Name: Weidmuller WDU 4 Feed-Through Terminal Block - INOSAKI
SKU: Weidmuller-1020100000
Price: 0.52 USD
Availability: InStock

Technical Overview

The Weidmüller WDU 4 (Part Number: 1020100000) is a high-reliability feed-through terminal block from the W-Series, designed for robust electrical connectivity in industrial environments. Featuring a proven screw connection mechanism, this component accommodates a rated cross-section of 4 mm² and supports a rated voltage of 800 V with a continuous current capacity of 32 A (IEC). Constructed from Wemid insulating material, it offers superior thermal stability with a continuous operating temperature range of -60 °C to 130 °C and a UL 94 flammability rating of V-0. The compact 6.1 mm width and snap-on mounting for TS 35 DIN rails make it ideal for space-constrained control cabinets.

Key Features

W-Series Feed-through terminal block
Screw connection technology with patented clamping yoke
Wemid insulating material (thermally stable up to 130°C)
Vibration-proof and maintenance-free connection
Snap-on mounting for TS 35 DIN rail
Dark beige color for standard circuit identification
Supports cross-connection for potential distribution
Explosion-tested version 'Ex e' available

Technical Specification Matrix

Technical Parameter	Specification
Version	Feed-through terminal block
Connection type	Screw connection
Number of connections	2
Number of levels	1
Number of potentials	1
Mounting rail	TS 35
Material	Wemid
Color	dark beige
UL 94 flammability rating	V-0
Rated cross-section	4 mm²
Rated voltage	800 V
Rated current	32 A
Current at maximum wires	41 A
Rated impulse withstand voltage	8 kV
Volume resistance	1 mΩ
Power loss in accordance with IEC 60947-7-x	1.02 W
Pollution severity	3
Surge voltage category	III
Insulating material group	I
Depth including DIN rail	47 mm
Storage temperature	-25 °C...55 °C
Continuous operating temperature, min.	-60 °C
Continuous operating temperature, max.	130 °C
Stripping length	10 mm
Tightening torque, min.	0.5 Nm
Tightening torque, max.	1 Nm
Clamping range, min.	0.13 mm²
Clamping range, max.	6 mm²
Wire connection cross section, solid, min.	0.5 mm²
Wire connection cross section, solid, max.	6 mm²
Wire connection cross section, stranded, min.	1.5 mm²
Wire connection cross section, stranded, max.	6 mm²
Wire connection cross section, finely stranded, min.	0.5 mm²
Wire connection cross section, finely stranded, max.	6 mm²
Wire connection cross section, finely stranded with wire-end ferrules DIN 46228/1, min.	0.5 mm²
Wire connection cross section, finely stranded with wire-end ferrules DIN 46228/1, max.	4 mm²
Wire connection cross section AWG, min.	AWG 26
Wire connection cross section AWG, max.	AWG 10
CSA Certificate No.	200039-1057876
CSA Voltage	600 V
CSA Current	35 A
CSA Wire cross section min.	26 AWG
CSA Wire cross section max.	10 AWG
UL Certificate No.	E60693
UL Voltage	600 V
UL Current	35 A
UL Wire cross section min.	26 AWG
UL Wire cross section max.	10 AWG
Width	6.1 mm
Height	60 mm
Depth	46.5 mm
Blade size	0.6 x 3.5 mm
Net weight	9.57 g

Industrial Applications

1. High-Density Control Cabinet Marshalling

Utilized in large-scale industrial automation panels to organize and bridge control signals between PLCs and field devices.

Problem Solved

Resolves space constraints in crowded cabinets with its compact 6.1mm width while ensuring secure, vibration-resistant screw connections for critical signal paths.

Signal marshallingDIN rail mountingVibration resistanceSpace-saving design

2. Heavy-Duty Power Distribution for Machinery

Deployed in packaging and processing machinery to distribute power to motors, heaters, and actuators requiring up to 32 A.

Problem Solved

Provides a robust, touch-safe power interface that withstands high thermal loads (up to 130°C) and mechanical stress, preventing connection failures in dynamic machine environments.

Power distributionThermal stabilityHigh current capacityWemid insulation

3. Process Industry Field Wiring Interfaces

Acts as a reliable junction point for sensor and actuator cabling in harsh process environments, including potential explosive atmospheres (ATEX/IECEx certified versions available).

Problem Solved

Ensures long-term connection integrity in environments with wide temperature fluctuations (-60°C to 130°C) and aggressive industrial conditions.

Harsh environmentsWide temperature rangeCorrosion resistanceField wiring