Phoenix 3031212 ST 2.5 borne de paso, resorte, 2,5 mm², 800 V, 24 A, gris

In control cabinets and distribution boxes, electricians need a reliable way to connect wires quickly without tools. The Phoenix 3031212 ST 2.5 feed-through terminal block uses spring-cage technology to clamp solid or flexible conductors from 0.08 to 2.5 mm², making it ideal for building dense, maintenance-friendly DIN rail assemblies.

Key specifications

• Connection method: spring-cage, tool-free insertion
• Number of positions: 1, with 2 connections
• Nominal cross section: 2.5 mm² (solid up to 4 mm²)
• Rated voltage/current (IEC): 800 V / 24 A
• Mounting: DIN rail NS 35/7.5 or NS 35/15
• Insulating material: polyamide (PA), UL 94 V0
• Operating temperature: -60 °C to 105 °C
• Colour: grey

Why choose it

The spring-cage connection reduces wiring time and eliminates the need for periodic re-tightening, ensuring a constant contact force even under vibration. Its compact 2.5 mm² footprint allows high-density wiring, while the halogen-free polyamide housing meets strict flammability and environmental requirements.

Ideal use cases

• Building automation and control panels
• Machine building and industrial equipment
• Power distribution in switchgear
• Railway and transportation systems

Good to know

The terminal block is rated for pollution degree 3 and overvoltage category III, making it suitable for harsh industrial environments. It accepts conductors with a stripping length of 8 to 10 mm and is tested at 6 kV impulse withstand voltage.