Weidmuller WDK 2.5 Double-Level Feed-Through Terminal Block

$ 1.64

Total:

Space-saving double-tier terminal block with 4 clamping points. Supports 0.05-4 mm² conductors. Durable Wemid material with UL 94 V-0 flammability rating.

SKU Weidmuller-1021500000 Category
MOQ: 100 pcs   >>   Order in multiples of 100
Industrial > Electrical Components > Terminal Blocks > Feed-Through Terminal Blocks

Weidmüller WDK 2.5 Double-Level Feed-Through Terminal Block

Model Identifier WDK 2.5
Official Part Number 1021500000
GTIN Standard 4008190169527

Technical Overview

The Weidmüller WDK 2.5 is a modular, double-tier feed-through terminal block designed for high-density wiring on TS 35 DIN rails. Utilizing the robust W-Series screw connection technology, it ensures secure, vibration-resistant electrical contact for conductors up to 4 mm². The unit features two independent levels to double wiring density within a compact 5.1 mm width. Constructed from Wemid thermoplastic, the block offers exceptional thermal stability (up to 130°C) and a UL 94 V-0 flammability rating, making it suitable for demanding industrial environments requiring 400 V / 24 A power and signal distribution.

Key Features

  • Double-level design doubles wiring density on standard TS 35 rails
  • W-Series screw connection technology for maintenance-free, vibration-proof contact
  • Constructed from Wemid insulation material (CTI > 600, 130°C continuous operation)
  • UL 94 V-0 flammability rating for high safety standards
  • Supports conductor cross-sections from 0.05 mm² to 4 mm²
  • Modular system compatible with pluggable cross-connections (ZQV)
  • Certified for hazardous areas (ATEX and IECEx approvals available)

Rated Voltage: 400 V, Rated Current: 24 A (32 A max load)

Technical Specification Matrix

Technical ParameterSpecification
TypeWDK 2.5
Order No.1021500000
VersionFeed-through terminal, Double-tier, Screw connection
Depth (w/ TS 35)63 mm
MaterialWemid
ColorDark beige
Operating Temperature-60 °C ... 130 °C
Rated Voltage400 V
Rated Current24 A
Current at Max. Conductor32 A
Rated Cross-Section2.5 mm²
Rated Impulse Withstand Voltage6 kV
Volume Resistance2.66 mΩ
Connection MethodScrew connection
Stripping Length10 mm
Clamping ScrewM 2.5
Tightening Torque0.4 ... 0.6 Nm
Clamping Range, Min.0.05 mm²
Clamping Range, Max.4 mm²
Wire Connection Cross Section AWGAWG 30 ... AWG 12
Mounting RailTS 35
Pollution Severity3
Number of Levels2
Number of Clamping Points4
Width5.1 mm
Height69.5 mm
Depth62.5 mm
Blade Size0.6 x 3.5 mm
Net Weight12.03 g

Industrial Applications

1. High-Density Control Cabinet Optimization

Implementation in space-constrained control panels where DIN rail real estate is at a premium. The double-tier architecture allows two separate potentials to be wired within a single 5.1 mm wide housing.

Problem Solved

Overcomes physical space limitations in retrofit or compact enclosures by stacking connections vertically rather than horizontally, effectively halving the required rail length.

Double-tier architectureRail space optimization5.1 mm pitchVertical stacking

2. Field Sensor Signal Marshalling

Deployed as an interface point for high-volume sensor wiring, utilizing the upper and lower levels to separate signal and return paths or different voltage potentials in marshalling racks.

Problem Solved

Eliminates wiring clutter and cross-interference by logically separating signal types vertically, simplifying troubleshooting and maintenance in complex I/O systems.

Signal marshallingPotential separationI/O interfacingStructured wiring

3. Vibration-Proof Power Distribution

Used to distribute auxiliary power (up to 400V/24A) to field actuators in heavy machinery environments subject to mechanical vibration.

Problem Solved

Prevents connection loosening and intermittent faults in harsh environments through the use of self-locking steel clamping yokes and screw connections.

Vibration resistanceSteel clamping yokeAuxiliary power distributionReliable contact

[Download-Datasheet]

Select your currency