Phoenix Contact D-ST 6-TWIN Terminal Block End Cover

Technical Overview

Gray PA end cover for D-ST 6-TWIN terminal blocks. UL 94 V0 rated, -60°C to 110°C operation. Meets DIN EN 45545-2 rail fire standards.

Key Features

Designed specifically for D-ST 6-TWIN feed-through terminal blocks.
Manufactured from high-quality PA (polyamide) material.
Achieves a UL 94 V0 flammability rating.
Operational temperature range from -60 °C to 110 °C.
Complies with rail vehicle fire protection standards (DIN EN 45545-2) R22, R23, R24, R26 at HL 1 - HL 3.
Features a standard gray color for industrial applications.
Provides reliable insulation and mechanical protection for terminal block assemblies.

Technical Specification Matrix

Parameter	Value
Product Type	End cover
Material	PA (Polyamide)
Color	Gray
Flammability rating according to UL 94	V0
Ambient temperature (operation)	-60 °C ... 110 °C
Ambient temperature (storage/transport)	-25 °C ... 60 °C (short-term -60 °C to +70 °C)
Ambient temperature (assembly)	-5 °C ... 70 °C
Ambient temperature (actuation)	-5 °C ... 70 °C
Permissible humidity (operation)	20 % ... 90 %
Permissible humidity (storage/transport)	30 % ... 70 %
Relative insulation material temperature index (Elec., UL 746 B)	130 °C
Fire protection for rail vehicles (DIN EN 45545-2) R22	HL 1 - HL 3
Fire protection for rail vehicles (DIN EN 45545-2) R23	HL 1 - HL 3
Fire protection for rail vehicles (DIN EN 45545-2) R24	HL 1 - HL 3
Fire protection for rail vehicles (DIN EN 45545-2) 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
Physical Weight (kg)	0
Dimensions L x W x H (cm)	9.05 x 0.22 x 4.35

Industrial Applications

1. Railway Systems Electrical Enclosures

This end cover is highly suitable for insulating the ends of terminal block assemblies within electrical control cabinets of railway systems. Its adherence to DIN EN 45545-2 (HL 1 - HL 3 for R22, R23, R24, R26) ensures robust fire safety, which is paramount for protecting passengers and equipment in rail transport.

Problem Solved

Prevents electrical short circuits and significantly enhances fire safety in critical railway electrical installations by providing reliable insulation and meeting stringent international fire protection norms.

DIN EN 45545-2HL 1 - HL 3rail transportelectrical insulationfire safety

2. Industrial Control Panels in Harsh Environments

The end cover is ideal for terminating terminal block rows in industrial control panels that are subjected to wide temperature fluctuations. Its durable PA material and broad operational temperature range of -60 °C to 110 °C ensure stable and reliable performance even in extreme cold or heat, maintaining electrical system integrity.

Problem Solved

Provides durable and reliable insulation for terminal blocks in environments with significant temperature variations, preventing material degradation, ensuring consistent electrical integrity, and minimizing system downtime.

Industrial controlextreme temperaturePA materialelectrical integrityenvironmental resilience

3. Enhanced Safety for Building Automation Wiring

This end cover finds excellent application in building automation systems where stringent fire safety standards are a primary concern. Its UL 94 V0 flammability rating signifies self-extinguishing properties, which effectively reduces the risk of fire propagation within the building's electrical wiring infrastructure.

Problem Solved

Minimizes fire hazards in building electrical installations by providing flame-retardant insulation for terminal blocks, thereby protecting occupants, property, and ensuring compliance with building safety codes.

Building automationUL 94 V0fire resistanceelectrical wiringsafety