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

KL4-SS QC-M23 Guard Locking Safety Switch with M23 Quick Connect and Optional Pushbutton
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KL4-SS QC-M23 Guard Locking Safety Switch with M23 Quick Connect and 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 M23 Quick Connect 12-PIN Male
    • 



				

			

			

				
				
				
				
			

				

				
				
				
				
				

				
				
				
				
				
				

					

				
				
				
				
				



Part Number
Part Description
Voltage
Connection Type
Auxiliary Override
Actuator
Pushbutton






209003
KL4-SS QC-M23 24V (std release)
24V
QC-M23
Lid and Side
No Actuator
No




209003-PB
KL4-SS QC-M23 24V (std release) c/w Pushbutton
24V
QC-M23
Lid and Side
No Actuator
Yes




209003A
KL4-SS QC-M23 24V (std release) – std actuator
24V
QC-M23
Lid and Side
A – Standard Actuator
No




209003A-PB
KL4-SS QC-M23 24V (std release) c/w Pushbutton – std actuator
24V
QC-M23
Lid and Side
A – Standard Actuator
Yes




209003F
KL4-SS QC-M23 24V (std release) – flat actuator
24V
QC-M23
Lid and Side
F – Flat Actuator
No




209003F-PB
KL4-SS QC-M23 24V (std release) c/w Pushbutton – flat actuator
24V
QC-M23
Lid and Side
F – Flat Actuator
Yes




209003HF
KL4-SS QC-M23 24V (std release) – HF actuator
24V
QC-M23
Lid and Side
HF – Metal Flexible Actuator
No




209003HF-PB
KL4-SS QC-M23 24V (std release) c/w Pushbutton – HF actuator
24V
QC-M23
Lid and Side
HF – Metal Flexible Actuator
Yes




209003HFH
KL4-SS QC-M23 24V (std release) – HFH actuator
24V
QC-M23
Lid and Side
HFH – Stainless Steel Flexible Actuator
No




209003HFH-PB
KL4-SS QC-M23 24V (std release) c/w Pushbutton – HFH actuator
24V
QC-M23
Lid and Side
HFH – Stainless Steel Flexible Actuator
Yes




209303
KL4-SS QC-M23 24V (no release)
24V
QC-M23
No Release
No Actuator
No




209303-PB
KL4-SS QC-M23 24V (no release) c/w Pushbutton
24V
QC-M23
No Release
No Actuator
Yes




209303A
KL4-SS QC-M23 24V (no release) – std actuator
24V
QC-M23
No Release
A – Standard Actuator
No




209303A-PB
KL4-SS QC-M23 24V (no release) c/w Pushbutton – std actuator
24V
QC-M23
No Release
A – Standard Actuator
Yes




209303F
KL4-SS QC-M23 24V (no release) – flat actuator
24V
QC-M23
No Release
F – Flat Actuator
No




209303F-PB
KL4-SS QC-M23 24V (no release) c/w Pushbutton – flat actuator
24V
QC-M23
No Release
F – Flat Actuator
Yes




209303HF
KL4-SS QC-M23 24V (no release) – HF actuator
24V
QC-M23
No Release
HF – Metal Flexible Actuator
No




209303HF-PB
KL4-SS QC-M23 24V (no release) c/w Pushbutton – HF actuator
24V
QC-M23
No Release
HF – Metal Flexible Actuator
Yes




209303HFH
KL4-SS QC-M23 24V (no release) – HFH actuator
24V
QC-M23
No Release
HFH – Stainless Steel Flexible Actuator
No




209303HFH-PB
KL4-SS QC-M23 24V (no release) c/w Pushbutton – HFH actuator
24V
QC-M23
No Release
HFH – Stainless Steel Flexible Actuator
Yes




209403
KL4-SS QC-M23 24V (lid release)
24V
QC-M23
Lid Only
No Actuator
No




209403-PB
KL4-SS QC-M23 24V (lid release) c/w Pushbutton
24V
QC-M23
Lid Only
No Actuator
Yes




209403A
KL4-SS QC-M23 24V (lid release) – std actuator
24V
QC-M23
Lid Only
A – Standard Actuator
No




209403A-PB
KL4-SS QC-M23 24V (lid release) c/w Pushbutton – std actuator
24V
QC-M23
Lid Only
A – Standard Actuator
Yes




209403F
KL4-SS QC-M23 24V (lid release) – flat actuator
24V
QC-M23
Lid Only
F – Flat Actuator
No




209403F-PB
KL4-SS QC-M23 24V (lid release) c/w Pushbutton – flat actuator
24V
QC-M23
Lid Only
F – Flat Actuator
Yes




209403HF
KL4-SS QC-M23 24V (lid release) – HF actuator
24V
QC-M23
Lid Only
HF – Metal Flexible Actuator
No




209403HF-PB
KL4-SS QC-M23 24V (lid release) c/w Pushbutton – HF actuator
24V
QC-M23
Lid Only
HF – Metal Flexible Actuator
Yes




209403HFH
KL4-SS QC-M23 24V (lid release) – HFH actuator
24V
QC-M23
Lid Only
HFH – Stainless Steel Flexible Actuator
No




209403HFH-PB
KL4-SS QC-M23 24V (lid release) c/w Pushbutton – HFH actuator
24V
QC-M23
Lid Only
HFH – Stainless Steel Flexible Actuator
Yes




209006
KL4-SS QC-M23 110V (std release)
110V
QC-M23
Lid and Side
No Actuator
No




209006-PB
KL4-SS QC-M23 110V (std release) c/w Pushbutton
110V
QC-M23
Lid and Side
No Actuator
Yes




209006A
KL4-SS QC-M23 110V (std release) – std actuator
110V
QC-M23
Lid and Side
A – Standard Actuator
No




209006A-PB
KL4-SS QC-M23 110V (std release) c/w Pushbutton – std actuator
110V
QC-M23
Lid and Side
A – Standard Actuator
Yes




209006F
KL4-SS QC-M23 110V (std release) – flat actuator
110V
QC-M23
Lid and Side
F – Flat Actuator
No




209006F-PB
KL4-SS QC-M23 110V (std release) c/w Pushbutton – flat actuator
110V
QC-M23
Lid and Side
F – Flat Actuator
Yes




209006HF
KL4-SS QC-M23 110V (std release) – HF actuator
110V
QC-M23
Lid and Side
HF – Metal Flexible Actuator
No




209006HF-PB
KL4-SS QC-M23 110V (std release) c/w Pushbutton – HF actuator
110V
QC-M23
Lid and Side
HF – Metal Flexible Actuator
Yes




209006HFH
KL4-SS QC-M23 110V (std release) – HFH actuator
110V
QC-M23
Lid and Side
HFH – Stainless Steel Flexible Actuator
No




209006HFH-PB
KL4-SS QC-M23 110V (std release) c/w Pushbutton – HFH actuator
110V
QC-M23
Lid and Side
HFH – Stainless Steel Flexible Actuator
Yes




209306
KL4-SS QC-M23 110V (no release)
110V
QC-M23
No Release
No Actuator
No




209306-PB
KL4-SS QC-M23 110V (no release) c/w Pushbutton
110V
QC-M23
No Release
No Actuator
Yes




209306A
KL4-SS QC-M23 110V (no release) – std actuator
110V
QC-M23
No Release
A – Standard Actuator
No




209306A-PB
KL4-SS QC-M23 110V (no release) c/w Pushbutton – std actuator
110V
QC-M23
No Release
A – Standard Actuator
Yes




209306F
KL4-SS QC-M23 110V (no release) – flat actuator
110V
QC-M23
No Release
F – Flat Actuator
No




209306F-PB
KL4-SS QC-M23 110V (no release) c/w Pushbutton – flat actuator
110V
QC-M23
No Release
F – Flat Actuator
Yes




209306HF
KL4-SS QC-M23 110V (no release) – HF actuator
110V
QC-M23
No Release
HF – Metal Flexible Actuator
No




209306HF-PB
KL4-SS QC-M23 110V (no release) c/w Pushbutton – HF actuator
110V
QC-M23
No Release
HF – Metal Flexible Actuator
Yes




209306HFH
KL4-SS QC-M23 110V (no release) – HFH actuator
110V
QC-M23
No Release
HFH – Stainless Steel Flexible Actuator
No




209306HFH-PB
KL4-SS QC-M23 110V (no release) c/w Pushbutton – HFH actuator
110V
QC-M23
No Release
HFH – Stainless Steel Flexible Actuator
Yes




209406
KL4-SS QC-M23 110V (lid release)
110V
QC-M23
Lid Only
No Actuator
No




209406-PB
KL4-SS QC-M23 110V (lid release) c/w Pushbutton
110V
QC-M23
Lid Only
No Actuator
Yes




209406A
KL4-SS QC-M23 110V (lid release) – std actuator
110V
QC-M23
Lid Only
A – Standard Actuator
No




209406A-PB
KL4-SS QC-M23 110V (lid release) c/w Pushbutton – std actuator
110V
QC-M23
Lid Only
A – Standard Actuator
Yes




209406F
KL4-SS QC-M23 110V (lid release) – flat actuator
110V
QC-M23
Lid Only
F – Flat Actuator
No




209406F-PB
KL4-SS QC-M23 110V (lid release) c/w Pushbutton – flat actuator
110V
QC-M23
Lid Only
F – Flat Actuator
Yes




209406HF
KL4-SS QC-M23 110V (lid release) – HF actuator
110V
QC-M23
Lid Only
HF – Metal Flexible Actuator
No




209406HF-PB
KL4-SS QC-M23 110V (lid release) c/w Pushbutton – HF actuator
110V
QC-M23
Lid Only
HF – Metal Flexible Actuator
Yes




209406HFH
KL4-SS QC-M23 110V (lid release) – HFH actuator
110V
QC-M23
Lid Only
HFH – Stainless Steel Flexible Actuator
No




209406HFH-PB
KL4-SS QC-M23 110V (lid release) c/w Pushbutton – HFH actuator
110V
QC-M23
Lid Only
HFH – Stainless Steel Flexible Actuator
Yes




209009
KL4-SS QC-M23 230V (std release)
230V
QC-M23
Lid and Side
No Actuator
No




209009-PB
KL4-SS QC-M23 230V (std release) c/w Pushbutton
230V
QC-M23
Lid and Side
No Actuator
Yes




209009A
KL4-SS QC-M23 230V (std release) – std actuator
230V
QC-M23
Lid and Side
A – Standard Actuator
No




209009A-PB
KL4-SS QC-M23 230V (std release) c/w Pushbutton – std actuator
230V
QC-M23
Lid and Side
A – Standard Actuator
Yes




209009F
KL4-SS QC-M23 230V (std release) – flat actuator
230V
QC-M23
Lid and Side
F – Flat Actuator
No




209009F-PB
KL4-SS QC-M23 230V (std release) c/w Pushbutton – flat actuator
230V
QC-M23
Lid and Side
F – Flat Actuator
Yes




209009HF
KL4-SS QC-M23 230V (std release) – HF actuator
230V
QC-M23
Lid and Side
HF – Metal Flexible Actuator
No




209009HF-PB
KL4-SS QC-M23 230V (std release) c/w Pushbutton – HF actuator
230V
QC-M23
Lid and Side
HF – Metal Flexible Actuator
Yes




209009HFH
KL4-SS QC-M23 230V (std release) – HFH actuator
230V
QC-M23
Lid and Side
HFH – Stainless Steel Flexible Actuator
No




209009HFH-PB
KL4-SS QC-M23 230V (std release) c/w Pushbutton – HFH actuator
230V
QC-M23
Lid and Side
HFH – Stainless Steel Flexible Actuator
Yes




209309
KL4-SS QC-M23 230V (no release)
230V
QC-M23
No Release
No Actuator
No




209309-PB
KL4-SS QC-M23 230V (no release) c/w Pushbutton
230V
QC-M23
No Release
No Actuator
Yes




209309A
KL4-SS QC-M23 230V (no release) – std actuator
230V
QC-M23
No Release
A – Standard Actuator
No




209309A-PB
KL4-SS QC-M23 230V (no release) c/w Pushbutton – std actuator
230V
QC-M23
No Release
A – Standard Actuator
Yes




209309F
KL4-SS QC-M23 230V (no release) – flat actuator
230V
QC-M23
No Release
F – Flat Actuator
No




209309F-PB
KL4-SS QC-M23 230V (no release) c/w Pushbutton – flat actuator
230V
QC-M23
No Release
F – Flat Actuator
Yes




209309HF
KL4-SS QC-M23 230V (no release) – HF actuator
230V
QC-M23
No Release
HF – Metal Flexible Actuator
No




209309HF-PB
KL4-SS QC-M23 230V (no release) c/w Pushbutton – HF actuator
230V
QC-M23
No Release
HF – Metal Flexible Actuator
Yes




209309HFH
KL4-SS QC-M23 230V (no release) – HFH actuator
230V
QC-M23
No Release
HFH – Stainless Steel Flexible Actuator
No




209309HFH-PB
KL4-SS QC-M23 230V (no release) c/w Pushbutton – HFH actuator
230V
QC-M23
No Release
HFH – Stainless Steel Flexible Actuator
Yes




209409
KL4-SS QC-M23 230V (lid release)
230V
QC-M23
Lid Only
No Actuator
No




209409-PB
KL4-SS QC-M23 230V (lid release) c/w Pushbutton
230V
QC-M23
Lid Only
No Actuator
Yes




209409A
KL4-SS QC-M23 230V (lid release) – std actuator
230V
QC-M23
Lid Only
A – Standard Actuator
No




209409A-PB
KL4-SS QC-M23 230V (lid release) c/w Pushbutton – std actuator
230V
QC-M23
Lid Only
A – Standard Actuator
Yes




209409F
KL4-SS QC-M23 230V (lid release) – flat actuator
230V
QC-M23
Lid Only
F – Flat Actuator
No




209409F-PB
KL4-SS QC-M23 230V (lid release) c/w Pushbutton – flat actuator
230V
QC-M23
Lid Only
F – Flat Actuator
Yes




209409HF
KL4-SS QC-M23 230V (lid release) – HF actuator
230V
QC-M23
Lid Only
HF – Metal Flexible Actuator
No




209409HF-PB
KL4-SS QC-M23 230V (lid release) c/w Pushbutton – HF actuator
230V
QC-M23
Lid Only
HF – Metal Flexible Actuator
Yes




209409HFH
KL4-SS QC-M23 230V (lid release) – HFH actuator
230V
QC-M23
Lid Only
HFH – Stainless Steel Flexible Actuator
No




209409HFH-PB
KL4-SS QC-M23 230V (lid release) c/w Pushbutton – HFH actuator
230V
QC-M23
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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