The Beckhoff EL2624 is a 4-channel relay output EtherCAT Terminal designed for switching AC and DC signals in automation environments. With its four make contacts, wide voltage compatibility, and compact modular design, the EL2624 offers flexible control of auxiliary loads, signal circuits, and low-power devices directly within EtherCAT I/O systems.

Each of the four relay outputs is capable of switching up to 125 V AC or 30 V DC, providing broad applicability across industrial and building automation. The terminal is designed primarily for ohmic loads, making it ideal for controlling resistive devices such as indicator lamps, heaters, or auxiliary circuits. For DC switching, each channel can handle currents of up to 2 A, while AC loads are supported up to 0.5 A per channel. This balance between AC and DC capability ensures that the EL2624 can accommodate both traditional AC circuits and low-voltage DC applications.

A unique strength of the EL2624 is its ability to handle very low minimum loads. With a minimum permitted switching load of 10 µA at 10 mV DC (with intact contact coating), it can reliably switch small signal currents without contact degradation. This feature makes it particularly suitable for sensitive applications such as signal routing, monitoring circuits, or low-power sensor activation, where standard relays may not perform reliably.

Relay technology provides galvanic isolation between the field side and the EtherCAT communication system, ensuring stable and safe operation. This separation protects sensitive control electronics from electrical disturbances on the load side, which is critical in industrial environments with fluctuating voltages or electrical noise.

The EL2624 consumes approximately 200 mA from the E-bus and integrates seamlessly into Beckhoff’s EtherCAT Terminal system. It communicates output status directly to the EtherCAT master, enabling real-time monitoring and deterministic control of connected loads. Its compact modular design saves valuable DIN rail space, making it well suited for high-density installations or projects where multiple relay outputs are required in a confined space.

Practical applications for the EL2624 are numerous. In machine automation, it can control auxiliary relays, lamps, or small solenoids. In building automation, it can manage low-voltage circuits for lighting, HVAC components, or signal systems. In process automation, it provides reliable switching of control circuits, feedback signals, or low-power actuators. Its ability to handle both very small and moderate loads makes it a flexible and dependable choice for a wide range of use cases.

In summary, the Beckhoff EL2624 is a versatile 4-channel relay output terminal that combines compact design with reliable switching performance. Supporting voltages up to 125 V AC and 30 V DC, currents up to 0.5 A AC and 2 A DC, and very low minimum loads, it offers flexibility for controlling both power and signal circuits. With galvanic isolation, short load compatibility, and seamless EtherCAT integration, the EL2624 ensures safe and efficient switching in modern automation systems.