GRB258I01BB is a 3-pole SPDT rocker switch featuring a (ON)-OFF-(ON) momentary function configuration. The switch is rated for 20A at 125VAC (3/4HP), 20A at 250VAC, and 10A at 24VAC, with contact resistance of 50mO maximum and insulation resistance of 100MO minimum at DC 500V. It features IP-56 water and dust protection, with a black Nylon #66 frame and a black Nylon #66 + 33% glass fiber reinforced actuator. The switch operates over a temperature range of -20°C to 85°C and withstands dielectric strength of AC 1500V for 1 minute. This RoHS compliant rocker switch is suitable for industrial control panels, equipment, and applications requiring reliable momentary switching with environmental protection.