Safety Limit Switches

Limit 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.

What are safety limit switches used for?

Safety 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.

Types of safety limit switches

Safety limit switches mainly differ by the type of actuator they 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.


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Description Prix 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
N° de stock RS 621-1537
Référence fabricantD4N-1131
MarqueOmron
15,80 €
Each
Unité
Plunger Yes NO/NC Snap IP67 Screw - - 2 - SPDT D4N 30mm 73.2 x 31 x 30 mm
N° de stock RS 410-7111
Référence fabricantC2-U1Z
MarqueBernstein AG
14,59 €
Each
Unité
Radius Yes NO/NC Slow IP20 Screw Fibreglass 1 2 8.5 x 3.5 mm - C2 21mm 44 x 26 x 21 mm
N° de stock RS 498-5567
Référence fabricant440P-MTAS11B
42,70 €
Each
Unité
Telescope Arm Yes NO/NC Snap - - Metal - 2 M20 - 440P 43mm 71 x 40 x 43 mm
N° de stock RS 621-1515
Référence fabricantD4N-1120
MarqueOmron
17,70 €
Each
Unité
Roller Lever Yes NO/NC Snap IP67 Screw - - 2 - SPDT D4N 47mm 73 x 31 x 47 mm
N° de stock RS 746-7255
Référence fabricantD4N-4132
MarqueOmron
15,80 €
Each
Unité
Roller Plunger Yes NO/NC Snap - Screw - - 2 M20 DPST D4N 31.5mm 64 x 31 x 31.5 mm
N° de stock RS 410-7329
Référence fabricantI88-U1 AV
MarqueBernstein AG
37,36 €
Each
Unité
Spindle Yes NO/NC Slow IP65 Screw Fibreglass 1 2 M20 x 1.5 - I88 SU/U 30.5mm 62 x 22 x 30.5 mm
N° de stock RS 873-2231
Référence fabricant440P-MRPS11B
42,20 €
Each
Unité
Roller Plunger Yes NO/NC Snap IP66 M20 Metal - 2 - SPST 440P 43mm 118 x 40 x 43 mm
N° de stock RS 768-6298
Référence fabricant3SE5232-0PC05
MarqueSiemens
21,87 €
Each
Unité
Round Plunger Yes 2NO/NC Slow - Screw Plastic 1 3 M20 x 1.5 - 3SE5 68mm 31 x 33 x 68 mm
N° de stock RS 757-9159
Référence fabricantD4B4116N
MarqueOmron
51,13 €
Each
Unité
Roller Lever Yes NO/NC Snap - Screw Metal 1 2 M20 DPST D4B-N 43mm 99.5 x 40 x 43 mm
N° de stock RS 202-3847
Référence fabricantGHG2610005R0005
MarqueCEAG
277,89 €
Each
Unité
- - NO/2NC - - Screw Polyamide 2 3 M20 3P - 112mm 102 x 84 x 112 mm
N° de stock RS 749-7701
Référence fabricant3SE5423-0CC20-1EA2
MarqueSiemens
60,57 €
Each
Unité
Plunger Yes NO/NC - IP67 M12 Metal - - - DPST 3SE5 16mm 50 x 40 x 16 mm
N° de stock RS 746-7242
Référence fabricantD4N-4120
MarqueOmron
17,70 €
Each
Unité
Roller Lever Yes NO/NC Snap - Screw - - 2 M20 DPST D4N 47mm 64 x 31 x 47 mm
N° de stock RS 769-6276
Référence fabricant3SE5132-0CE05
MarqueSiemens
37,80 €
Each
Unité
Roller Lever Yes NO/NC Snap - Screw Plastic 1 2 M20 x 1.5 - 3SE5 78mm 40.5 x 37.3 x 78 mm
N° de stock RS 768-6241
Référence fabricant3SE5232-0LC05
MarqueSiemens
21,87 €
Each
Unité
Round Plunger Yes NO/2NC Snap - Screw Plastic 1 3 M20 x 1.5 - 3SE5 68mm 31 x 33 x 68 mm
N° de stock RS 227-977
Référence fabricant3SE5232-0HC05
MarqueSiemens
19,98 €
Each
Unité
Plunger - NO/NC - IP65 Screw Plastic - - - - 3SE5 33mm 75.7 x 31 x 33 mm
N° de stock RS 410-7436
Référence fabricantI88-SU1Z AH
MarqueBernstein AG
35,60 €
Each
Unité
Spindle Yes NO/NC Snap IP65 Screw Fibreglass 1 2 M20 x 1.5 - I88 SU/U 30.5mm 62 x 22 x 30.5 mm
N° de stock RS 621-1565
Référence fabricantD4N-1A2H
MarqueOmron
21,84 €
Each
Unité
Roller Lever Yes NO/NC Slow IP67 Screw - - 2 - SPDT D4N - -
N° de stock RS 746-7258
Référence fabricantD4N-412H
MarqueOmron
19,67 €
Each
Unité
Roller Lever Yes NO/NC Snap - Screw - - 2 M20 DPST D4N 48.2mm 64 x 31 x 48.2 mm
N° de stock RS 757-9152
Référence fabricantD4B4117N
MarqueOmron
54,30 €
Each
Unité
Rod Lever Yes NO/NC Snap - Screw Metal 1 2 M20 DPST D4B-N 43mm 99.5 x 40 x 43 mm
N° de stock RS 873-2238
Référence fabricant440P-MRPB22B
49,90 €
Each
Unité
Roller Plunger Yes 2NO/NC Slow IP66 M20 Metal - 4 - 4PST 440P 43mm 118 x 40 x 43 mm