1sna399071r0200 – d2,5/5,i 4l

Why Choose the TE Connectivity D2.5/5.I.4L Spring Terminal Block?

The TE Connectivity / ENTRELEC D2.5/5.I.4L, manufacturer part number 1SNA399071R0200, is a compact spring-clamp feed-through DIN rail terminal block designed for reliable electrical connections in industrial control panels, machinery and automation systems. As part of the established ENTRELEC SNA spring terminal block range, it provides four connection points in a space-saving 5 mm-wide format.

The D2.5/5.I.4L uses spring-clamp connection technology to provide consistent contact pressure without relying on tightening torque from the installer. Automatic compensation for conductor creep helps maintain dependable electrical contact over time, while the accessible wiring arrangement simplifies installation, testing and maintenance in densely populated control cabinets.

With an IEC rated current of 24 A, rated voltage of 800 V and rated cross-section of 2.5 mm², the 1SNA399071R0200 is suitable for a wide variety of industrial signal, control and power distribution applications. The grey thermoplastic housing mounts onto standard TH 35 DIN rail and provides four connections within a single feed-through terminal block.

Key Advantages

• Compact four-connection feed-through terminal block for industrial wiring.
• Spring-clamp connection technology provides consistent conductor contact pressure.
• 24 A IEC rated current and 800 V rated voltage.
• Only 5 mm wide, helping maximise wiring density inside control panels.
• Supports rigid conductors from 0.12–4 mm².
• Supports flexible conductors up to 2.5 mm².
• DIN rail mounting enables straightforward integration into industrial control cabinets.
• Integrated marking and test facilities simplify identification and maintenance.

Key Features

• TE Connectivity / ENTRELEC SNA spring terminal block range.
• Four feed-through connection points.
• 5 mm terminal spacing / width.
• 24 A rated current at 2.5 mm² to IEC specifications.
• 800 V IEC rated voltage.
• 8,000 V impulse withstand voltage.
• 300 A short-time withstand current for 1 s.
• Spring-clamp connections with automatic compensation for conductor creep.
• Grey thermoplastic insulating body with UL 94 V-0 flammability classification.
• IP20 protection.
• Mounting on TH 35-7.5 and TH 35-15 DIN rail.
• Clearly visible marking area and integrated test facilities.

Reliable Spring-Clamp Connections for Industrial Control Panels

Spring-clamp terminal blocks provide a dependable alternative to conventional screw connections by applying controlled spring pressure directly to the conductor. This helps maintain stable electrical contact despite vibration, temperature changes and conductor creep, while removing the requirement for periodic screw-terminal retightening.

The D2.5/5.I.4L combines four feed-through connections with a narrow 5 mm footprint, making it particularly useful where panel space and wiring density are important. Its DIN rail mounting, accessible conductor connections, marking facilities and test points make it well suited to machine building, industrial automation and electrical distribution applications.

Typical Applications

• Industrial electrical control panels.
• PLC and automation cabinets.
• Machine building and OEM equipment.
• Factory automation and production machinery.
• Control and instrumentation wiring.
• Power and signal distribution systems.
• Motor control panels and switchgear assemblies.
• High-density DIN rail wiring installations.