Limit Switches
Safety Switches
440P 30mm Large Metal
The 30mm metal safety limit switches conform to EN 50047 and have been developed to provide a range of options including snap acting, slow break/make with 2, 3 or 4 contact configurations and a choice of actuator heads. These switches also offer the option of rotating the head in 90° increments before installation to allow ease of mounting.
Allen–Bradley/Guardmaster limit switches can be used in other applications other than guard doors, for example on moving machine beds, crane arms, lifts, elevators, etc.
Operation of these limit switches is achieved by the sliding action of the guard or other moving object deflecting the plunger or lever. For safety applications it is important that upon actuation, the guard or other moving objects should not pass completely over the switch and allow the plunger or lever to return to its original position.
Features
- Large selection of actuator heads
- Positive operation, forced disconnection of contacts
- Snap-acting, slow make before break or slow break before make contact blocks
- Contacts 1 N.C. + 1 N.O., 2 N.C. + 1 N.O. 3 N.C., 2 N.C. + 2 N.O., 3 N.C. + 1 N.O., or 4 N.C.
- Conforms to EN 50041, EN 1088, EN 60947–5–1, EN 292 and EN 60204–1