Siemens A6X30137150 Configurable Switch Body

3SU1 Illuminated Pushbutton — Design Trade-offs from Stated Specs

• Illumination source required — the body does not include a lamp or LED; panel builders must source and wire a compatible illumination source separately, adding component count and wiring labor compared to self-contained illuminated pushbuttons.
• Contact block required — the actuator body alone is not a functional switch; a separate contact block (3SU1 series) must be purchased and assembled, which means two line items and a mechanical assembly step.
• 22.3mm round panel cutout — while standard in the Siemens 22mm series, the 0.3mm tolerance band (vs common 22mmnominal) requires a correctly sized hole; oversized or undersized cutouts will cause fitting issues.
• Non-illuminated alternates exist — the A6X30137750 variant uses the same panel cutout and series but omits the illumination source requirement, reducing wiring and sourcing complexity if a pilot-light function is unnecessary.
• Color fixed at red — color is determined by the lens/button chosen at procurement; no field-configurable color change without replacing the entire actuator head.