Miniature SPDT Snap‑Action Limit Switch for ThyssenKrupp Citia and Cheney LIfts

This Honeywell micro switch is found in a variety of SWLs and VPLs and replaces #M01655 in Cheney platform lifts and #53019 in Citia stairway lifts.

This highly durable, miniature snap‑action switch offers dependable SPDT actuation via a plunger actuator, with quick‑connect terminals for easy installation in tight machinery spaces. Engineered for up to 10 million mechanical cycles, its rugged PCT‑polyester housing withstands operating temperatures from –40 °C to +85 °C (options up to +175 °C), and supports power switching up to 11 A at 277 VAC (250 VDC). With precise travel characteristics—including a max operating force of ~90 gf, max pretravel ~2.79 mm, min overtravel ~1.52 mm, and differential travel up to ~0.76 mm—this switch is well‑suited for seat swivel limit detection in stairlifts, chain‑tension monitoring in platform lifts, or any compact safety‑sensitive application requiring a reliable miniature switch.

Specifications

• Circuit: SPDT (single‑pole double‑throw) switch
• Contact Rating: 11 A at 277 VAC / 250 VDC
• Actuator: Plunger
• Termination: Quick‑connect terminals
• Mechanical Life: up to 10 million cycles
• Operating Temp: –40 °C to +82/85 °C (standard); optional up to +175 °C
• Housing: Glass‑filled PCT polyester (high‑strength thermoplastic)
• Dimensions (approx.): 28.8 mm L × 10.2 mm W × 15.9 mm H (~1.14″ × 0.4″ × 0.63″)
• Travel Characteristics:
• Max Operating Force: ~0.88 N (~90 gf)
• Max Pretravel: ~2.79 mm (~0.110″)
• Min Overtravel: ~1.52 mm (~0.060″)
• Max Differential Travel: ~0.76 mm (~0.030″)

Thanks to its compact size, precise actuation, and robust construction, this switch is a smart choice for the specific seat-swivel limit switch in ThyssenKrupp Citia stairlifts, chain-tension (slack switch) or overspeed governor monitoring in Cheney VPL platform lifts, or similar confined operational environments.

Rely on the built-in mechanical resilience and well-understood SPDT action, and ensure installation by qualified technicians to maintain safety and performance integrity.