Siemens SIRIUS 3SK1111-1AB30 safety relay basic unit for autonomous safety applications, in good used condition. Provides three safety relay enabling contacts and one signaling contact at 24 V AC/DC.
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Brand: Siemens
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Series: SIRIUS 3SK1
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Model: 3SK1111-1AB30
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Type: Safety relay basic unit, standard series, screw terminals
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Function: Relay enabling circuits 3 NO safety contacts + 1 NC signaling contact
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Supply voltage: 24 V AC/DC (control supply)
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Rated insulation voltage: 300 V; impulse withstand voltage 4 kV (per label/datasheet)
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Rated switching current: up to 5 A (AC-15 / DC-13, see label for details)
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Protection: IP20, finger‑safe housing
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Standards/approvals: IEC/EN 60947‑5‑1, UL Listed, CSA, CE (per label)
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Country of manufacture: Germany (marked on label)
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Used, removed from a working installation
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Light cosmetic wear and dust on housing from normal use and storage
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Label intact and readable; terminals appear clean with no obvious damage
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No original packaging, manual or accessories included – unit only
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Model has front indicators for failsafe status and device output plus start/auto‑monitored selector, as shown in photos.
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Buyer should verify suitability for their safety circuit design and application based on the official Siemens documentation and local safety standards.
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Professional installation and commissioning by a qualified technician is strongly recommended.
