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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Omschrijving Prijs 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-stocknr. 757-9156
FabrikantnummerD4B-4171N
FabrikantOmron
51,13 €
Each
Aantal stuks
Roller Plunger Yes NO/NC Snap - Screw Metal 1 2 M20 DPST D4B-N 43mm 97 x 40 x 43 mm
RS-stocknr. 873-2244
Fabrikantnummer440P-MSRS11B
42,70 €
Each
Aantal stuks
Spring Rod Yes NO/NC Snap IP66 M20 Metal - 2 - SPST 440P 43mm 211 x 40 x 43 mm
RS-stocknr. 749-7593
Fabrikantnummer3SE5112-0CR01
FabrikantSiemens
48,60 €
Each
Aantal stuks
Spring Rod Yes NO/NC - IP66, IP67 Screw Metal - - - DPST 3SE5 37.3mm 85.7 x 40.5 x 37.3 mm
RS-stocknr. 410-6994
FabrikantnummerC2-SU1Z ST.
FabrikantBernstein AG
17,39 €
Each
Aantal stuks
Plunger Yes NO/NC Snap IP20 Screw Fibreglass 1 2 8.5 x 3.5 mm - C2 21mm 44 x 26 x 21 mm
RS-stocknr. 410-7234
FabrikantnummerC2-U1Z ST.
FabrikantBernstein AG
15,73 €
Each
Aantal stuks
Plunger Yes NO/NC Slow IP20 Screw Fibreglass 1 2 8.5 x 3.5 mm - C2 21mm 44 x 26 x 21 mm
RS-stocknr. 621-1521
FabrikantnummerD4N-112G
FabrikantOmron
21,96 €
Each
Aantal stuks
Roller Lever Yes NO/NC Snap IP67 Screw - - 2 - SPDT D4N 45mm 73 x 31 x 45 mm
RS-stocknr. 621-1543
FabrikantnummerD4N-1132
FabrikantOmron
15,80 €
Each
Aantal stuks
Roller Plunger Yes NO/NC Snap IP67 Screw - - 2 - SPDT D4N 31.5mm 83.6 x 31 x 31.5 mm
RS-stocknr. 836-2731
FabrikantnummerD4B4A11N
FabrikantOmron
56,28 €
Each
Aantal stuks
Roller Lever Yes 2NC Slow IP67 Screw Metal 1 - M20 - D4B 131.3mm 40 x 62 x 131.3 mm
RS-stocknr. 749-7631
Fabrikantnummer3SE5122-0CE01
FabrikantSiemens
48,96 €
Each
Aantal stuks
Roller Lever Yes NO/NC - IP66, IP67 Screw Metal - - - DPST 3SE5 37.8mm 85.7 x 56 x 37.8 mm
RS-stocknr. 621-1515
FabrikantnummerD4N-1120
FabrikantOmron
17,70 €
Each
Aantal stuks
Roller Lever Yes NO/NC Snap IP67 Screw - - 2 - SPDT D4N 47mm 73 x 31 x 47 mm
RS-stocknr. 498-5567
Fabrikantnummer440P-MTAS11B
42,70 €
Each
Aantal stuks
Telescope Arm Yes NO/NC Snap - - Metal - 2 M20 - 440P 43mm 71 x 40 x 43 mm
RS-stocknr. 410-7111
FabrikantnummerC2-U1Z
FabrikantBernstein AG
14,59 €
Each
Aantal stuks
Radius Yes NO/NC Slow IP20 Screw Fibreglass 1 2 8.5 x 3.5 mm - C2 21mm 44 x 26 x 21 mm
RS-stocknr. 621-1537
FabrikantnummerD4N-1131
FabrikantOmron
15,80 €
Each
Aantal stuks
Plunger Yes NO/NC Snap IP67 Screw - - 2 - SPDT D4N 30mm 73.2 x 31 x 30 mm
RS-stocknr. 766-1700
FabrikantnummerXCSM3902L1
78,10 €
Each
Aantal stuks
Roller Plunger Yes NO/2NC Snap - Cable Metal - 3 - 3P XCSM 16mm 70 x 30 x 16 mm
RS-stocknr. 410-6988
FabrikantnummerC2-U1Z R
FabrikantBernstein AG
16,25 €
Each
Aantal stuks
Roller Tappet Yes NO/NC Slow IP20 Screw Fibreglass 1 2 8.5 x 3.5 mm - C2 21mm 44 x 26 x 21 mm
RS-stocknr. 757-9159
FabrikantnummerD4B4116N
FabrikantOmron
51,13 €
Each
Aantal stuks
Roller Lever Yes NO/NC Snap - Screw Metal 1 2 M20 DPST D4B-N 43mm 99.5 x 40 x 43 mm
RS-stocknr. 873-2231
Fabrikantnummer440P-MRPS11B
42,20 €
Each
Aantal stuks
Roller Plunger Yes NO/NC Snap IP66 M20 Metal - 2 - SPST 440P 43mm 118 x 40 x 43 mm
RS-stocknr. 768-6298
Fabrikantnummer3SE5232-0PC05
FabrikantSiemens
21,87 €
Each
Aantal stuks
Round Plunger Yes 2NO/NC Slow - Screw Plastic 1 3 M20 x 1.5 - 3SE5 68mm 31 x 33 x 68 mm
RS-stocknr. 746-7242
FabrikantnummerD4N-4120
FabrikantOmron
17,70 €
Each
Aantal stuks
Roller Lever Yes NO/NC Snap - Screw - - 2 M20 DPST D4N 47mm 64 x 31 x 47 mm
RS-stocknr. 410-7329
FabrikantnummerI88-U1 AV
FabrikantBernstein AG
37,36 €
Each
Aantal stuks
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
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