methods for safe and efficient voltage tapping. Depending on the installation environment, four variants are available:
Mounting on the live busbar
The standard variant is mounted directly on the live busbar and is available in two types: one for busbars up to 5 mm thick and one for up to 10 mm. Both versions provide a stable connection with minimal space requirements.
Mounting on hex bolt
For installations where tapping must be done on an existing connection bolt, LANIOL offers two variants. Both are suitable for direct mounting on the head of a hex bolt. One variant is suitable for an M10 bolt (with a 17 mm hex head) and the other for an M12 bolt (with a 19 mm hex head).
Mounting on Allen bolt
The CONLOX® system from LANIOL also offers terminals designed for installation in a 6 mm Allen socket (hex socket). These variants are available with a 6 mm (short) or 8 mm (long) pin, depending on the required depth.
Mounting on NH fuse
For temporary connections on NH fuses, LANIOL offers specific CONLOX® variants. These are mounted directly onto the fuse blade and are available in two types: with a short or long contact pin.
Thanks to these diverse mounting options, the CONLOX® system from LANIOL provides a safe and suitable solution for nearly every busbar cabinet or distribution board, whether in retrofit projects or new installations.
PlugSafe Tool for safe installation of CONLOX® tap-off clamps
The PlugSafe Tool from LANIOL allows safe and efficient installation of CONLOX® tap-off clamps. A suitable version is available for every situation:
- 12KK170: short pin (170 mm) for standard applications
- 12KK305: long pin (305 mm) for hard-to-reach places, such as deep switch cabinets
The PlugSafe Tool is compatible with VDE-certified handles and screwdrivers from Wera, enabling safe and controlled installation.
Installation under voltage
Although the clamps can technically be installed under voltage, this must only be done under specific conditions and by authorised, trained personnel.
Instruction videos
Watch the videos below to see how easy it is to use the CONLOX® voltage tap-off clamps from LANIOL in practice and how they are applied.
- Watch: connecting the voltage measurement cable
- Watch: use of the integrated strain relief
- Watch: mounting on a busbar
- Watch: mounting on the head of a hex bolt
- Watch: mounting on the head of a Allen bolt (hex socket screw)
- Watch: mounting on a NH fuse (knife-blade fuse)
Disclaimer
The videos may give the impression that CONLOX® voltage tap-off clamps can be installed under live conditions. Although this is technically possible, installation under voltage is only permitted under strict conditions and by authorised, trained personnel. Applicable safety regulations must always be followed.
