1sna146305r0400 – d185/55.ff.ex 185mm power term atex

Why Choose the TE Connectivity 1SNA146305R0400 D185/55.FF.Ex Power Terminal Block?

The TE Connectivity 1SNA146305R0400, also known as the D185/55.FF.Ex, is a heavy-duty 185 mm² feed-through power terminal block designed for high-current conductor connections in industrial electrical panels, power distribution equipment and appropriately engineered hazardous-area installations. Part of the established ENTRELEC SNA terminal block series, it provides a robust stud connection system for large conductors in demanding industrial applications.

The D185/55.FF.Ex uses a stud-based termination arrangement to provide a secure mechanical and electrical connection for high-current power conductors. Its large conductor capacity, high short-time withstand performance and robust polyamide construction make it particularly suitable for power distribution and heavy industrial installations where dependable connections and long-term reliability are essential.

With a 185 mm² rated cross-section and a 353 A rated current, the D185/55.FF.Ex is designed for substantial industrial power connections. It accommodates rigid conductors from 6–185 mm², features a 55 mm terminal spacing and can be mounted on TH35-7.5 or TH35-15 DIN rails, providing a practical solution for high-power control and distribution assemblies.

Key Advantages

• Heavy-duty 185 mm² feed-through power terminal block for industrial applications.
• 353 A rated current for high-current electrical connections.
• Robust stud termination provides secure connection of large conductors and cable lugs.
• Accepts rigid conductors from 6–185 mm².
• High 22.2 kA short-time withstand current for 1 s.
• 55 mm terminal spacing provides suitable clearance for large power conductors.
• Compatible with TH35-7.5 and TH35-15 DIN rails for industrial panel installation.

Key Features

• TE Connectivity / ENTRELEC SNA D185/55.FF.Ex.
• Feed-through power terminal block.
• 185 mm² rated cross-section.
• 353 A rated current.
• 22,200 A short-time withstand current for 1 s.
• Stud connection for secure high-current conductor termination.
• 6–185 mm² rigid conductor capacity.
• 500 kcmil wire size classification.
• 55 mm terminal spacing.
• Single-level, two-position feed-through configuration.
• Grey polyamide insulating housing.
• DIN rail or base mounting capability.

Reliable High-Current Connections for Industrial Power Systems

High-current power terminal blocks provide a secure and organised method of connecting large conductors within industrial electrical systems. The D185/55.FF.Ex uses a robust stud connection that allows suitably terminated conductors and cable lugs to be securely fastened, providing dependable electrical continuity in applications carrying substantial current.

The combination of a 185 mm² rated cross-section, 353 A current rating and high short-time withstand capability makes this terminal particularly suitable for heavy-duty power distribution. Its DIN rail or base mounting options also give panel builders flexibility when integrating large power connections into switchgear, control cabinets and industrial distribution assemblies.

Typical Applications

• Industrial power distribution panels.
• Switchgear and electrical distribution assemblies.
• High-current machinery and automation systems.
• Motor control and industrial power cabinets.
• Process plant electrical systems.
• Appropriately engineered hazardous-area electrical installations.