SI-QS90E is Banner Engineering's plastic-compact safety interlock switch designed for machine guarding in industrial environments. The 90 × 52 × 33 mm thermoplastic body houses two normally closed safety contacts (2 NC) with a wiring-chamber connection for straightforward integration into safety circuits. It carries IP65 protection, operates from -30 to 80 °C, and achieves a CAT 4 safety level with SIL CL 3, backed by a SISTEMA B10d rating of 2 million, indicating robust mechanical life. The device is not ISD Connect compatible and has no in-series diagnostics, aligning with Banner’s SI-QS90E family as a dependable, compact safety interlock for safeguarding operations.
