The 440N-Z2NRS1B switch is a non-contact safety switch that has been designed by Allen-Bradley/Rockwell Automation and included in the Guardmaster Safety Relays series. This series provides safety relays that can meet functional safety standards and at the same time offer the key functions that can simplify the installation process and reduce the system complexity. This specific part is designed with a small size and can be connected in a series with other devices for specific applications. The Allen-Bradley/Rockwell Automation 440N-Z2NRS1B non-contact safety switch comes with 2 normally closed reed-type safety outputs and it does not include auxiliary outputs. This switch has an operating distance of 8 millimeters for the make mode and 15 millimeters for break mode.

The Allen-Bradley/Rockwell Automation 440N-Z2NRS1B non-contact safety switch is connected to other devices through a 10-meter cable. This switch operates with a non-contact actuation and magnetic coded sensing, it has a high tolerance to misalignment, and it has been designed to be used only with the specified controllers. The Allen-Bradley/Rockwell Automation 440N-Z2NRS1B non-contact safety switch comes with an IP 67 enclosure that protects the contacts in different kinds of environments. It is made with molded ABS housing and actuator material and it is red. This switch operates with a 10% sensing range and an output current of 200 milliamps. When installing this switch, a clearance of 5 millimeters must be maintained in ferrous surroundings. The use of anaerobic adhesives is not recommended. The frequency of the operating cycle is 1 Hertz and it can support operations in environments with a temperature range of -10 to 55 degrees Celsius.