Name: Phoenix Contact ST 1.5 BU Feed-Through Terminal Block - INOSAKI
SKU: Phoenix-3031089
Price: 26.12 USD
Availability: InStock

Technical Overview

Blue 500V/17.5A spring-cage feed-through terminal block for 0.08-1.5mm² (28-16 AWG) wire. Mounts on DIN rails. Tested for railway applications.

Key Features

Tested for railway applications, ensuring high reliability in demanding environments.
Large wiring space accommodates conductors with ferrules and plastic collars within the nominal cross-section.
Compact design and front connection simplify wiring in confined spaces.
Consistent double function shaft allows for time-saving potential distribution and integration of test accessories.
Blue color (RAL 5015) for clear identification in wiring systems.
Insulating material is Polyamide (PA) with a UL 94 V0 flammability rating for safety.
Mounts easily on standard NS 35/7,5 and NS 35/15 DIN rails.
Connects up to two wires for feed-through applications.

Technical Specification Matrix

Parameter	Value
Nominal Voltage	500 V
Nominal Current	17.5 A
Rated Surge Voltage	6 kV
Connection Method	Spring-cage connection
Number of Connections	2
Nominal Cross Section	1.5 mm²
Conductor Cross Section Solid (Min)	0.08 mm²
Conductor Cross Section Solid (Max)	1.5 mm²
Conductor Cross Section AWG (Min)	28 AWG
Conductor Cross Section AWG (Max)	16 AWG
Operating Temperature Range	-60 °C to 110 °C (including self-heating)
Color	Blue (RAL 5015)
Insulating Material	Polyamide (PA)
Flammability Rating	UL 94 V0
Degree of Pollution	3
Overvoltage Category	III
Insulating Material Group	I
Contact Resistance	1.43 mΩ
Mounting Type	NS 35/7,5, NS 35/15 DIN rail
Physical Weight (kg)	0
Dimensions L x W x H (cm)	4.85 x 0.42 x 4.4

Industrial Applications

1. Industrial Control Cabinet Wiring

These terminal blocks are ideally suited for reliable power and signal distribution within industrial control cabinets. Their 500V/17.5A rating and 0.08-1.5mm² wire capacity provide robust connectivity for various control circuits, ensuring secure connections essential for machinery operation.

Problem Solved

Provides secure, vibration-resistant electrical connections in dense control cabinets, minimizing wiring errors and enhancing system reliability due to its compact design and spring-cage technology.

500V17.5A0.08-1.5mm² wireSpring-cage connectionDIN rail mount

2. Railway Signaling and Communication Systems

Given its 'tested for railway applications' specification, this terminal block is perfect for signaling and communication infrastructure in harsh railway environments. The wide operating temperature range of -60°C to 110°C ensures consistent performance despite extreme weather fluctuations.

Problem Solved

Offers extreme temperature resilience and certified reliability for safety-critical railway systems, where continuous operation under harsh environmental conditions is paramount.

Railway applications-60°C to 110°C500V17.5AVibration resistant

3. Automated Manufacturing Machinery

In automated machinery, space is often at a premium. The compact design and front connection of this terminal block facilitate quick and easy wiring of sensors, actuators, and control modules, supporting up to 500V and 17.5A, crucial for industrial automation.

Problem Solved

Enables efficient and user-friendly wiring in tightly packed machine assemblies, reducing installation time and providing robust power and signal connections for reliable machine operation.

Compact designFront connection500V17.5A0.08-1.5mm² wire