Especially for the stronger stepper systems it is recommended to have an emergency stop. With motors of 4,5nm or 12nm you can cause serious damage. This emergency stop can be easily connects to the interface cards.
Component features:
Safety class IP 65 compliant
Switch 1 NC
Endurance Current 10A
Dimensions ( LxWxH) 70 x 70 x 58 mm, height button 32mm