SIEMENS 3SU1100-4BF11-1FA0 Non-Illuminated Selector Switch 22 mm 1NO/1NC Silver

SIEMENS 22 mm Selector Switch

The SIEMENS 3SU1100-4BF11-1FA0 is a non-illuminated selector switch designed for industrial control panels and machinery. Its 22 mm mounting diameter fits standard cut-outs, while the keyed operator provides secure position selection. The silver metal head and black plastic bezel suit harsh environments. It is built for maintenance engineers and panel builders who need reliable manual switching.

Check mounting cut-out and contact rating

Verify that your panel has a 22 mm cut-out and that the 10A at 600V AC or 1A at 600V DC contact rating matches your circuit requirements. The switch uses a maintained action with 1NO/1NC contacts and a NEMA A600/R300 designation. Confirm the key removal position and NEMA 1, 12, 2, 3, 3R, 4, 4X ratings meet your enclosure specifications. No cam is included with this unit.

IP66 IP67 IP69K protection for tough conditions

The switch achieves IP20, IP66, IP67, IP69 and IP69K ratings, resisting dust, high-pressure washdown and temperature extremes. The plastic bezel and metal operator head withstand vibration and mechanical shock in normal industrial use. Power dissipation stays low because the contacts carry only the rated control current. No active cooling or special wiring is required for standard operation.