Safety Limit Switches

pLimit switches operate with the movement of machinery, opening or closing the circuit when movement is detected. Safety limit switches provide a level of risk reduction over regular limit switches, as they have a positive actuation structure, which means that if a fault occurs they will stop conducting the electrical load. /pph2What are safety limit switches used for?/h2/ppSafety limit switches are used in industrial settings to reduce the risk factor in the event of overcurrent or electrical faults. This can be useful in a wide range of applications, from heating and ventilation to the operation of heavy machinery, where normal limit switches might provide a risk if they continued to conduct electricity in the event of a fault./pph2Types of safety limit switches/h2/ppSafety limit switches mainly differ by the type of a href="/web/c/pneumatics-hydraulics-power-transmission/pneumatic-cylinders-actuators/" target="_self"actuator /athey have. This can be a hinge, roller, rod or push bolt, for example.They can also vary by the number of contacts and cable entries that they have. /p

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Description Price Actuator Type Actuator Included Normal State Configuration Action Type IP Rating Connection Type Housing Material Number of Cable Entries Number of Contacts Size of Cable Entries Pole and Throw Configuration Series Depth Dimensions
RS Stock No. 498-5567
Mfr. Part No.440P-MTAS11B
£34.20
Each
Units
Telescope Arm Yes NO/NC Snap - - Metal - 2 M20 - 440P 43mm 71 x 40 x 43 mm
RS Stock No. 323-511
Mfr. Part No.440P-M18001
£14.30
Each
Units
Roller Yes NO/NC Slow IP30 Screw PBT - 2 - - 440P 23.3mm 54 x 25 x 23.3 mm
RS Stock No. 873-2238
Mfr. Part No.440P-MRPB22B
£40.10
Each
Units
Roller Plunger Yes 2NO/NC Slow IP66 M20 Metal - 4 - 4PST 440P 43mm 118 x 40 x 43 mm
RS Stock No. 873-2235
Mfr. Part No.440P-MSLS11B
£34.20
Each
Units
Short Lever Yes NO/NC Snap IP66 M20 Metal - 2 - SPST 440P 64mm 133 x 40 x 64 mm
RS Stock No. 873-2231
Mfr. Part No.440P-MRPS11B
£33.80
Each
Units
Roller Plunger Yes NO/NC Snap IP66 M20 Metal - 2 - SPST 440P 43mm 118 x 40 x 43 mm
RS Stock No. 873-2244
Mfr. Part No.440P-MSRS11B
£34.20
Each
Units
Spring Rod Yes NO/NC Snap IP66 M20 Metal - 2 - SPST 440P 43mm 211 x 40 x 43 mm
RS Stock No. 873-2229
Mfr. Part No.440P-MRPB13B
£40.10
Each
Units
Roller Plunger Yes NO/NC Slow IP66 M20 Metal - 4 - 4PST 440P 43mm 118 x 40 x 43 mm
RS Stock No. 151-2535
Mfr. Part No.440P-CRPS11B
£19.70
Each
Units
Roller Plunger Yes NO/NC Snap IP66 M20 Glass Filled PBT 1 2 M20 SPST 440P 31mm 31 x 90 x 31 mm
RS Stock No. 151-2536
Mfr. Part No.440P-CSLS11B
£16.90
Each
Units
Short Lever Yes NO/NC Snap IP66 M20 Glass Filled PBT 1 2 M20 SPST 440P 41mm 31 x 112 x 41 mm
RS Stock No. 151-2534
Mfr. Part No.440P-CRPB12B
£21.00
Each
Units
Roller Plunger Yes NO/2NC Slow IP66 M20 Glass Filled PBT 1 3 M20 SPST 440P 31mm 31 x 90 x 31 mm
RS Stock No. 151-2537
Mfr. Part No.440P-MALS11B
£27.80
Each
Units
Adjustable Lever Yes NO/NC Snap IP66 M20 Metal 1 2 M20 SPST 440P 64mm 40 x 172 x 64 mm
RS Stock No. 151-2533
Mfr. Part No.440P-CALS11B
£16.20
Each
Units
Adjustable Lever Yes NO/NC Snap IP66 M20 Glass Filled PBT 1 2 M20 SPST 440P 40mm 31 x 106 x 40 mm