GRB260K101BBNN is an industrial-grade pushbutton switch designed for control applications requiring multiple contact configurations and high electrical ratings. The switch features contact ratings of 20A 125VAC, 10A 250VAC, 16A 125VAC, 50A 277VAC, and 21A 14VDC, with a maximum contact resistance of 50 mO and insulation resistance of 100 mO minimum at DC 500V. It operates reliably across a temperature range of -20°C to +85°C and maintains dielectric strength of AC 1500V for 1 minute. The switch frame is constructed from nylon with glass fiber (UL flame rating 94HB), terminals are silver-plated brass, and illuminated actuators are available in red, amber, or green colors with IP-56 waterproof and dustproof protection. This makes it suitable for industrial control panels, machinery automation, and harsh environment applications where durability and reliable switching performance are essential.