















Key Switch with profile half cylinder (without recall light)
Fixing | |
Clip fixing | X |
Faceplate thickness | 2 - 3 mm |
Connectivity | |
Screw terminal 3 poles | 0.1 - 1 mm² |
Screw terminal 3 poles | AWG 26 - 28 |
Number of contacts | |
1 alternating contact | 1 switching position |
1 alternating contact + 1 NO contact | 1 switching position |
Switching element | |
Snap switch | X |
NO contact (SPST-NO) | |
NO contact (quantity) | 1 - 2 (depending on the switching position) |
U (DC) | 120 V / 30 V |
I (inductive load (L/R = 3 ms)) | 0.2 A / 0.5 A |
U (AC) | 50 V |
I | 1 A |
I (ohmic load) | 0.5 A / 0.8 A |
Alternating contact (SPDT) | |
Alternating contact (quantity) | 1 - 2 (depending on the switching position) |
U (DC) | 120 V / 30 V |
I (inductive load (L/R = 3 ms)) | 0.2 A / 0.5 A |
U (AC) | 50 V |
I (ohmic load) | 0.5 A / 0.8 A |
I | 1 A |
Cylinder | |
Profile half cylinder | STUV product, 40.5 mm long, locking nose vertically downwards, fixing holes downwards, surface nickel-plated (option: brass-coloured) |
Switching positions and turning direction
MS 42 P, S1 a
S = Switch function
key switch with 1 contact (snap switch), contact located left
Contact after 90° right rotation
Key can only be removed in ‘off’, without recall light
Key positions: 0 + I; Key removal: 0° = off
MS 42 P, S 1 a (without recall light)
- Stock: In Stock
- Brand: SCHAEFER
- Part number: 1009181
- Weight: 0.18kg