Name: Phoenix Contact ST 1,5-TWIN Feed-Through Terminal Block - INOSAKI
SKU: Phoenix-3031128
Price: 6.22 USD
Availability: InStock

Technical Overview

Grey spring-cage feed-through terminal block, 500V/17.5A, 3 connections, 0.08-1.5mm² wire, DIN rail mountable, -60°C to 110°C.

Key Features

User-friendly implementation of all potential branching tasks.
Tested for railway applications, ensuring high reliability in demanding environments.
Space-saving and practical multi-conductor connection without additional bridges.
Spring-cage connection method for reliable and vibration-resistant wiring.
Suitable for mounting on NS 35/7,5 and NS 35/15 DIN rails.
Wide operating temperature range from -60 °C to 110 °C, including self-heating.
Flammability rating of UL 94 V0 for enhanced safety.

Technical Specification Matrix

Parameter	Value
Color	Grey (RAL 7042)
Housing Material	Polyamide (PA)
Mounting Type	DIN Rail (NS 35/7,5, NS 35/15)
Nominal Voltage	500 V
Nominal Current	17.5 A
Number of Connections	3
Number of Levels	1
Wire Cross Section Range	0.08 mm² - 1.5 mm² (AWG 28 - 16)
Connection Method	Spring-cage connection
Rated Surge Voltage	6 kV
Operating Temperature Range	-60 °C to 110 °C
Flammability Rating	UL 94 V0
Stripping Length	10 mm
Insulation Material	Polyamide (Nylon)
Physical Weight (kg)	0.01
Dimensions L x W x H (cm)	6.05 x 0.42 x 4.4

Industrial Applications

1. Industrial Control Panel Wiring

This terminal block is highly suitable for high-density wiring within industrial control panels. Its three connections per level and compact 4.2 mm width allow for efficient use of DIN rail space, consolidating multiple conductors cleanly. The 500 V / 17.5 A rating accommodates standard control circuit voltages and currents, providing reliable power distribution and signal routing.

Problem Solved

Efficiently manages dense wiring in control cabinets by offering multiple connections in a compact footprint, preventing clutter and simplifying troubleshooting. Ensures reliable electrical connections for control signals and power.

Control PanelsHigh-Density WiringDIN Rail Mounting500V17.5ASpace-saving

2. Railway Signaling and Control Systems

Given its 'tested for railway applications' status and robust spring-cage connection, the terminal block is ideal for use in railway signaling and control systems. The wide operating temperature range of -60 °C to 110 °C ensures functionality in extreme outdoor conditions, while the vibration-resistant spring-cage connection maintains integrity despite constant movement and shock experienced in railway environments.

Problem Solved

Provides secure and stable electrical connections in railway infrastructure, which is prone to severe vibrations and temperature fluctuations, crucial for uninterrupted operation of critical signaling systems.

Railway ApplicationsVibration Resistance-60°C to 110°CSpring-Cage ConnectionSignal Integrity

3. Machine Building and Automation

In machine building and automation, robust and reliable electrical connections are paramount. The ST 1,5-TWIN's 500 V / 17.5 A capacity is well-suited for power and control circuits within machinery. The spring-cage technology ensures consistent contact even under machine vibrations, reducing the risk of intermittent faults and enhancing operational safety and uptime.

Problem Solved

Ensures highly reliable and durable electrical connections in machinery, counteracting vibrations and mechanical stress to prevent system downtime and maintain safe operation for critical automation processes.

Machine BuildingAutomationVibration Stability500V17.5AReliable Connections