The 84-5340.0020 is a non-illuminated emergency stop switch designed for panel mounting. It features a round, red-white mushroom-head actuator with a maintained switching action and a twist-to-unlock release mechanism. The switch is configured with two normally closed (2 NC) contacts with gold-plated material, a rated operational voltage of 250 VAC/DC, and a thermal current of 5 A. It offers a high mechanical lifetime of 250,000 cycles and an electrical lifetime of 50,000 cycles. With its robust IP65, IP66, and IP67 front protection and a wide operating temperature range, this switch is ideal for ensuring safety in demanding industrial environments.