The Beckhoff KL2612 Bus Terminal is a compact and versatile relay output module designed to switch AC and DC signals directly within Beckhoff’s modular I/O platform. Featuring two independent relay change-over contacts, it provides flexible switching capabilities for a wide range of automation tasks, from controlling small actuators to switching auxiliary circuits in process and building automation.

Each channel of the KL2612 supports nominal voltages up to 125 V AC or 30 V DC, making it suitable for both alternating and direct current applications. With a maximum ohmic switching current of 0.5 A for AC and 2 A for DC, the terminal is particularly effective for small-load switching. Typical applications include driving signal lamps, small relays, solenoids, or auxiliary equipment that operates within these ranges.

The use of change-over relay contacts adds flexibility by allowing both normally-open and normally-closed switching configurations, depending on the application’s requirements. This feature makes the KL2612 adaptable for tasks such as safety circuits, feedback control, or general-purpose switching, where contact flexibility is an advantage.

Although compact, the KL2612 is designed for robust and reliable operation. Its mechanical relays provide galvanic isolation between the control side and the output side, ensuring safe and dependable separation of signals. This isolation enhances system safety and reduces the risk of electrical interference affecting sensitive control circuits.

As part of the Beckhoff Bus Terminal system, the KL2612 is powered and controlled via the K-bus, allowing for seamless integration into modular automation architectures. It can be combined with digital inputs, analogue modules, and specialised terminals to build scalable and tailored I/O solutions. Its narrow housing conserves valuable cabinet space, supporting high-density installations without sacrificing performance.

The KL2612 is well suited for applications in building automation, where it can control lighting circuits, shutters, or auxiliary devices, and in industrial automation, where it may switch signals for low-power actuators, sensors, or status indicators. Its moderate current handling capability makes it best suited for control-level tasks rather than high-power switching.

In summary, the Beckhoff KL2612 Bus Terminal delivers reliable and flexible relay-based switching for low to medium-voltage applications. With two change-over contacts, support for both AC and DC circuits, robust isolation, and seamless integration into Beckhoff’s modular I/O platform, it provides engineers with a compact and dependable solution for diverse switching requirements.