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Safety 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. Safety interlock switches can vary in lock type, maximum current and voltage, and housing material. The switches are specifically designed to meet high machine safety standards.

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.

Guard Lock – The guard stays locked till the risk of injury has passed

Mechanical Lock – Is an interlock that is physically connected to another device to prevent unintended actions

Magnetic – Used to monitor closing/ opening of machine guards, doors, and types of machinery

Trapped Key Interlock- Will only allow access to a hazardous/ Dangerous area when the key is inserted to the lock

Applications for Safety Interlock Switches

Automated Production Equipment
Material Handling Equipment
Automotive Plants
Pharmaceutical and Chemical Processing
Industrial Machinery
Machine Tools

791 Products showing for Safety Interlock Switches

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In Stock RS PRO Safety Interlock Switch, Plastic RS Stock No. 179-7564 Subtotal (1 unit) €36.09(exc. VAT) €36.09/unit Quantity		-	-	Safety Interlock Switch	-	-	-	-	-	-	Plastic	-	-	-	-	IP67	-	-	-	No	-	95mm	31mm	-	No	31mm	-	-	-
In Stock Allen Bradley Guardmaster Elf Safety Rated Interlock Switch, Keyed Actuator Included, Fibreglass Reinforced Polybutylene RS Stock No. 489-4887 Mfr. Part No. 440K-E33041 Subtotal (1 unit) €41.27(exc. VAT) €41.27/unit Quantity	Allen Bradley Guardmaster	Actuator Included	Keyed	Safety Rated Interlock Switch	-	Interlock	2 NC	-	-	-	Fibreglass Reinforced Polybutylene Terephthalate	-	Elf	18V ac	-	IP67	-20°C	-	3mA	No	80°C	29mm	75mm	8	EN, CE	29mm	-	-	-
In Stock Allen Bradley Guardmaster 440K Safety Interlock Switch, Keyed Actuator Included, Fibreglass Reinforced Polybutylene RS Stock No. 792-3082 Mfr. Part No. 440K-T11467 Subtotal (1 unit) €64.03(exc. VAT) €64.03/unit Quantity	Allen Bradley Guardmaster	Actuator Included	Keyed	Safety Interlock Switch	-	Interlock	1 NO	-	-	-	Fibreglass Reinforced Polybutylene Terephthalate	-	440K	-	-	IP67	-20°C	-	-	No	80°C	52mm	95mm	4	BG, EN954-1, AS4024.1, IEC/EN60947-5-1, NFPA79, CE, ISO13849-1, EN1088, ISO14119, ANSI B11.19, IEC/EN60204-1	32mm	-	-	-
In Stock Allen Bradley Guardmaster 440T Safety Interlock Switch, Keyed Actuator Included, Stainless Steel, Key RS Stock No. 394-7564 Mfr. Part No. 440T-MSBLE100A Subtotal (1 unit) €272.00(exc. VAT) €272.00/unit Quantity	Allen Bradley Guardmaster	Actuator Included	Keyed	Safety Interlock Switch	-	Key	-	-	-	-	Stainless Steel	-	440T	-	-	-	-10°C	-	-	No	50°C	34mm	151mm	1	ISO 13849-1, ISO 14119, IEC 62061, IEC 60947-5-3	48mm	-	-	-
In Stock SICK STR1 Safety Interlock Switch Actuator Included, Valox RS Stock No. 285-9015 Mfr. Part No. STR1-SASF0AC5 Subtotal (1 unit) €165.54(exc. VAT) €165.54/unit Quantity	SICK	Actuator Included	-	Safety Interlock Switch	-	-	2	-	-	-	Valox	-	STR1	230V ac	24V dc	IP67, IP69K	-30°C	1	100mA	No	70°C	26mm	18mm	5	CE	40mm	-	-	-
In Stock SICK i10 Safety Interlock Switch, Fibreglass Reinforced Thermoplastic RS Stock No. 285-9568 Mfr. Part No. i10-RA213 Subtotal (1 unit) €42.44(exc. VAT) €42.44/unit Quantity	SICK	-	-	Safety Interlock Switch	-	-	1 NO, 2 NC	-	-	-	Fibreglass Reinforced Thermoplastic	-	i10	240V ac	24V dc	IP66	-25°C	-	3A	No	80°C	50mm	112mm	4	CE	31mm	-	-	-
In Stock SICK i16 Safety Interlock Switch, Polybutylene Terephthalate RS Stock No. 285-9588 Mfr. Part No. i16-SA113 Subtotal (1 unit) €46.11(exc. VAT) €46.11/unit Quantity	SICK	-	-	Safety Interlock Switch	-	-	1 NO/1 NC	-	-	-	Polybutylene Terephthalate	-	i16	240V ac	24V dc	IP67	-20°C	-	2A	No	80°C	32mm	75mm	3	CE	52mm	-	-	-
In Stock Pilz Safety Interlock Switch, Keyed Actuator Included, Fibreglass Reinforced Thermoplastic, Keyed RS Stock No. 744-8673 Mfr. Part No. 570230 Subtotal (1 unit) €43.28(exc. VAT) €43.28/unit Quantity	Pilz	Actuator Included	Keyed	Safety Interlock Switch	-	Keyed	1 NO/2 NC	-	-	-	Fibreglass Reinforced Thermoplastic	-	-	250V ac	-	IP65	-30°C	-	5A	No	80°C	33mm	90mm	4	IEC, DIN, VDE	52mm	-	-	-
In Stock Allen Bradley Guardmaster 440K Safety Interlock Switch, Keyed Actuator Included, Metal, Keyed RS Stock No. 350-074 Mfr. Part No. 440K-B04025 Subtotal (1 unit) €194.48(exc. VAT) €194.48/unit Quantity	Allen Bradley Guardmaster	Actuator Included	Keyed	Safety Interlock Switch	-	Keyed	1 NO	-	-	-	Metal	-	440K	-	-	IP66	-25°C	1	-	No	80°C	40.5mm	98mm	1	EN 954-1, TUV, AS 4024.1, IEC/EN 60947-5-1, NFPA 79, CE, ISO 14119, ISO 13849-1, IEC/EN 60204-1, ANSI B11.19, EN 1088	129mm	-	-	-
In Stock Allen Bradley 440K Safety Rated Interlock Switch, Keyed Actuator Included, Fibreglass Reinforced Polybutylene RS Stock No. 178-181 Mfr. Part No. 440K-T11090 Subtotal (1 unit) €56.42(exc. VAT) €56.42/unit Quantity	Allen Bradley	Actuator Included	Keyed	Safety Rated Interlock Switch	-	Interlock	1 NO	-	-	-	Fibreglass Reinforced Polybutylene Terephthalate	-	440K	-	-	IP67	-20°C	1	3mA	No	80°C	52mm	95mm	4	ANSI B11.19, IEC/EN 60204-1, EN 1088, AS 4024.1, CE, IEC/EN 60947-5-1, EN 954-1, NFPA 79, TUV, ISO 14119, ISO 13849-1	32mm	-	-	-
In Stock Schmersal AZ16 Safety Switch, Actuator Actuator Included, Fibreglass Reinforced Thermoplastic RS Stock No. 336-221 Mfr. Part No. AZ16-02ZVRK-M16 Subtotal (1 unit) €61.84(exc. VAT) €61.84/unit Quantity	Schmersal	Actuator Included	Actuator	Safety Switch	-	-	2	-	-	-	Fibreglass Reinforced Thermoplastic	-	AZ16	230V ac	24V dc	-	30°C	1	-	No	80°C	90mm	3mm	-	CCC, EN IEC 60947-5-1, EN ISO 14119, EN ISO 13849-1, cULus	52mm	-	-	-
Limited stock Telemecanique Sensors XCSPA Safety Interlock Switch, Keyed Actuator Included, Fibreglass Reinforced Nylon, Interlock RS Stock No. 305-1966 Mfr. Part No. XCSPA791 Subtotal (1 unit) €60.96(exc. VAT) €60.96/unit Quantity	Telemecanique Sensors	Actuator Included	Keyed	Safety Interlock Switch	-	Interlock	-	-	-	-	Fibreglass Reinforced Nylon	-	XCSPA	240V ac	250V dc	IP67	-25°C	-	6A	No	70°C	30mm	94mm	8	UL, CSA C22.2 No. 14, EN/ISO 12100, EN/IEC 60529, ISO 14119, UL 508, EN/IEC 60947-5-1, CSA, EN 1088, EN/IEC 60204-1	30mm	-	-	-
In Stock RS Better World Schneider Electric ComPacT NSX Safety Interlock Switch RS Stock No. 221-1244 Mfr. Part No. LV432520 Subtotal (1 unit) €20.01(exc. VAT) €20.01/unit Quantity	Schneider Electric	-	-	Safety Interlock Switch	-	-	-	-	-	-	-	-	ComPacT NSX	-	-	-	-	-	-	No	-	-	-	-	No	-	Yes	Byggvarubedömningen	-
In Stock SICK RE27 Safety Interlock Switch, Magnet, Vistal, Magnet RS Stock No. 285-8981 Mfr. Part No. RE27-SA68L Subtotal (1 unit) €78.33(exc. VAT) €78.33/unit Quantity	SICK	-	Magnet	Safety Interlock Switch	-	Magnet	2 NO	-	-	-	Vistal	-	RE27	230V ac	24V dc	IP67	-30°C	1	100mA	No	60°C	13mm	88mm	3	CE	25mm	-	-	-
In Stock Telemecanique Sensors XCS Safety Rated Interlock Switch, Keyed Actuator Included, Plastic, Interlock RS Stock No. 220-1371 Mfr. Part No. XCSPA292 Subtotal (1 unit) €66.00(exc. VAT) €66.00/unit Quantity	Telemecanique Sensors	Actuator Included	Keyed	Safety Rated Interlock Switch	-	Interlock	2 NO/1 NC	-	-	-	Plastic	-	XCS	250V ac	-	IP67	-25°C	-	0.27A	No	70°C	30mm	94mm	1	UL, CSA, EN, IEC	30mm	-	-	-
In Stock Telemecanique Sensors XCSA Interlock Safety Interlock Switch, Keyed, Zinc Alloy, Key RS Stock No. 133-0086 Mfr. Part No. XCSA803 Subtotal (1 unit) €151.92(exc. VAT) €151.92/unit Quantity	Telemecanique Sensors	-	Keyed	Interlock Safety Interlock Switch	-	Key	3 NC	-	-	-	Zinc Alloy	-	XCSA	240V ac	250V dc	IP67	-25°C	-	6A	No	70°C	114mm	40mm	8	EN 1088, CSA C22.2 No. 14, EN/IEC 60947-5-1, UL, EN/ISO 12100, EN/IEC 60204-1, CSA, ISO 14119, TC, UL 508	44mm	-	-	-
In Stock SICK T40 Safety Interlock Switch, Plastic, Interlock RS Stock No. 285-9038 Mfr. Part No. T40-E0121K Subtotal (1 unit) €505.51(exc. VAT) €505.51/unit Quantity	SICK	-	-	Safety Interlock Switch	-	Interlock	-	-	-	-	Plastic	-	T40	230V ac	24V dc	IP67	-20°C	-	0.4A	No	55°C	40mm	57mm	5	CE	40mm	-	-	-
In Stock Idec HS5D Safety Interlock Switch, Handle Actuator Included, Interlock RS Stock No. 179-4727 Mfr. Part No. HS5D-03RNM Subtotal (1 unit) €54.76(exc. VAT) €54.76/unit Quantity	Idec	Actuator Included	Handle	Safety Interlock Switch	-	Interlock	3 NC	-	-	-	-	-	HS5D	250V ac	30V dc	IP67	-30°C	-	10A	No	70°C	91mm	30mm	-	CCC, TUV, CE, cULus	30mm	-	-	-
In Stock Allen Bradley Guardmaster 440K Safety Interlock Switch, Tongue Actuator Included, Metal, Interlock RS Stock No. 226-3174 Mfr. Part No. 440K-B04026 Subtotal (1 unit) €194.48(exc. VAT) €194.48/unit Quantity	Allen Bradley Guardmaster	Actuator Included	Tongue	Safety Interlock Switch	-	Interlock	1 NO	-	-	-	Metal	-	440K	-	-	IP66	-25°C	1	-	No	80°C	98mm	64mm	1	ISO 14119, EN 1088, NFPA 79, IEC/EN 60204-1, ANSI B11.19, AS 4024.1, CE, ISO 13849-1, EN 954-1, IEC/EN 60947-5-1, TUV	40.5mm	-	-	-
In Stock Omron D4BS Safety Interlock Switch, Keyed, Plastic RS Stock No. 240-8232 Mfr. Part No. D4BS-15FS Subtotal (1 unit) €91.81(exc. VAT) €91.81/unit Quantity	Omron	-	Keyed	Safety Interlock Switch	-	-	NC, NO	-	-	-	Plastic	-	D4BS	-	-	IP67	-40°C	-	-	No	80°C	43mm	111.5mm	4	CE	40mm	-	-	-