General
Degree of protection	Hot-dip galvanized
Hammer foot bracket material	Steel
Zinc coating for hammer foot brackets	according to DIN EN ISO 1461
Material for pressure chamber	Polypropylene
Pressure chamber properties	halogen-free, with UV protection, black
Tray insert material	Steel
Zinc coating for tray insert	zinc-coated, galvanised according to DIN EN 10346
Tapered screw	M6
Tapered screw drive	Multi-drive
Cable diameter	22–30 mm
Rail slot width	16–17 mm
Assignment	1 cable
Counter tray	Order separately

The Niedax BK30 is a hammerhead clamp designed specifically for securing cables with a diameter of 22 to 30 mm to C-profile rails. The clamp consists of a hot-dip galvanized steel band, offering high corrosion resistance, and is complemented by a polypropylene (PP) plastic pressure trough, which is halogen-free and features UV protection. The color of the pressure trough is black. The clamp is supplied with an M6 stud screw with multi-drive, enabling secure and easy installation. The trough insert is made of strip galvanized steel in accordance with DIN EN 10346, providing additional protection for the cable against mechanical stress.

Applications
The BK30 is intended for use in electrical and IT installations, particularly in systems where cables must be secured to C-profile rails. The clamp is suitable for rails with a slot width of 16 to 17 mm. It is commonly used in industrial, commercial, and some outdoor applications where robust and durable fastening is required. The use of the clamp is limited to securing a single cable.

Functions and Features in Detail
The hammerhead clamp provides secure and durable cable fastening to the rail. The plastic pressure trough protects the cable from mechanical damage and ensures even load distribution. The UV protection of the pressure trough prevents premature aging of the plastic under sunlight exposure. The M6 stud screw with multi-drive allows for quick and precise installation, being screwed into the rail to fix the clamp. The trough insert made of strip galvanized steel offers additional protection and prevents wear on the cable insulation.

Technology Explained Simply
The clamp operates on the principle of pressure anchoring: the hammerhead band is placed over the cable and secured to the rail using the pressure trough and the stud screw. The pressure trough is compressed by the screw, holding the cable firmly in place. The hot-dip galvanized surface of the steel band protects against corrosion, especially in damp or aggressive environments. The use of polypropylene for the pressure trough ensures high chemical resistance and durability against UV radiation.

Compatibility and Accessories
The BK30 is specifically designed for C-profile rails with a slot width of 16 to 17 mm. Compatible accessories include the GW30 counter trough, suitable for cables with a diameter of 26 to 30 mm. The counter trough is also made of plastic (PE) and is intended for use with the BK30. The combination of BK30 and GW30 enables secure and durable cable fastening.

Installation and Mounting
Installation involves placing the hammerhead clamp over the cable and then screwing the M6 stud screw into the C-profile rail. The screw is tightened until the pressure trough securely holds the cable without damaging it. Installation requires no additional tools beyond a suitable screwdriver or an electric screwdriver that supports the multi-drive of the screw.

Operational Advantages
The BK30 provides reliable and durable cable fastening to C-profile rails. The hot-dip galvanized steel construction ensures high corrosion resistance, while the UV-resistant plastic pressure trough enables long service life even in outdoor applications. The use of strip galvanized steel for the trough insert provides additional protection against mechanical stress on the cable. The clamp is easy to install and requires no special tools, speeding up installation and reducing labor costs.