GHG4118101R1826 CEAG  CEAG Explosion Proof, Red/Black, Pull to Reset 30mm Mushroom Head Emergency Button. he CEAG GHG411 series explosion-proof emergency stop station has a red mushroom style head pushbutton. It has a double pole single throw (DPST) contact configuration. The housing is made of plastic material. This pushbutton has a contact current rating of 16A and a voltage rating of 500V.