Phoenix Contact D-ST 4 Gray Terminal Block End Cover

Technical Overview

Gray polyamide end cover, 2.2mm width, for terminal blocks. Operates from -60°C to 110°C, UL 94 V0, and DIN EN 45545-2 certified for rail applications.

Key Features

Slim 2.2 mm width minimizes space consumption along the terminal row.
UL 94 V0 rated polyamide body for reliable fire resistance.
Certified to DIN EN 45545-2 (R22, R23, R24, R26, HL 1 - HL 3) for rail vehicle applications.
EU RoHS compliant and free of REACH SVHC substances above 0.1 wt%.
Compliant with NFPA 130 for surface flammability, specific optical density of smoke, and smoke gas toxicity.

Technical Specification Matrix

Parameter	Value
Material	Polyamide (PA)
Color	Gray (RAL 7042)
Operating Temperature	-60 °C to 110 °C
Storage/Transport Temperature	-25 °C to 60 °C (short-term -60 °C to +70 °C)
Assembly Temperature	-5 °C to 70 °C
Permissible Humidity (Operation)	20% to 90%
Flammability Rating	UL 94 V0
Relative Insulation Material Temperature Index (UL 746 B)	130 °C
Fire Protection for Rail Vehicles (DIN EN 45545-2)	R22, R23, R24, R26, HL 1 - HL 3
NFPA 130 Compliance	Surface flammability (ASTM E 162), Specific optical density of smoke (ASTM E 662), Smoke gas toxicity (SMP 800C) - passed
RoHS Compliance	Fulfills EU RoHS substance requirements (Yes, No exemptions)
Physical Weight (kg)	0
Dimensions L x W x H (cm)	5.59 x 0.22 x 2.9

Industrial Applications

1. Industrial Control Panels in Harsh Environments

This end cover is ideal for securing and insulating terminal block assemblies in industrial control panels subjected to significant temperature fluctuations, such as outdoor cabinets or unconditioned factory floors.

Problem Solved

Provides robust electrical insulation and fire safety, maintaining structural integrity and preventing hazards even in extreme ambient temperatures ranging from -60°C to 110°C, supported by its UL 94 V0 flammability rating.

Temperature extremesUL 94 V0Industrial controlElectrical insulationFire safety

2. Railway and Rolling Stock Control Systems

Suitable for use in railway and rolling stock control systems where stringent fire protection and material standards are critical for operational safety.

Problem Solved

Meets rigorous safety mandates for rail vehicles, being certified to DIN EN 45545-2 (HL 1 - HL 3) for fire protection and compliant with NFPA 130 standards for surface flammability, smoke density, and smoke toxicity.

Rail vehiclesDIN EN 45545-2NFPA 130Fire protectionRolling stock

3. Space-Constrained Electrical Enclosures

Designed for neat and safe termination of terminal block rows in compact electrical enclosures where efficient use of every millimeter of space is essential.

Problem Solved

Its slim 2.2 mm width minimizes footprint, enabling higher wiring density and optimizing panel space without compromising safety or critical insulation, crucial in densely packed installations.

Compact enclosuresSpace-savingSlim designWiring densityElectrical safety