PF33 Position Limit Switches
Position limit switches are control devices for overhead travelling cranes, hoists and machine tools. They operate as auxiliary controllers of electrical motors through power interfaces, such as controllers or PLCs. Materials and components are wear resistant and protect the equipment against water and dust. Both the enclosure and the head of limit switches series PF33 Standard are made of thermoplastic material (nylon reinforced with fibreglass) and they are equipped with 1no+1nc snap action or 1nc slow action switches.

Limit switches series (PF32)01, 05, 07, 10, 12, A, C are double insulated and they are made of water-repellent technopolymer reinforced with self-extinguishing V0 fibreglass. All metal limit switches are painted with epoxidated dust. Series (PF32) 08, 09 are made of aluminium, ensuring higher mechanical strength and making the limit switches three times lighter compared to the standard Zn+Al+Mg alloy units. The switch PRSL320R11 is a single breaking one, while all others are double breaking, electrically separated. All switches are of the positive opening type, thus suitable for safety functions.

X-FSC Position Limit Switches

X-FRZ Position Limit Switches

Position Limit Switches

The "4 Switches" limit switch is made of die-cast aluminium and has cross rods which operate 4 switches and move to maintained positions.

Both the enclosure and the head of the X-FSC limit switch are made of plastic (nylon reinforced with fibreglass) and the "T" or "cross" rods may move to 3 or 4 maintained positions. The X-FRZ limit switch is made of the same plastic, but it features a single rod or a rod with roller with spring return movements. The limit switches are equipped with 1no+1nc snap action switches or, upon request, with 1nc slow action switches. All switches are of the positive opening type, thus suitable for safety functions.