Safety-Rated Interlock Switches

Safety rated interlock switches are safeguarding measures designed to improve safety in situations where guards or gates are used around hazardous machinery or equipment.

What are safety rated interlock switches used for?

In industrial situations, safety rated interlock switches prevent or permit the use of machinery, depending on safety conditions. They allow current to pass to the machine when it is safe to operate, for example when the machine's guard is closed. And they cut off the power if there's a potential hazard, such as a guard being opened. When a dangerous piece of equipment such as a metalworking machine is in operation, safety rated interlock switch might be used to ensure safety gates remain closed, excluding workers from hazardous areas.

Types of safety rated interlock switches

Safety rated interlock switches vary according to their lock type, maximum current and voltage, as well as their housing material. Guard-locking switches prevent access to machine parts that may still be in motion, even when the power has been cut. Hinge switches will close protective gates and guards in unsafe conditions.


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Description Prix Connection Type Lock Style Normal State Configuration Housing Material Maximum AC Voltage Maximum DC Voltage Safety Contacts Range Actuator Included Lock Type Number of Head Directions Series Auxiliary Contacts Depth
N° de stock RS 746-7295
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Référence fabricant440T-MRPSE100B
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- - 4NO Stainless Steel - - - Prosafe - - 1 440T - -
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M20 Key 2NC Glass Fibre Reinforced Thermoplastic 230V 24V 2NC - - - 3 AZ16 - 30mm
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Référence fabricant440K-C21098
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Référence fabricantXCSC702
134,00 €
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Screw Key 2NC/1NO Zamak 240V 250V 2NC/1NO Preventa - - 8 XCSC - 44mm
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Référence fabricant570220
MarquePilz
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Screw Key 2NC Glass Fibre Reinforced Thermoplastic 240V - 2NC PSENmech Yes - 4 - - 33mm
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Référence fabricantAZ 17-11ZK
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M16 Key 1NC/1NO Glass Fibre Reinforced Thermoplastic 230V 24V 1NC - - - 4 AZ17 1NO 30mm
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Référence fabricant440K-B04025
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M20 Key 2NC/1NO Metal 500V 250V 2NC Centurion Yes - 1 440K 1NO 40.5mm
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Référence fabricantXCSTA791
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Screw Key 2NC/1NO Glass Fibre Reinforced PA 240V 250V 2NC/1NO Preventa - - 8 XCSTA - 30mm
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Référence fabricantD4NS-2CF
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G1/2 Key 2NC/1NO Plastic 240V 250V - - Yes - 4 D4NS - 96mm
N° de stock RS 251-2016
Référence fabricant440K-T11118
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M20 Key 2NC/1NO Glass Filled PBT 240V 24V 2NC Trojan 5 Yes - 4 440K 1NO 52mm
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Référence fabricantD4NS1FF
MarqueOmron
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PG 13.5 Key 2NC/1NO Plastic 240V 250V - - No - 4 D4NS - 30.6mm
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Référence fabricantXCSTA793
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Cable Key 2NC Stainless Steel 240V - 2NC Kobra - - 4 K-SS-Ex - 37.5mm
N° de stock RS 427-1177
Référence fabricant440K-T11303
47,00 €
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M20 Key 2NC Glass Filled PBT 600V 600V 2NC Trojan T15 - - 4 440K - 52mm
N° de stock RS 724-3695
Référence fabricantAZ 3350-12ZUEK-U90
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Screw - NO/NC Insulated Material 415V 220V NO/NC - Yes Magnet Lock 1 LS ZBZ/X - 30.8mm
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Référence fabricantXCSB703
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Cable Key 2NC/1NO Zamak 240V 250V - Preventa Yes - 8 XCSB - 44mm