binder UK Ltd – Reliable power supply for automation devices

August 05, 2022

From sensor technology to bus applications and lighting installations: thanks to their robust design, the 7/8″ connectors with UL approval from Binder facilitate the supply of components and devices in plant technology. automating.

A unified mating face for all manufacturers promises application flexibility and security of supply.

binder presents its program for 7/8” connectors. Designed in 3, 4 or 5 pin variants, connectors with screw terminals as well as pre-assembled cable connectors with straight or angled cable outlets are available.

Products equipped with reliable screw locking meet the requirements for degree of protection IP67 – encapsulated cables even IP68 – and have UL certification for use on the North American continent.

With a current of up to 13 A in the 3-pin version and a nominal voltage of 300 V or 600 V according to UL guidelines, binder’s 7/8” circular connectors are suitable for power applications in power technology. automating.

Well-established interface for powering the device
Important areas of application for the 7/8” flexible technology are in process, factory and warehouse automation, for example in the packaging or food industry. Here it is a proven element in the supply of sensors, actuators and various fieldbus devices.

Practical examples include drive or lighting technology and the electrical connection of heaters. Powering active distribution boxes, often also called sensor-actuator boxes, using 7/8” connectors is very common.

The main purpose of these devices is to simplify the wiring of complex field installations. As such, they are considered key components of robust decentralized automation solutions, but require equally robust connection technology. Binder’s 7/8” connectors, which are protected according to IP67/IP68 against the effects of particles and moisture, stand out here as durable and industrial-grade components for the power supply.

7/8”: origin and particularities
7/8” connectivity has its origins in the late 1960s. At that time it was used in the United States as the standard interface for sensor technology – an area of ​​application dominated today by M12 connectors .

Thanks to its robust design, including 2 mm diameter contacts, the field of use of 7/8” technology has shifted; today, it is mainly used in the supply of components and devices in automation technology.

Important for users: the quasi-standard NFPA/T3.5.29 R1-2007 defines a contact face for 7/8″ products. The unified contact face guarantees compatibility between connectors from different manufacturers. Thus, a on the one hand, users can choose from a large number of products; on the other hand, this variety and compatibility – in times of sensitive supply chains – promises a certain security of supply.

Optional field wiring or ready to connect
For power supply applications in the automation environment, binder offers various ready-to-connect, pre-assembled and molded cables: in straight and angled versions, in different lengths and with stainless steel cable screws for a use in corrosive ambient conditions.

Field-wired products, on the other hand, allow greater flexibility in the choice of materials and cable lengths. The screw termination inside ensures a detachable and cost-effective connection. Cables with a diameter of 6 mm to 12 mm can be connected; possible wire gauges are up to 2.5 mm².

Gold-plated contacts and stainless steel variants ensure long mechanical life at low contact resistances, especially for use in industrial environments.

Special versions available
Users who require 7/8” technology for installation in device enclosures can choose from Binder’s flange connectors with different thread designs. On the termination side there is a selection of pre-assembled leads of various lengths as well as dip solder contacts for mounting on a printed circuit board.

The binder portfolio also extends to products for the CAN-based DeviceNet fieldbus – including smart additions such as the 870 series T distributors in various pin counts, which are capable of powering two loads simultaneously at from a single source.


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Alan A. Seibert