When it comes to connecting wires together, you can't make a better choice than Weidmuller's DIN-rail mounted terminal blocks. Select from the icons below to see the full features and benefits of each clamping technology.
Screw Connection
Optimum contact ensured through the patented and renowned clamping yoke system which is based on the classical increase of force of the screw. Requring only small effort, the screw thread produces high contact power.
W-Series
The W-series offers products for cross-sections ranging from 0.05 to 300mm² for all major applications (connecting, protecting, disconnecting, measuring....).
Weidmüller's screw clamp terminals in the W-series have a long history of setting the standard for functional perfection down to the very last detail. The combination of many advantages today remains unsurpassed and gives the W-series a unique lead on the market.
The W-series offers solutions for conductor cross-sections from 0.05 to 300 mm² and for all common electrical functions.
One unique feature is the pluggable cross-connector (ZQV) for most terminals with cross-sections 2.5 and 4 mm². It brings considerable time savings compared to all other screw terminals on the market.
Thanks to the patented design of Weidmüller's screw connection (screw clamp) it is possible for two conductors of the same cross-section to be connected in one and the same clamping point without difficulty.
Design
W-standard Same contour design from 2.5 to 10 mm² Conductor sizes from 0.05 to 300 mm² Large clamping capacity range
W-compact Smaller size Identified by an "N" in the type designation Conductor sizes from 0.05 to 150 mm²
The connection Separation of electrical and mechanical function: Clamping unit of hardened steel for very high contact force Busbar of copper for low voltage loss. Tin-plated surface for minimum contact resistances.
Simple to use Snap on and off at right angles to the mounting rail in both directions Integrated idle point when loosening the terminal screws – important for mechanical screwdrivers Screwdriver guided by countersinking of clamping screws All parts captive in the terminal Many different options for labelling
Wemid insulating material Resistant to creep current CTI 600 Temperature resistant to 120°C Combustibility class V0 to UL94 Contains no halogen or phosphorous
Cross-connections, also pluggable Screw-in or pluggable cross-connections Pluggable cross-connection provides great time savings Standard cross-connections for 2.5 and 4 mm² for up to 10 poles Pluggable cross-connections available for up to 50 poles
Same contours Identical size from 2.5 to 10 mm² Small number of different accessory parts Easier project planning
Safe contacts Elastic tension clamp offsets conductor changes caused by fluctuating temperatures (prevents working loose) No maintenance: no need to retighten the clamping screw Vibration-proof connection: many W-terminals certified for railway use to EN 61373 Highest contact force of all connection systems
Safe use Shock protection with connected conductors, even with cross-connection Terminals supplied with open clamping point. Misplugging safeguard prevents conductors from being inserted incorrectly Embossing on tension clamp and busbar engage to reliably clamp small conductors Large conductors and also 2 conductors are gripped in the middle.
Standards The high contact safety and reliability of Weidmüller’s systems is verified by: Type-testing to IEC 60947-7-1/-2 National and international approvals Large portfolio with UL and CSA approvals W-series qualified to railway standards ATEX approval
SAK-Series
SAK Modular Terminal Blocks
Synonymous with reliable connections and product variety.
Advantages: Separation of electrical and mechanical functions: - steel clamping yoke for the mechanical function - copper busbar for the electrical function Maintenance-free and vibration-proof screw connection Low voltage drop and gas-tight contact point High contact forces, not reliant on the cross-section Three different clip-on foot designs available Various insulation materials
Large range of specialty terminals with diverse connection systems Large range of accessories available
Same contour design from 2.5 to 10 mm² 
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