Allen Bradley 801 Limit Switches

The Allen-Bradley 801 series switches are general-purpose industrial limit switches that are suitable for a variety of applications. They are commonly used in food processing, transportation, material handling, and packaging applications. Different 801 limit switches have different operator types. The operator types available in the 801 series roller operators, fork operators, stroke operators, weight operators, and rod or chain operators. Additionally, different 801 limit switches have several different contact operation options. These options include slow action spring return options, snap action spring return options, ratchet type maintained options, snap action maintained options, and slow action maintained options. The 801 limit switches that support snap action contact operation can high levels of snap-through force when their mechanisms have travelled the required distance. Different 801 switches support different maximum travel distance ratings to operate their contacts, and different switches also support different minimum over-travel distance ratings. Some of the 801 limit switches have 2 contacts and some have 4 contacts. The position of a switch's lever will determine whether its contacts are open or closed.

The Allen-Bradley 801 series general-purpose limit switches are designed to be used in indoor environments where they will not be exposed to water or freezing conditions. They can operate at 0 to 40 degrees Celsius or 32 to 104 degrees Fahrenheit. The 801 limit switches are available in different enclosures that protect them from different hazards in different environments. These switches are specifically available in NEMA Type 1 enclosures, NEMA Type 4 enclosures that are intended for indoor use, and NEMA Type 7 and 9 enclosures. All of these enclosures can protect the switches from moderate amounts of debris and moisture in their environments, but the switches should be used in clean and non-hazardous environments whenever possible to extend their operating lifespans and reduce the risk of damage or malfunctioning.