Phoenix Contact 3031128 ST 21.5-TWIN Series Grey, 1.5mm², 3-Level

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RS Stock No.:
648-2997
Distrelec Article No.:
300-12-520
Mfr. Part No.:
3031128
Brand:
Phoenix Contact
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Brand

Phoenix Contact

Colour

Grey

Number of Levels

3

Series

ST 21.5-TWIN

American Wire Gauge

28 → 16AWG

Voltage Rating

500 V

Cable CSA

1.5mm²

Current Rating

17.5A

Minimum Operating Temperature

-60°C

Maximum Operating Temperature

+85°C

Model Number

ST 1,5-TWIN

COO (Country of Origin):
DE

Phoenix Contact ST 21.5-TWIN Series DIN Rail Terminal Block, 3 Levels, 17.5A Current Rating - 3031128


This DIN Rail Terminal Block is designed for efficient electrical connections in industrial applications. The terminal block features a compact design with a width of 4.2mm and a height adjustable for NS 35/7.5 and NS 35/15 mounting types. With a robust grey insulating material, it ensures durability across various environments.

Features & Benefits


• Supports conductor cross-sections from 0.08mm² to 1.5mm²
• Accepts both solid and stranded wire connections
• Rated for a maximum current of 17.5A
• Withstands voltage ratings up to 500V
• Temperature range from -60°C to 85°C for versatile use
• Spring-cage connection method enhances wiring efficiency

Applications


• Used for connecting power and control circuits
• Ideal for automation systems requiring reliable connections
• Commonly employed in electrical panels for signal distribution
• Suitable for in harsh environmental conditions

What conductor types are compatible with this terminal block?


It accommodates solid and stranded conductors, allowing flexibility in installation. The cross-sections range from 0.08mm² to 1.5mm² for both types, making it suitable for various wiring needs.

How does the temperature rating benefit operational stability?


The extensive temperature range from -60°C to 85°C ensures reliable performance in extreme conditions, suitable for environments that may experience fluctuations in temperature.

What is the significance of the spring-cage connection method?


The spring-cage connection method ensures a secure and vibration-resistant connection, minimising the risk of loose wiring in high-demand applications, which is crucial for maintaining system integrity.

Approvals

UL, CUL

Standards

IEC 60 947-7-1

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