Overview
The Siemens 3SU1401-1BF40-3AA0 is a high-quality LED module from the SIRIUS ACT series, designed for reliable industrial control and signalling applications. It features an integrated green LED operating at 230 V AC, with spring‑type terminals for easy wiring. The module is built for front‑plate mounting, making it ideal for control panels, push‑buttons, and indicator assemblies in industrial machinery.
Key technical specifications
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Operating voltage: 230 V AC (50/60 Hz)
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Maximum current consumption: 20 mA
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Insulation voltage: 320 V
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Light source: LED, color green
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Light intensity: 900–1,400 mcd
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Connection: spring‑loaded terminals; supports conductor cross‑sections 0.25–1.5 mm²
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Mounting: front‑plate mounting
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Environmental / mechanical: IP40 (enclosure) / IP20 (terminals) protection; operating temperature range –25 … +70 °C
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Surge voltage resistance: 4 kV
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Typical service life: approx. 100,000 hours
Benefit & Function
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Reliable indication — The bright green LED offers clear visual signalling in control panels or operator stations, enhancing safety and usability.
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Low power consumption — At only 20 mA, this module is energy‑efficient while maintaining bright illumination.
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Easy installation — Spring‑type terminals and front‑plate mounting enable fast, tool-free assembly on standard control panels.
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Durable and robust — With 320 V insulation rating and surge resistance up to 4 kV, it withstands electrical stress in industrial environments.
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Long lifetime — Up to ~100,000 hours of LED service life reduces maintenance and replacement frequency.
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Wide compatibility — Designed for 230 V AC systems, ideal for industrial machinery, control cabinets, and automation setups.
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