The 84-5240.0020 is a panel-mount emergency stop switch designed for safety-critical applications. It features a non-illuminated, red mushroom-head actuator with a 32 mm diameter, fitting a standard 22.3 mm mounting cutout. The switch provides two normally closed (2 NC) gold-plated contacts with a maintained, slow-make switching action and is reset by a twist-to-unlock mechanism. Rated for 250 VAC/DC and a thermal current of 5 A, it has an electrical lifetime of 50,000 cycles and a mechanical lifetime of 250,000 cycles. With IP65, IP66, and IP67 front protection and a wide operating temperature range of -25 °C to +70 °C, this switch ensures reliable performance in demanding industrial environments.