Leading Manufacturer of Safety Interlock Switches and Machine Guard Safety Switch Devices for Automation and Process Safety

KL4-SS Guard Locking Safety Switch with Optional Pushbutton
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KL4-SS Guard Locking Safety Switch with Optional Pushbutton

The KL4-SS guard locking safety interlock is housed in a mirror-polished 316 stainless steel body and provides a holding force of up to 3000 N. Designed for medium to large guard doors, it helps keep guards securely closed until hazardous motion has stopped or the hazard has been removed.

The KL4-SS is available with a momentary pushbutton mounted in the lid, featuring a single set of changeover contacts for additional control or signalling functionality.

Tested to IP69K, the KL4-SS is suitable for strict washdown environments, including food, beverage, pharmaceutical, and other hygiene-critical manufacturing applications.



    

  • Body manufactured from Mirror Polished 316 Grade Stainless Steel
    • 

  • Holding Force up to F1Max 3000N (300Kg)
    • 

  • Actuation via Rotating head for up to 8 entry positions
    • 

  • Ingress Protection up to IP69K
    • 

  • Connectivity via 3 x M20 or 1/2″ NPT Conduits
    • 



				

			

			

				
				
				
				
			

				

				
				
				
				
				

				
				
				
				
				
				

					

				
				
				
				
				



Part Number
Part Description
Voltage
Connection Type
Auxiliary Override
Actuator
Pushbutton






209001
KL4-SS M20 24V (std release)
24V
M20
Lid and Side
No Actuator
No




209001-PB
KL4-SS M20 24V (std release) c/w Pushbutton
24V
M20
Lid and Side
No Actuator
Yes




209001-A
KL4-SS M20 24V (std release) – std actuator
24V
M20
Lid and Side
A – Standard Actuator
No




209001A-PB
KL4-SS M20 24V (std release) c/w Pushbutton – std actuator
24V
M20
Lid and Side
A – Standard Actuator
Yes




209001-F
KL4-SS M20 24V (std release) – flat actuator
24V
M20
Lid and Side
F – Flat Actuator
No




209001F-PB
KL4-SS M20 24V (std release) c/w Pushbutton – flat actuator
24V
M20
Lid and Side
F – Flat Actuator
Yes




209001HF
KL4-SS M20 24V (std release) – HF actuator
24V
M20
Lid and Side
HF – Metal Flexible Actuator
No




209001HF-PB
KL4-SS M20 24V (std release) c/w Pushbutton – HF actuator
24V
M20
Lid and Side
HF – Metal Flexible Actuator
Yes




209001-HFH
KL4-SS M20 24V (std release) – HFH actuator
24V
M20
Lid and Side
HFH – Stainless Steel Flexible Actuator
No




209001HFH-PB
KL4-SS M20 24V (std release) c/w Pushbutton – HFH actuator
24V
M20
Lid and Side
HFH – Stainless Steel Flexible Actuator
Yes




209301
KL4-SS M20 24V (no release)
24V
M20
No Release
No Actuator
No




209301-PB
KL4-SS M20 24V (no release) c/w Pushbutton
24V
M20
No Release
No Actuator
Yes




209301-A
KL4-SS M20 24V (no release) – std actuator
24V
M20
No Release
A – Standard Actuator
No




209301A-PB
KL4-SS M20 24V (no release) c/w Pushbutton – std actuator
24V
M20
No Release
A – Standard Actuator
Yes




209301-F
KL4-SS M20 24V (no release) – flat actuator
24V
M20
No Release
F – Flat Actuator
No




209301F-PB
KL4-SS M20 24V (no release) c/w Pushbutton – flat actuator
24V
M20
No Release
F – Flat Actuator
Yes




209301HF
KL4-SS M20 24V (no release) – HF actuator
24V
M20
No Release
HF – Metal Flexible Actuator
No




209301HF-PB
KL4-SS M20 24V (no release) c/w Pushbutton – HF actuator
24V
M20
No Release
HF – Metal Flexible Actuator
Yes




209301-HFH
KL4-SS M20 24V (no release) – HFH actuator
24V
M20
No Release
HFH – Stainless Steel Flexible Actuator
No




209301HFH-PB
KL4-SS M20 24V (no release) c/w Pushbutton – HFH actuator
24V
M20
No Release
HFH – Stainless Steel Flexible Actuator
Yes




209401
KL4-SS M20 24V (lid release)
24V
M20
Lid Only
No Actuator
No




209401-PB
KL4-SS M20 24V (lid release) c/w Pushbutton
24V
M20
Lid Only
No Actuator
Yes




209401-A
KL4-SS M20 24V (lid release) – std actuator
24V
M20
Lid Only
A – Standard Actuator
No




209401A-PB
KL4-SS M20 24V (lid release) c/w Pushbutton – std actuator
24V
M20
Lid Only
A – Standard Actuator
Yes




209401-F
KL4-SS M20 24V (lid release) – flat actuator
24V
M20
Lid Only
F – Flat Actuator
No




209401F-PB
KL4-SS M20 24V (lid release) c/w Pushbutton – flat actuator
24V
M20
Lid Only
F – Flat Actuator
Yes




209401HF
KL4-SS M20 24V (lid release) – HF actuator
24V
M20
Lid Only
HF – Metal Flexible Actuator
No




209401HF-PB
KL4-SS M20 24V (lid release) c/w Pushbutton – HF actuator
24V
M20
Lid Only
HF – Metal Flexible Actuator
Yes




209401-HFH
KL4-SS M20 24V (lid release) – HFH actuator
24V
M20
Lid Only
HFH – Stainless Steel Flexible Actuator
No




209401HFH-PB
KL4-SS M20 24V (lid release) c/w Pushbutton – HFH actuator
24V
M20
Lid Only
HFH – Stainless Steel Flexible Actuator
Yes




209002
KL4-SS ½”NPT 24V (std release)
24V
½”NPT
Lid and Side
No Actuator
No




209002-PB
KL4-SS ½”NPT 24V (std release) c/w Pushbutton
24V
½”NPT
Lid and Side
No Actuator
Yes




209002-A
KL4-SS ½”NPT 24V (std release) – std actuator
24V
½”NPT
Lid and Side
A – Standard Actuator
No




209002A-PB
KL4-SS ½”NPT 24V (std release) c/w Pushbutton – std actuator
24V
½”NPT
Lid and Side
A – Standard Actuator
Yes




209002-F
KL4-SS ½”NPT 24V (std release) – flat actuator
24V
½”NPT
Lid and Side
F – Flat Actuator
No




209002F-PB
KL4-SS ½”NPT 24V (std release) c/w Pushbutton – flat actuator
24V
½”NPT
Lid and Side
F – Flat Actuator
Yes




209002-HF
KL4-SS ½”NPT 24V (std release) – HF actuator
24V
½”NPT
Lid and Side
HF – Metal Flexible Actuator
No




209002HF-PB
KL4-SS ½”NPT 24V (std release) c/w Pushbutton – HF actuator
24V
½”NPT
Lid and Side
HF – Metal Flexible Actuator
Yes




209002-HFH
KL4-SS ½”NPT 24V (std release) – HFH actuator
24V
½”NPT
Lid and Side
HFH – Stainless Steel Flexible Actuator
No




209002HFH-PB
KL4-SS ½”NPT 24V (std release) c/w Pushbutton – HFH actuator
24V
½”NPT
Lid and Side
HFH – Stainless Steel Flexible Actuator
Yes




209302
KL4-SS ½”NPT 24V (no release)
24V
½”NPT
No Release
No Actuator
No




209302-PB
KL4-SS ½”NPT 24V (no release) c/w Pushbutton
24V
½”NPT
No Release
No Actuator
Yes




209302-A
KL4-SS ½”NPT 24V (no release) – std actuator
24V
½”NPT
No Release
A – Standard Actuator
No




209302A-PB
KL4-SS ½”NPT 24V (no release) c/w Pushbutton – std actuator
24V
½”NPT
No Release
A – Standard Actuator
Yes




209302-F
KL4-SS ½”NPT 24V (no release) – flat actuator
24V
½”NPT
No Release
F – Flat Actuator
No




209302F-PB
KL4-SS ½”NPT 24V (no release) c/w Pushbutton – flat actuator
24V
½”NPT
No Release
F – Flat Actuator
Yes




209302-HF
KL4-SS ½”NPT 24V (no release) – HF actuator
24V
½”NPT
No Release
HF – Metal Flexible Actuator
No




209302HF-PB
KL4-SS ½”NPT 24V (no release) c/w Pushbutton – HF actuator
24V
½”NPT
No Release
HF – Metal Flexible Actuator
Yes




209302-HFH
KL4-SS ½”NPT 24V (no release) – HFH actuator
24V
½”NPT
No Release
HFH – Stainless Steel Flexible Actuator
No




209302HFH-PB
KL4-SS ½”NPT 24V (no release) c/w Pushbutton – HFH actuator
24V
½”NPT
No Release
HFH – Stainless Steel Flexible Actuator
Yes




209402
KL4-SS ½”NPT 24V (lid release)
24V
½”NPT
Lid Only
No Actuator
No




209402-PB
KL4-SS ½”NPT 24V (lid release) c/w Pushbutton
24V
½”NPT
Lid Only
No Actuator
Yes




209402-A
KL4-SS ½”NPT 24V (lid release) – std actuator
24V
½”NPT
Lid Only
A – Standard Actuator
No




209402A-PB
KL4-SS ½”NPT 24V (lid release) c/w Pushbutton – std actuator
24V
½”NPT
Lid Only
A – Standard Actuator
Yes




209402-F
KL4-SS ½”NPT 24V (lid release) – flat actuator
24V
½”NPT
Lid Only
F – Flat Actuator
No




209402F-PB
KL4-SS ½”NPT 24V (lid release) c/w Pushbutton – flat actuator
24V
½”NPT
Lid Only
F – Flat Actuator
Yes




209402-HF
KL4-SS ½”NPT 24V (lid release) – HF actuator
24V
½”NPT
Lid Only
HF – Metal Flexible Actuator
No




209402HF-PB
KL4-SS ½”NPT 24V (lid release) c/w Pushbutton – HF actuator
24V
½”NPT
Lid Only
HF – Metal Flexible Actuator
Yes




209402-HFH
KL4-SS ½”NPT 24V (lid release) – HFH actuator
24V
½”NPT
Lid Only
HFH – Stainless Steel Flexible Actuator
No




209402HFH-PB
KL4-SS ½”NPT 24V (lid release) c/w Pushbutton – HFH actuator
24V
½”NPT
Lid Only
HFH – Stainless Steel Flexible Actuator
Yes







			

				
				
				
				
				
Note
Internal selector switch to be used as either power feed to LED 2 or as a voltage free auxiliary circuit to indicate the lock status.
 
Technical Data
CertificatescULus
Technology	Power to Unlock
Housing Material316 Grade Stainless Steel
Solenoid Voltage (by part number)24V ac/dc or 110V. ac or 230V. ac +/- 10% (12W.)
LED 2 Supply Voltage24V dc +/- 10%
Safety Contacts 11/12 21/22Utilization Category AC15 A300 3A. Thermal Current (Ith) 5A
Overload protection fuse (fuse externally)10A. (FF).
Auxiliary Contact 33/34 (selectable with LED2)24V.ac/dc 0.5A. maximum.
Auxiliary Contact 43/44230V.ac/dc 0.5A. maximum.
Rated Insulation Voltage600VAC
Rated Impulse Withstand Volt2500VAC
Travel for Positive Opening10mm
Approach Speed200mm/m. to 1000mm/s.
Man. Actuation Frequency2 cycle/sec
Actuator entry minimum radius175mm Standard 100mm Flexible
Enclosure ProtectionIP67, IP69K
Operating Temperature-25 ... +40 °C
Holding ForceF1Max: 3000N. Fzh: 2307N
VibrationIEC 68-2-6, 10-55Hz+1Hz, Excursion: 0.35mm, 1 octave/min
Conduit EntryM20 or 1/2" NPT
Fixing4 x M5
 

Information with regard to UL Standards
Enclosure	Type 1
Maximum temperature+40 °C
Terminal Torquee 6 lb ins. (0.7Nm)
Use 16-28AWG stranded copper conductors (rated 90°C).
Intended for same polarity use. A300 Pilot Duty. 240V. 3A
PF 0.38 or greater, tested for 6,000 cycles endurance
Use one polymeric conduit connection.
Not suitable for connection to rigid metal conduit
(Earth bonding terminal inside enclosure if required).
 

			

				
				
				
				
				
			
				
					 
				
				

			
					
				
					 
				
				

			
					
				
					 
				
				

			
		

			

				
				
				
				
				
			
			

				
					
						
					
					Data Sheet				
			

		 			
			

				
					
						
					
					KL4-SS STP 3D Model				
			

		 

			

				
				
				
				
				

	

					
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