Technical Overview

Feed-through terminal block featuring robust screw connection technology, specifically designed for reliable electrical connectivity in demanding industrial environments. Constructed from dark beige Wemid material, this unit is rated for 800V and 24A (IEC), supporting wire cross-sections up to 2.5 mm². It offers vibration-resistant connections and high thermal stability.

Key Features

Klippon® Connect with clamping yoke technology for high contact reliability
Optimized for 2.5 mm² wire cross-sections with a pitch of 5.1 mm
High continuous operating temperature range of -60 °C to 130 °C
Robust Wemid insulating material with UL 94 V-0 flammability rating
Certified for explosion-risk environments (ATEX/IECEx)
Modular design suitable for TS 35 mounting rails
Vibration-resistant screw connection ensures permanent gas-tight contact

Technical Specification Matrix

Technical Parameter	Specification
Version	Feed-through terminal block, Screw connection, dark beige, 2.5 mm², 24 A, 800 V
Order No.	1020000000
Type	WDU 2.5
Depth including DIN rail	47 mm
Storage temperature	-25 °C...55 °C
Continuous operating temp., min.	-60 °C
Continuous operating temp., max.	130 °C
Material	Wemid
Colour	dark beige
UL 94 flammability rating	V-0
Certificate No. (ATEX)	DEMKO14ATEX1338U
Certificate No. (IECEX)	IECEXULD14.0005U
Max. voltage (ATEX)	550 V
Current (ATEX)	24 A
Wire cross section max. (ATEX)	2.5 mm²
Rated cross-section	2.5 mm²
Rated voltage	800 V
Rated current	24 A
Current at max. conductor	32 A
Standards	IEC 60947-7-1
Volume resistance according to IEC 60947-7-x	1.33 mΩ
Rated impulse withstand voltage	8 kV
Pollution severity	3
Type of connection	Screw connection
Stripping length	10 mm
Tightening torque, min.	0.4 Nm
Tightening torque, max.	0.8 Nm
Clamping range, min.	0.05 mm²
Clamping range, max.	4 mm²
Wire connection cross section AWG, min.	AWG 30
Wire connection cross section AWG, max.	AWG 12
Solid, min. H05(07) V-U	0.5 mm²
Solid, max. H05(07) V-U	4 mm²
Flexible, min. H05(07) V-K	0.5 mm²
Flexible, max. H05(07) V-K	4 mm²
Flexible with ferrule, min. (DIN 46228/1)	0.5 mm²
Flexible with ferrule, max. (DIN 46228/1)	2.5 mm²
RoHS Compliance Status	Compliant without exemption
Width	5.1 mm
Height	60 mm
Depth	46.5 mm
Voltage size B (UR)	600 V
Current size B (UR)	25 A
Voltage size C (CSA)	600 V
Current size C (CSA)	20 A
Net weight	7.59 g

Industrial Applications

1. High-Density Control Cabinet Marshalling

Functions as the primary interface node between external field wiring and internal control logic within space-constrained control cabinets.

Problem Solved

Provides secure, organized, and vibration-resistant wire termination in high-density layouts (5.1mm width), preventing signal intermittency and maximizing rail space utilization.

DIN Rail MountingScrew ConnectionSignal IntegritySpace Optimization

2. Power Distribution in Industrial Machinery

Facilitates the safe distribution of power and control signals across complex machinery sub-systems and automation cells.

Problem Solved

Ensures safe electrical isolation and reliable current transfer up to 24A/800V, minimizing the risk of short circuits and maintaining continuity under mechanical vibration.

Current Rating 24AVoltage Rating 800VLoad DistributionWemid Insulation

3. Hazardous Area Signal Routing

Aggregates and routes sensor/actuator signals in harsh process environments requiring explosion protection compliance.

Problem Solved

Withstands extreme temperatures (-60°C to 130°C) and meets ATEX/IECEx standards, ensuring operational stability and safety in potentially explosive atmospheres.

Temperature ResistanceATEX CertificationIECEx ComplianceCorrosion Resistance

Weidmuller WDU 2.5 Feed-Through Terminal Block

Weidmüller WDU 2.5 Feed-Through Terminal Block

Technical Overview

Key Features

Technical Specification Matrix

Industrial Applications

1. High-Density Control Cabinet Marshalling

2. Power Distribution in Industrial Machinery

3. Hazardous Area Signal Routing