Phoenix Contact D-UDK 4 Terminal Block End Cover

Technical Overview

Gray PA 6.6 end cover for DIN rail terminal blocks, UL 94 V0 rated, operating from -60 °C to 110 °C.

Key Features

Designed to close and protect the ends of DIN rail-mounted terminal block assemblies.
Molded from Polyamide nylon (PA 6.6) material.
Color: Gray (RAL 7042).
UL 94 V0 flammability rating for high inherent flame resistance.
Extremely wide operating temperature range: -60 °C to 110 °C.
DIN EN 45545-2 certified (R22, R23, R24, R26 HL 1 - HL 3) for rail vehicle electrical systems.
NFPA 130 compliant for surface flammability, smoke density, and smoke gas toxicity.
RoHS and REACH compliant.
Technical compatibility with UDK 3, UDK 4, UDK 4-MTK-P/P, UDK 4-DUR, UDK 4-ULA 24 RD/O-U, UDK 4-ILA 500 terminal blocks.

Technical Specification Matrix

Parameter	Value
Product Type	End cover
Material	PA 6.6 (Polyamide nylon)
Color	Gray (RAL 7042)
Flammability Rating	UL 94 V0
Operating Temperature	-60 °C to 110 °C
Storage/Transport Temperature	-25 °C to 60 °C (for a short time, not exceeding 24 h, -60 °C to +70 °C)
Assembly Temperature	-5 °C to 70 °C
Permissible Humidity (Operation)	20 % to 90 %
Permissible Humidity (Storage/Transport)	30 % to 70 %
Temperature Index of Insulation Material (DIN EN 60216-1 / UL 746 B)	130 °C
Fire Protection for Rail Vehicles (DIN EN 45545-2)	R22, R23, R24, R26 HL 1 - HL 3
Surface Flammability	NFPA 130 (ASTM E 162) passed
Specific Optical Density of Smoke	NFPA 130 (ASTM E 662) passed
Smoke Gas Toxicity	NFPA 130 (SMP 800C) passed
RoHS Compliance	Compliant
REACH SVHC	No substance above 0.1 wt%
Physical Weight (kg)	0
Dimensions L x W x H (cm)	6.35 x 0.15 x 3.59

Industrial Applications

1. Rail Vehicle Electrical Systems

This end cover is ideal for securing and terminating terminal block rows within rail vehicle electrical systems. Its adherence to stringent fire protection standards ensures operational safety and reliability in transit applications.

Problem Solved

Provides essential fire protection and compliance with international railway standards (DIN EN 45545-2 and NFPA 130), preventing fire spread, reducing smoke density, and mitigating toxic gas release in electrical installations within trains and other rail vehicles.

DIN EN 45545-2NFPA 130UL 94 V0Fire ProtectionElectrical Safety

2. Industrial Control Cabinets in Extreme Environments

The D-UDK 4 end cover is perfectly suited for sealing DIN rail-mounted terminal blocks in industrial control cabinets exposed to wide temperature fluctuations, ensuring robust protection and system integrity.

Problem Solved

Effectively protects terminal block assemblies from environmental factors and enhances safety in harsh industrial settings. Its -60 °C to 110 °C operating temperature range and UL 94 V0 flammability rating maintain performance and safety even under extreme thermal stress and potential fire hazards.

Industrial AutomationExtreme TemperatureUL 94 V0Control CabinetTerminal Protection

3. Machine Building and Automation Equipment

Utilize this end cover in machine building and automation equipment to provide a professional, safe, and compact finish to DIN rail terminal block installations, improving both aesthetics and protective functionality.

Problem Solved

Offers a durable, flame-retardant, and space-saving solution for enclosing and insulating terminal block rows, contributing to a clean and safe wiring environment. Its compact design (1.5 mm width) allows for high-density applications in automated machinery, preventing accidental contact and short circuits.

Machine BuildingAutomationDIN RailPA 6.6Compact DesignElectrical Enclosure