When size does matter
With the large-sized button B 50 sense of touch is united with smooth curves. The impressive size of 58 mm lateral length/diameter and the high variability open up new fields of application: The button series is perfectly suited for lifts with increased accessibility. Individual design options complete the profile of the button series B 50.
Class 3+
The demands as per EN 81‑71 Class 2 are often not sufficient for many applications. For highly frequented and vandalism-exposed lifts, SCHAEFER has developed special buttons which are twice as robust as demanded by EN 81‑71 Class 2. SCHAEFER Class 3+ fulfils the norms EN 81‑71 Class 1/Class 2 and EN 81‑72, offers a higher impact resistance and with protection class IP 54 an improved dust protection and water protection. The impact resistance test for SCHAEFER Class 3+ is conducted with a 20 joule/5 kg impactor from a height of fall of 0.4 m compared to 10 joule/1 kg from 1 m (as per EN 81‑71 Class 2).
Fixing | |
Spacer + Nut | X |
Faceplate thickness | 2 - 10 mm |
Faceplate thickness (with spacer) | ≤ 6 mm |
Faceplate thickness (without spacer) | > 6 mm |
Connectivity | |
Cutting terminal 4 poles | AWG 26 - 28 |
MicroMatch 4 poles | AWG 28 |
Screw terminal 3 + 4 poles | 0.1 - 1 mm² |
Switching element | |
Snap switch | X |
Stroke | 1.5 mm |
NO contact (SPST-NO) | |
NO contact (quantity) | 1 |
U (DC) | 30 V |
I (inductive load (L/R = 3 ms)) | 0.5 A |
U (AC) | 30 V |
I (ohmic load) | 0.8 A |
Alternating contact (SPDT) | |
Alternating contact (quantity) | 1 |
U (DC) | 120 V |
I (inductive load (L/R = 3 ms)) | 0.2 A |
U (AC) | 50 V |
I (ohmic load) | 0.5 A |
I | 1 A |
LED | |
U | 12 - 30 V DC |
U (option) | 30 - 48 V DC |
U (option, red) | 6 V DC |
I | 40 mA |
Other | |
Degree of protection according to DIN EN 60529 | IP 54 |
Compliance | |
EN 81-20 | X |
EN 81-71 Class 1 | X |
EN 81-71 Class 2 | X |
EN 81-72 | X |
IP 54 DIN EN 60529:2014-09