General
Operating voltage	450 V
Nominal current	76 A
Nominal cross section	16 mm²
Max. terminable per side	16 mm² solid or 10 mm² flexible or 6 mm² flexible
Ambient temperature	-5 to +80 °C
Terminal material	Steel
Screw material	Galvanized steel
Removability	in individual terminals via 'twist'n'pull'
Test standard	EN 60998
Number of poles	12
Screw anchoring	raised, non-removable

The OBO Bettermann series terminal block type 78 CE WS is an electrical connection component for use in installation systems, particularly in the field of home automation and TEBIS TS technology. The product is designed for secure and durable connection of conductors with a nominal cross-section of up to 16 mm². It is a 12-pole terminal block that can be separated into individual terminals, with separation achieved via the 'twist'n'pull' method. The terminals are made of steel, and the screws are also made of steel and galvanically zinc-plated, ensuring high corrosion resistance. The screws are pre-tightened and thus non-removable, simplifying installation and maintenance.

Applications

The terminal block is designed for use in electrical installations tested according to the standard EN 60998. It is particularly suitable for applications in building automation, where reliable and maintenance-friendly conductor connections are required. The maximum ambient temperature is -5 to +80 °C, enabling use in indoor environments and protected outdoor areas. The terminal block is rated for a nominal voltage of 450 V and a nominal current of 76 A, making it suitable for a wide range of electrical loads.

Functions and Equipment in Detail

The 12-pole construction allows for the parallel connection of multiple conductors within a single component. The separation of individual terminals is achieved via the 'twist'n'pull' method, in which the terminal is twisted and then pulled out. This facilitates adaptation of the terminal block to different connection requirements. The maximum terminal capacity is 16 mm² per side for rigid conductors, 10 mm² for flexible conductors, or 6 mm² for highly flexible conductors. The galvanic zinc plating of the screws ensures high mechanical strength and corrosion protection, extending the product's service life.

Technology Explained Simply

The terminal block is designed for use in electrical circuits where a stable and secure connection is required. The use of steel for the terminals and screws ensures high electrical conductivity and mechanical strength. The galvanic zinc plating protects the metal parts from oxidation and corrosion, especially in humid or aggressive environments. The 'twist'n'pull' function allows flexible adjustment of the number of terminals to match the specific connection configuration, without requiring additional tools or spare parts.

Compatibility and Accessories

The terminal block is intended for use in TEBIS TS technology systems and can be used in conjunction with other products from the OBO Bettermann range, particularly in installation systems for home automation. Compatibility with other components of the same product series is provided, with the exact mounting instructions corresponding to the respective system.

Mounting and Installation

Installation is performed using the 'twist'n'pull' method, where the desired number of individual terminals are separated. The screws are pre-tightened, so they do not get lost during installation. The terminal block is inserted into the respective mounting system, with electrical conductors connected according to the nominal cross-section (up to 16 mm² rigid, 10 mm² flexible, or 6 mm² highly flexible). Installation requires no additional tools, as the screws are pre-tensioned.

Operational Advantages

The terminal block offers high reliability and longevity due to the use of galvanically zinc-plated steel. The non-removable screws reduce the risk of installation errors and simplify maintenance. The flexible separation of individual terminals enables adaptable installation that can be adjusted to different connection configurations. The high nominal voltage of 450 V and nominal current of 76 A make the terminal block suitable for a wide range of applications, particularly in building automation and electrical installation systems.

Protection Rating

The terminal block is not specified as an IP-rated component, as it is intended for use in enclosed switch cabinets or installation systems. The ambient temperature range of -5 to +80 °C is defined according to EN 60998, enabling use in indoor environments and protected outdoor areas. The galvanic zinc plating of the screws provides additional corrosion protection.

Technical Standards

The product is tested according to EN 60998, ensuring the safety and reliability of the electrical connection. The standard sets requirements for electrical conductivity, mechanical strength, and thermal load capacity. Compliance with this standard is essential for safe operation in electrical installations.

Nominal Cross-Section

The maximum nominal cross-section is 16 mm² for rigid conductors, 10 mm² for flexible conductors, or 6 mm² for highly flexible conductors. This allows connection of conductors of different types and cross-sections, with the specific application determining the selection.

Nominal Voltage and Nominal Current

The terminal block is rated for a nominal voltage of 450 V and a nominal current of 76 A. These values are critical for selecting the terminal block based on the electrical load and voltage of the system. Adherence to these values ensures safe and reliable operation.

Materials

The terminals are made of steel, and the screws are also made of steel and galvanically zinc-plated. The zinc plating protects the metal parts from corrosion and increases the product's service life. The material selection ensures high electrical conductivity and mechanical strength.

Separability

The 12-pole terminal block is separable into individual terminals, with separation achieved via the 'twist'n'pull' method. This enables flexible adaptation to different connection requirements, without requiring additional tools or spare parts.

Ambient Temperature

The maximum ambient temperature is -5 to +80 °C, enabling use in indoor environments and protected outdoor areas. The temperature limits are defined according to EN 60998 and ensure the terminal block's functionality under various operating conditions.

Application Areas

The terminal block is particularly intended for use in home automation systems and TEBIS TS installations. It is suitable for electrical installations where a secure and maintenance-friendly connection of conductors is required. Use in enclosed switch cabinets or installation systems is intended, with environmental conditions remaining within the specified temperature limits.