The ZB4BJ291 is a head for a selector switch from the Harmony XB4 range, designed for standard industrial control applications. It features a robust chromium-plated metal bezel with a 22mm mounting diameter and a black long handle operator. This 'stay put' switch head offers two distinct positions at a 90° angle and includes a security feature allowing it to be padlocked on the left. Engineered for harsh environments, it boasts a mechanical durability of 1,000,000 cycles and high protection ratings including IP67, IP69K, and NEMA 4X. Its wide operating temperature range from -40°C to 70°C, coupled with significant vibration and shock resistance, ensures reliable performance in demanding industrial settings.