Pushbutton VRB
Vandal Resist Panel Button. VRB
This VRB  pushbutton is an anti-vandal pushbutton with momentary, normally open contacts and measures approx 22mm in diameter. Requires a 19mm diameter hole. Complete with fixing nut.
 
Features:
Momentary, normally open contacts
Electrical life: 10,000 cycles at full load
Max current/voltage rating with resistive load: 4A 24V DC
Operating temperature: -20Celcius to + 55 Celsius
 
Dimensions:
22mm diameter.