Phoenix Contact ST 6-TWIN-PE Ground Terminal Block

Technical Overview

Green-yellow spring-cage ground terminal for 0.2-10mm² (AWG 24-8) conductors, 1000V IEC. Vibration-resistant, DIN rail mount, UL 94 V0.

Key Features

Space-saving design with practical multi-conductor connections.
Tool-less wire installation for quick and easy push-in wiring.
Tested for railway applications (DIN EN 50155) ensuring robustness in dynamic environments.
Low contact resistance and corrosion-free terminal points for reliable performance.
Green-yellow housing for clear and immediate protective earth identification.
Compliant with international standards including IEC, UL, CSA, ATEX, IECEx, EAC, and VDE.
Double function shaft offers versatile distribution and accommodates test accessories.
Flammability rating according to UL 94 V0, suitable for hazardous locations.

Technical Specification Matrix

Parameter	Value
Number of Levels	1
Number of Connections	3
Connection Method	Spring-cage (Push-in)
Nominal Cross Section (Solid/Stranded)	0.2 mm² - 10 mm²
AWG Wire Gauge	24 - 8 AWG
Rated Operating Voltage (IEC)	1000 V
Rated Operating Voltage (UL)	600 V
Rated Impulse Voltage	8 kV
Nominal Current	24 A
Color	Green-yellow
Insulating Material	PA (Polyamide)
Flammability Rating (UL 94)	V0
Mounting Type	DIN rail (NS 35/7,5, NS 35/15)
Stripping Length	12 mm
Operating Temperature	-60 °C to 110 °C
Physical Weight (kg)	0.03
Dimensions L x W x H (cm)	5.1 x 0.82 x 9.05

Industrial Applications

1. Railway Rolling Stock Electrical Grounding

Ensures reliable and safe grounding of electrical equipment in trains, which experience constant vibration and harsh environmental conditions. The green-yellow color coding provides clear safety identification for protective earth circuits.

Problem Solved

Provides a highly reliable and compliant grounding solution in high-vibration railway environments, maintaining system integrity and preventing electrical hazards under dynamic operational conditions.

RailwayRolling StockVibration ResistanceElectrical GroundingDIN EN 50155Protective Earth

2. Industrial Control Panels in Hazardous Locations

Provides a safe and compliant grounding solution for electrical enclosures and machinery within industrial control panels located in potentially explosive atmospheres (Ex zones).

Problem Solved

Offers a secure grounding terminal block that meets stringent safety standards for hazardous locations, leveraging its 'Ex zone' suitability and UL 94 V0 flammability rating to enhance operational safety.

Hazardous LocationsEx ZoneIndustrial Control PanelsGroundingUL 94 V0Explosion Protection

3. Compact Grounding in Machine Building

Ideal for grounding applications in complex machinery where panel space is constrained and operational vibrations are common, due to its space-saving design and robust spring-cage connection.

Problem Solved

Offers a compact, highly reliable, and easily installable grounding terminal block, ensuring secure earth connections even in space-constrained and high-vibration machine building applications, facilitating quick assembly with push-in technology.

Machine BuildingVibrationCompact DesignDIN Rail MountingSpring-Cage ConnectionGrounding