In the fast-paced world of industrial automation, choosing the right relay can make all the difference in achieving reliability, flexibility, and space efficiency. That’s where the Weidmüller TERMseries relay steps in. Known as “The All-Rounder” in the Klippon Relay portfolio, this series offers a universal, compact, and powerful solution for control applications across various industries.
The TERMseries is designed to meet the needs of modern control cabinet design. Whether dealing with limited space, multi-voltage inputs, or frequent module changes, this relay series is built to perform. It supports a wide range of AC/DC input voltages, offers tool-free wiring options, and includes pluggable modules for fast replacement and easy maintenance.
TERMSERIES relay modules and solid-state relays are true all-rounders within the extensive Klippon® Relay portfolio by Weidmüller. Designed for flexibility, ease of use, and compact performance, these pluggable modules come in various variants and are ideal for modular system applications. Thanks to their quick exchange capability, space-saving widths starting at just 6.4 mm, and extensive accessory options, the TERMSERIES sets a new standard in relay technology.
Each module is equipped with a large, illuminated ejection lever that functions as both a status LED and a marker holder, significantly simplifying maintenance and status identification. Whether you're building control panels or maintaining automation systems, the TERMSERIES delivers reliable switching, wide-ranging compatibility, and time-saving features.
Enjoy unlimited cross-connection possibilities thanks to the innovative multi-voltage input and flexible connection options, including PUSH IN, screw, and tension clamp terminals. This gives you maximum compatibility across a wide range of applications.
Save valuable space without sacrificing performance. Choose from a wide range of interfaces and solid-state relay variants, all featuring a large illuminated status LED for clear visibility even in low-light or complex control panels.
Experience easier and safer installation with the high-quality, edge-free housing that minimizes injury risks. Connection markings are designed for excellent readability, even in tight or angled mounting positions, making setup and maintenance more efficient.
The TERMSERIES relay modules now feature a manually lockable test button, enabling fast and straightforward simulation of input and output signals. This function supports step-by-step testing during commissioning and maintenance, making it ideal for service teams. The bright orange test button is easy to identify and operate, enhancing both safety and efficiency. Fully compatible with existing TERMSERIES accessories, these modules can be seamlessly expanded with interface adapters, cross-connections, and partition plates.
Installation speed is crucial in industrial settings. The PUSH IN connection system of the TERMSERIES significantly reduces wiring time while improving reliability. Color-coded pushers help prevent wiring mistakes, and each terminal features an integrated test point for fast troubleshooting. Thanks to the built-in cross-connection feature, each socket can be connected to any potential with minimal effort—making panel assembly quicker and more streamlined.
One of the most powerful features of the TERMSERIES is its unique multi-voltage input, which supports a broad range from 24 to 230 V UC. This eliminates the need for multiple relay variants, reducing inventory costs and simplifying project planning. Whether used in new plant construction or retrofit projects, these relays are universally adaptable to diverse power systems and automation solutions around the world.
For applications requiring functional safety, TERMSERIES relay modules are available with positively driven (forcibly guided) contacts. This design ensures that the contact status is always known and verified, making the modules ideal for reliable signal monitoring in safety-related systems. These components are a trusted choice in environments where secure switching performance is critical.
The TERMSERIES also offers integrated multifunction timing relays, designed to enhance performance in high-speed automation systems. These relays extend short pulses to ensure accurate detection by downstream components, effectively compensating for fast signal changes. By combining relay switching with time-based control, the TERMSERIES supports more precise and stable automation workflows.
1. Compact and Modular Design
TERMSERIES relays are available in slim widths of 6.4 mm and 12.8 mm, allowing for space-saving installation in control cabinets. Their modular design facilitates easy expansion and customization to suit specific application requirements.
2. Enhanced Connectivity Options
The relay modules support various connection technologies, including PUSH IN, screw, and tension clamp terminals, providing flexibility to match different wiring preferences and standards.
3. Integrated Test Button for Maintenance
Select TERMSERIES models come equipped with a manually lockable test button, enabling straightforward simulation of input and output signals during commissioning and maintenance. This feature enhances operational efficiency by allowing step-by-step system testing without the need for external tools.
4. Ejection Lever as Status Indicator
The TERMSERIES is a unique multi-voltage input is a standout feature, accommodating a wide range of control voltages from 24 V to 230 V AC/DC. This versatility reduces the need for multiple relay types, simplifying inventory management and system design.
5. Comprehensive Accessory Compatibility
TERMSERIES relays are compatible with a wide range of accessories, such as interface adapters, cross-connections, and partition plates, facilitating seamless integration into existing systems and enhancing overall functionality.
The Weidmüller TERMSERIES Electromechanical Relays are true all-rounders, offering a compact, modular design starting from just 6 mm in width. Built for versatility, these relay modules come with a wide selection of variants, including 1 and 2 changeover (CO) contacts and 1 normally open (NO) contact, giving users flexibility in circuit design. A standout feature is the unique multi-voltage input, which supports a wide voltage range from 24 to 230 V UC, allowing seamless integration across various applications.
For quick identification, input voltages are color-coded: red for AC, blue for DC, and white for UC (universal current). Optional features like a manual test button add convenience during commissioning and maintenance. Designed with safety and ease of use in mind, the high-quality housing has no sharp edges, reducing the risk of injury during installation. In addition, partition plates are available for optical separation and improved insulation strength, making the relay ideal for tightly packed or high-voltage environments. With unlimited cross-connection possibilities and extensive accessories, these relays offer reliable performance and maximum design flexibility for modern control systems.
In automated machinery, precise and reliable signal switching is critical. The TERMseries relays interface between control systems (like PLCs) and machine components (such as motors, sensors, and actuators). Thanks to their compact size and multi-voltage capability, they simplify integration in control cabinets and enable quick maintenance through pluggable relay modules. This improves uptime and efficiency in automated production lines. For example, controlling conveyor belts, packaging machinery, or robotic arms by switching signals between control devices and power components.
Process industries such as oil & gas, petrochemicals, and food processing require high-reliability components to handle critical signals from sensors and instruments. The TERMseries provides dependable signal isolation and switching, reducing the risk of electrical interference and equipment damage. With test buttons and status indicators, on-site operators can quickly diagnose faults and conduct functional checks. Switching and monitoring temperature, pressure, or flow control signals in distributed control systems (DCS).
Modern buildings rely on intelligent automation for HVAC, lighting, security, and energy systems. TERMseries relays support this by acting as intermediary switches between smart control systems and physical devices like valves, fans, or lights. Their slim design is especially beneficial in space-constrained electrical cabinets in building infrastructure. Controlling lighting zones, access gates, or air handling units via relay output from the central BMS.
The energy sector demands robust and flexible relays for monitoring and controlling power distribution, battery systems, and renewable energy sources. TERMseries relays are ideal due to their wide voltage range, long service life, and ability to handle frequent switching cycles. Connecting solar inverter output signals to grid control systems, or managing switching logic in battery energy storage systems (BESS).
For panel builders and OEMs, the TERMSERIES offers great value by reducing stock complexity and installation time. The modular design, PUSH IN wiring options, and cross-connection accessories make it easy to create neat, scalable, and highly functional panels tailored to specific client needs. Integrating standardized relay banks for I/O signal management in electrical enclosures for industrial customers.
The Weidmüller TERMSERIES relay stands out as a versatile, compact, and reliable solution for modern industrial applications. Its modular design, multi-voltage input, tool-free maintenance features, and broad accessory compatibility make it an indispensable choice for control systems across industries—from machine automation to energy management. Whether you're building high-performance control panels or optimizing existing systems, the TERMSERIES delivers the flexibility, efficiency, and precision needed to meet today's demanding automation standards.
