Phoenix Contact 3031254 ST 2,5-TWIN BU Feed-through terminal block 24A number of

The Phoenix Contact ST 2,5-TWIN BU is a compact blue feed-through terminal block that connects three conductors in a single 5.2 mm wide unit. Its spring-cage connection supports a nominal voltage of 800 V and nominal current of 24 A, accepting rigid conductor cross-sections from 0.08 mm² to 4 mm² without tools or ferrule restrictions.

Technical specifications:

• Part designation: ST 2,5-TWIN BU
• Catalog number: 3031254
• Manufacturer: Phoenix Contact
• EAN: 4017918186760
• Product type: Multi-conductor feed-through terminal block
• Number of connections: 3
• Connection method: Spring-cage connection
• Nominal voltage: 800 V
• Nominal current: 24 A (at 4 mm²)
• Maximum load current: 28 A
• Nominal cross section: 2.5 mm²
• Conductor cross-section rigid: 0.08 mm² - 4 mm²
• Conductor cross-section flexible: 0.08 mm² - 2.5 mm²
• Stripping length: 8 mm - 10 mm
• Rated surge voltage: 8 kV
• Overvoltage category: III, degree of pollution 3
• Mounting type: DIN rail NS 35/7.5, NS 35/15
• Color: blue (RAL 5015)
• Dimensions W x H x D: 5.2 mm x 60.5 mm x 36.5 mm (on NS 35/7.5)
• Operating temperature range: -60°C to 85°C
• Insulating material: PA, flammability UL 94 V0
• ATEX/IECEx: II 2 GD Ex eb IIC Gb
• Pack size: 50 pc
• Country of origin: DE

Features and benefits:

• Spring-cage connection enables one-handed wiring with no tool required
• Accepts very small flexible conductors from 0.08 mm²; no cross-section restriction when using ferrules
• Three conductors terminate in a single 5.2 mm wide block, minimising panel space
• Spring-loaded contacts provide reliable vibration resistance in demanding installations
• Compatible with the full CLIPLINE complete range of bridging, marking, and testing accessories

Applications:

• Multi-conductor signal and power distribution in machine building and plant engineering
• Process industry control panels requiring compact three-conductor termination
• Railway industry wiring subject to DIN EN 45545-2 fire protection requirements
• Hazardous area installations requiring ATEX/IECEx-certified terminal blocks

Compliant with IEC 60947-7-1, UL 94 V0 flammability, and DIN EN 45545-2 (R22-R26 HL 1-HL 3) for rail vehicles. Part of the Phoenix Contact CLIPLINE complete terminal block system.

Also known as: Phoenix Contact ST 2,5-TWIN BU, Phoenix 3031254, Phoenix Contact spring-cage twin terminal block blue.