Screw terminal blocks – selos WTN
selos WTN screw terminal blocks provide a versatile cage-clamp screw connection for a wide range of conductor types and control-cabinet applications. The coordinated portfolio includes feed-through, protective earth, multi-tier, high-current, installation, disconnect, functional and distribution terminal blocks for reliable, service-friendly wiring.
RELIABLE, VERSATILE AND PROVEN – WORLDWIDE!
As a trusted expert in terminal block technology, Wieland continues to set standards for reliable electrical connections. The SELOS WTN screw terminal blocks combine a proven screw-connection system with a robust clamping yoke design, thereby ensuring maximum reliability for all wire types and applications.
The result: durable connections, universal compatibility, and long-term stability—even under demanding conditions. With a comprehensive range that includes grounding, multi-conductor, disconnect, and fuse terminal blocks, WTN offers a globally proven solution for versatile industrial and building installations.
OTHER CONNECTION OPTIONS
• Multi-wire connection
• Connection with or without ferrules
RELIABLE AND MAINTENANCE-FREE
- Universal screw head for slotted or Phillips screwdrivers
- Vibration-resistant clamping design
TIME-SAVING INSTALLATION
- Screwless snap-on
PE terminal blocks
selos WTN terminal blocks with screw connection
Reliable connection, proven concept! selos WTN with proven screw connection—valued by professionals for many years and in millions of installations worldwide. This new series combines the classic screw connection with modern advancements such as a universal screw head (slotted and Phillips), plug-in bridges, planning and design software, marking systems, and much more.
- 2-, 3-, or 4-pole (common) feed-through and protective earth terminal blocks
- 2- or 3-tier, multi-level terminal blocks
- Terminal blocks for fuses, knife switches, and current transformers
- Terminal blocks with special functions—sensor element, diode, pluggable, mini, and more
- Compact and uniform design with optimized accessories
- Supported conductors from 0.14 mm² to 240 mm² / 26 AWG to 500 kcmil up to 380 amperes
TECHNICAL DATA
| Parameter | Value |
|---|---|
| Conductor cross-section | 1.5 mm² up to 240 mm² |
| Rated current | up to 415 A IEC / 370 A UL |
| Rated voltage | up to 1000 V IEC / 600 V UL |
WTN 2.5 mm² – screw terminal block
Compact design with 5.1 mm pitch, 24 A / 1000 V, robust screw-connection technology.
- Nominal cross section: 2.5 mm²
- Rated current: 24 A
- Rated voltage: 1000 V
- Width (pitch): 5.1 mm
TECHNICAL DATA
Electrical data
Connection & conductor range
Mechanics & design
Application & standards
SELOS WTN TERMINAL BLOCKS
– TECHNICAL RANGE AT A GLANCE
The WTN range offers a wide selection of terminal blocks, complemented by a comprehensive accessories program. This enables tailored, space-saving wiring solutions for every application—from standard configurations to highly customized installations.
FEED-THROUGH TERMINAL BLOCKS
Reliable connection of conductors – in Push-in (WTPN) or screw version (WTN).
MULTI-CONDUCTOR TERMINAL BLOCKS
Efficient wiring of multiple conductors in one of the terminals – for flexible circuit configurations.
FUNCTION TERMINAL BLOCKS
For extended applications such as diode, resistor, or isolating functions.
FUSE TERMINAL BLOCKS
Simple protection of circuits with pluggable fuse inserts.
GROUND TERMINAL BLOCKS
Safe grounding – with automatic PE connection when snapping onto the mounting rail.
TERMINAL BLOCKS WITH RING LUG CONNECTION
For conductors with ring or fork cable lugs – robust connection technology for high currents.
HIGH-CURRENT TERMINAL BLOCKS
High-performance connections for cross-sections up to 240 mm² – ideal for power distribution.
KNIFE EDGE DISCONNECT TERMINAL BLOCKS
Ideal for testing, measuring, and maintenance work thanks to integrated disconnect knives.
MULTI-TIER TERMINAL BLOCKS
Compact multi-tier terminal blocks for maximum wiring density in the smallest space.
MINI TERMINAL BLOCKS (TS 15)
Perfect for confined spaces and small distributors – can be mounted on TS 15 mounting rail.
PLUGGABLE TERMINAL BLOCKS
Pluggable variants for modular applications and quick interchangeability.
WHY SHOULD YOU CHOOSE WTN TERMINAL BLOCKS?
COMPLETE RANGE WITH GROUNDING BLOCKS AND MULTIPLE CONNECTION POINTS
- With a complete range of terminal blocks, all users can configure and assemble the terminal strips that are best suited for their application.
- In addition to flexibility in the configuration of the terminal strips, the multiple connection also enables an expansion of the connection points none additional costs for accessories or for a change of the original configuration of the terminal blocks.
KNIFE-EDGE DISCONNECT BLOCKS AND
FUSE BLOCKS
- For some applications with unstable current levels in the control loop, DIN rail terminal blocks with fuses may be the best solution to protect the machine from unexpected power surges and thus save maintenance costs.
- Knife-edge disconnect blocks also help users control voltage/current during operating cycles in control panels.
SPECIAL FUNCTION BLOCKS
- Some specific tasks in control panels require special functional terminal blocks.
- Those tasks may require different combinations at one connection point, including LEDs and/or resistors. This helps reduce wiring costs and save space in the control panel.
- Likewise, combined terminal blocks with several tiers and a ground function in one housing lead to overall cost and space savings.
REDUCTION JUMPERS
- With these jumpers, you can distribute signals or power to smaller terminals and vice versa easily without using a separate terminal, e.g., from 10 mm² to a 4 mm² terminal and from there to other 4 mm² terminals using the standard jumpers
- The biggest advantage is high flexibility due to the wide variety of different reduction jumpers
Ideal for every wiring task
in the control cabinet
From signal routing to power distribution – WTN terminal blocks provide reliable, tool-free connections at all cabinet levels.
- Signal wiring – Secure and maintenance-free connections for system signals.
- Sensor/actuator wiring – Reliable integration of field devices into automation environments.
- Standard wiring – Universal solution for intra-cabinet connections.
- Power distribution – Compact design enables efficient power distribution.
- Power feed-in – Tool-free connections reduce installation time.
SMART CONNECTIVITY STARTS HERE
– THE FUTURE-PROOF ECOSYSTEM FOR TERMINAL BLOCKS
The WTN series is part of our modernized, digitized ecosystem and offers:
SIMPLIFY YOUR PLANNING WITH SELOS PLAN
Our intuitive planning tool selos PLAN optimizes every step of your configuration and project planning. With a product-based user interface, it provides a clear, visual representation of your DIN-rail assembly.
MARKING MADE EASY WITH SELOS PRINT
Clean, clear, and accurate marking is essential for a well-organized control cabinet. With our powerful selos PRINT marking system, you can easily create marking labels for terminal strips, labels, and cable markings for every application. Our new continuous marking system also makes the process more cost-effective.
COMPLETE YOUR SETUP WITH SMART ACCESSORIES
From partition plates to test plugs – our extensive accessories portfolio provides you with everything you need for the complete Setup of your terminal strips. All components are designed for compatibility and ease of use, ensuring a tidy structure, reliable power, and simplified maintenance throughout the entire product life cycle.