Weidmuller WDU 10 Feed-Through Terminal Block

Technical Overview

The Weidmüller WDU 10 is a high-performance feed-through terminal block featuring a robust screw connection system. Designed for demanding industrial environments, it supports a rated cross-section of 10 mm² and handles currents up to 57 A at 1000 V. The terminal block is constructed from Wemid, a specially formulated thermoplastic that offers superior thermal stability (continuous operating temperature up to 130 °C) and V-0 flammability rating. Its compact design (9.9 mm width) allows for high-density DIN rail mounting, while the clamping yoke technology ensures a vibration-proof, gas-tight connection for solid, stranded, and flexible conductors ranging from 1.31 mm² to 16 mm². It carries comprehensive global approvals including IECEx and ATEX for hazardous locations.

Key Features

Proven screw connection technology (clamping yoke) for maintenance-free reliability
Wemid insulating material offering continuous operating temperature up to 130 °C
V-0 flammability rating according to UL 94 for enhanced safety
High rated voltage of 1000 V IEC (600 V UL/CSA) suitable for modern industrial systems
Wide clamping range accommodating conductors from 1.31 mm² up to 16 mm²
Compact 9.9 mm width optimizes space on standard TS 35 DIN rails
Comprehensive certifications including ATEX, IECEx, UR, and CSA for global use

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
Colour	dark beige
UL 94 flammability rating	V-0
Continuous operating temp., min.	-60 °C
Continuous operating temp., max.	130 °C
Depth including DIN rail	47 mm
Rated cross-section	10 mm²
Rated voltage	1000 V
Rated current	57 A
Current at maximum wires	76 A
Rated impulse withstand voltage	8 kV
Volume resistance according to IEC 60947-7-x	0.56 mΩ
Power loss in accordance with IEC 60947-7-x	1.82 W
Pollution severity	3
Stripping length	12 mm
Tightening torque, min.	1.2 Nm
Tightening torque, max.	1.9 Nm
Clamping range, min.	1.31 mm²
Clamping range, max.	16 mm²
Wire connection cross section AWG, min.	AWG 16
Wire connection cross section AWG, max.	AWG 6
Conductor cross-section, solid, min.	1.5 mm²
Conductor cross-section, solid, max.	16 mm²
Conductor cross-section, stranded, min.	1.5 mm²
Conductor cross-section, stranded, max.	16 mm²
Conductor cross-section, flexible, min.	1.5 mm²
Conductor cross-section, flexible, max.	16 mm²
Conductor cross-section, flexible with ferrule, min.	1.5 mm²
Conductor cross-section, flexible with ferrule, max.	16 mm²
Clamping screw	M 4
Gauge to IEC 60947-1	B6
Certificate No. (ATEX)	DEMKO14ATEX1338U
Certificate No. (IECEX)	IECEXULD14.0005U
Certificate No. (UR)	E60693
Wire cross section max. (CSA)	6 AWG
Wire cross section min. (CSA)	18 AWG
Width	9.9 mm
Height	60 mm
Depth	46.5 mm
Blade size	1.0 x 5.5 mm
Voltage size C (CSA)	600 V
Current size C (CSA)	65 A
Voltage size C (UR)	600 V
Current size C (UR)	65 A
Conductor size Factory wiring max. (UR)	6 AWG
Conductor size Factory wiring min. (UR)	18 AWG
Net weight	16.9 g

Industrial Applications

1. Industrial Power Distribution Cabinets

Utilized in main control cabinets to reliably distribute power to medium-duty motors and industrial loads requiring up to 57 A.

Problem Solved

Provides a secure, high-current junction point that withstands thermal stress and vibration, reducing maintenance in heavy-duty environments.

High current distributionThermal stabilityVibration resistanceClamping yoke

2. Renewable Energy Inverter Systems

Applied in solar and wind energy marshalling boxes where high voltage ratings (1000 V) and robust environmental resistance are critical.

Problem Solved

Ensures safe isolation and connection of high-voltage DC/AC lines in outdoor or harsh climate enclosures, compliant with global safety standards.

1000V ratedWemid materialEnvironmental resistanceGlobal approvals

3. Process Automation Marshaling

Deployed in large-scale process automation systems to connect field instruments and actuators to control systems.

Problem Solved

Facilitates organized, high-density wiring with clear marking options and reliable gas-tight connections, preventing signal loss in critical processes.

Gas-tight connectionDIN rail mountingSignal integrityHigh density