The model number 3LD2122-0TK13 indicates its specific design and functionality, making it a dependable choice for emergency stop applications. With its durable construction and well-known brand reputation, this switch is a critical component for ensuring safety efficiency in various industrial settings. Siemens 3LD2122-0TK13 emergency stop switch 25a 2-pole 600vac, the is a reliable and high-quality electrical component designed for industrial use. With a current rating of 25a and coil voltage 600vac, this 2-pole switch is suitable for ac systems.