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The SIEMENS 5ST1146 is a 35mm DIN rail used to mount circuit breakers, terminal blocks, contactors, and other din-rail-compatible components inside electrical enclosures and control panels. The rail provides the standardized mounting surface that snaps and secures modular devices in place, keeping wiring organized and components firmly positioned. This type of mounting hardware is a fundamental part of industrial and commercial panel construction. Electricians and panel builders use this rail during new enclosure builds and retrofit projects where additional component mounting capacity is needed.
The 5ST1146 is suited for use in industrial control panels, commercial electrical enclosures, HVAC equipment control sections, and automation cabinets where DIN-rail-compatible devices need a secure, standardized mounting surface. The pack format makes it practical for shop stock and multi-panel projects where consistent hardware is required across installations.
Designed as a standard 35mm DIN rail mounting track compatible with IEC 60715-compliant modular devices, including circuit breakers, terminal blocks, relays, and motor starters designed for DIN rail installation.
Installation should be performed by a qualified electrician in accordance with NEC requirements and local codes. De-energize the panel and verify absence of voltage before working inside any enclosure. Rail sections are typically cut to length with a hacksaw or rail cutter and secured to the enclosure back plate with appropriate fasteners before snapping components into place. Ensure the rail is fully seated and fastened before loading it with devices.
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