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

Guard Locking Safety Switch with Rear Release up to 3000N (KL3-SS-RR)

The KL3-SS guard locking safety interlock features a slimline, mirror polished 316 stainless steel body and a holding force of up to 3000N to keep medium to large guard doors closed until hazards have been removed. A non-latching manual escape release is provided to enable quick release of the switch lock in case of emergency.

  • Body Material: Mirror Polished 316 Grade Stainless Steel
  • Holding Force: F1Max 3000N (300Kg)
  • Actuation: Rotating head for 8 entry positions
  • Ingress Protection: IP69K
  • Conduit: 3 x M20 or ½” NPT (Quick Connect Available)

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.

Product TypePart No.Part Description
KL3-SS-RR215001KL3-SS-RR M20 24v (std release)
KL3-SS-RR215001AKL3-SS-RR M20 24v (std release) – std actuator
KL3-SS-RR215001FKL3-SS-RR M20 24v (std release) – flat actuator
KL3-SS-RR215001HFKL3-SS-RR M20 24v (std release) – HF actuator
KL3-SS-RR215001HFHKL3-SS-RR M20 24v (std release) – HFH actuator
KL3-SS-RR215002KL3-SS-RR ½NPT 24v (std release)
KL3-SS-RR 215002AKL3-SS-RR ½NPT 24v (std release) – std actuator
KL3-SS-RR 215002FKL3-SS-RR ½NPT 24v (std release) – flat actuator
KL3-SS-RR 215002HFKL3-SS-RR ½NPT 24v (std release) – HF actuator
KL3-SS-RR 215002HFHKL3-SS-RR ½NPT 24v (std release) – HFH actuator
KL3-SS-RR 215003KL3-SS-RR QC M23 24v (std release)
KL3-SS-RR215003AKL3-SS-RR QC M23 24v (std release) – std actuator
KL3-SS-RR215003FKL3-SS-RR QC M23 24v (std release) – flat actuator
KL3-SS-RR215003HFKL3-SS-RR QC M23 24v (std release) – HF actuator
KL3-SS-RR215003HFHKL3-SS-RR QC M23 24v (std release) – HFH actuator
KL3-SS-RR215004KL3-SS-RR M20 110v (std release)
KL3-SS-RR215004AKL3-SS-RR M20 110v (std release) – std actuator
KL3-SS-RR215004FKL3-SS-RR M20 110v (std release) – flat actuator
KL3-SS-RR215004HFKL3-SS-RR M20 110v (std release) – HF actuator
KL3-SS-RR215004HFHKL3-SS-RR M20 110v (std release) – HFH actuator
KL3-SS-RR215005KL3-SS-RR ½NPT 110v (std release)
KL3-SS-RR 215005AKL3-SS-RR ½NPT 110v (std release) – std actuator
KL3-SS-RR 215005FKL3-SS-RR ½NPT 110v (std release) – flat actuator
KL3-SS-RR 215005HFKL3-SS-RR ½NPT 110v (std release) – HF actuator
KL3-SS-RR 215005HFHKL3-SS-RR ½NPT 110v (std release) – HFH actuator
KL3-SS-RR 215006KL3-SS-RR QC M23 110v (std release)
KL3-SS-RR 215006AKL3-SS-RR QC M23 110v (std release) – std actuator
KL3-SS-RR 215006FKL3-SS-RR QC M23 110v (std release) – flat actuator
KL3-SS-RR 215006HFKL3-SS-RR QC M23 110v (std release) – HF actuator
KL3-SS-RR 215006HFHKL3-SS-RR QC M23 110v (std release) – HFH actuator
KL3-SS-RR 215007KL3-SS-RR M20 230v (std release)
KL3-SS-RR  215007AKL3-SS-RR M20 230v (std release) – std actuator
KL3-SS-RR  215007FKL3-SS-RR M20 230v (std release) – flat actuator
KL3-SS-RR  215007HFKL3-SS-RR M20 230v (std release) – HF actuator
KL3-SS-RR  215007HFHKL3-SS-RR M20 230v (std release) – HFH actuator
KL3-SS-RR  215008KL3-SS-RR ½NPT 230v (std release)
KL3-SS-RR 215008AKL3-SS-RR ½NPT 230v (std release) – std actuator
KL3-SS-RR 215008FKL3-SS-RR ½NPT 230v (std release) – flat actuator
KL3-SS-RR 215008HFKL3-SS-RR ½NPT 230v (std release) – HF actuator
KL3-SS-RR 215008HFHKL3-SS-RR ½NPT 230v (std release) – HFH actuator
KL3-SS-RR215301KL3-SS-RR M20 24v (no release)
KL3-SS-RR 215301AKL3-SS-RR M20 24v (no release) – std actuator
KL3-SS-RR 215301FKL3-SS-RR M20 24v (no release) – flat actuator
KL3-SS-RR 215301HFKL3-SS-RR M20 24v (no release) – HF actuator
KL3-SS-RR 215301HFHKL3-SS-RR M20 24v (no release) – HFH actuator
KL3-SS-RR 215302KL3-SS-RR ½NPT 24v (no release)
KL3-SS-RR215302AKL3-SS-RR ½NPT 24v (no release) – std actuator
KL3-SS-RR215302FKL3-SS-RR ½NPT 24v (no release) – flat actuator
KL3-SS-RR215302HFHKL3-SS-RR ½NPT 24v (no release) – HFH actuator
KL3-SS-RR215303KL3-SS-RR QC M23 24v (no release)
KL3-SS-RR215303AKL3-SS-RR QC M23 24v (no release) – std actuator
KL3-SS-RR215303FKL3-SS-RR QC M23 24v (no release) – flat actuator
KL3-SS-RR215303HFKL3-SS-RR QC M23 24v (no release) – HF actuator
KL3-SS-RR215303HFHKL3-SS-RR QC M23 24v (no release) – HFH actuator
KL3-SS-RR215304KL3-SS-RR M20 110v (no release)
KL3-SS-RR215304AKL3-SS-RR M20 110v (no release) – std actuator
KL3-SS-RR215304FKL3-SS-RR M20 110v (no release) – flat actuator
KL3-SS-RR215304HFKL3-SS-RR M20 110v (no release) – HF actuator
KL3-SS-RR215304HFHKL3-SS-RR M20 110v (no release) – HFH actuator
KL3-SS-RR215305KL3-SS-RR ½NPT 110v (no release)
KL3-SS-RR215305AKL3-SS-RR ½NPT 110v (no release) – std actuator
KL3-SS-RR215305FKL3-SS-RR ½NPT 110v (no release) – flat actuator
KL3-SS-RR215305HFKL3-SS-RR ½NPT 110v (no release) – HF actuator
KL3-SS-RR215305HFHKL3-SS-RR ½NPT 110v (no release) – HFH actuator
KL3-SS-RR215306KL3-SS-RR QC M23 110v (no release)
KL3-SS-RR215306AKL3-SS-RR QC M23 110v (no release) – std actuator
KL3-SS-RR215306FKL3-SS-RR QC M23 110v (no release) – flat actuator
KL3-SS-RR215306HFKL3-SS-RR QC M23 110v (no release) – HF actuator
KL3-SS-RR215306HFHKL3-SS-RR QC M23 110v (no release) – HFH actuator
KL3-SS-RR215307KL3-SS-RR M20 230v (no release)
KL3-SS-RR215307AKL3-SS-RR M20 230v (no release) – std actuator
KL3-SS-RR215307FKL3-SS-RR M20 230v (no release) – flat actuator
KL3-SS-RR215307HFKL3-SS-RR M20 230v (no release) – HF actuator
KL3-SS-RR215307HFHKL3-SS-RR M20 230v (no release) – HFH actuator
KL3-SS-RR215308KL3-SS-RR ½NPT 230v (no release)
KL3-SS-RR 215308AKL3-SS-RR ½NPT 230v (no release) – std actuator
KL3-SS-RR 215308FKL3-SS-RR ½NPT 230v (no release) – flat actuator
KL3-SS-RR 215308HFKL3-SS-RR ½NPT 230v (no release) – HF actuator
KL3-SS-RR 215308HFHKL3-SS-RR ½NPT 230v (no release) – HFH actuator
KL3-SS-RR 215309KL3-SS-RR QC M23 230v (no release)
KL3-SS-RR215309AKL3-SS-RR QC M23 230v (no release) – std actuator
KL3-SS-RR215309FKL3-SS-RR QC M23 230v (no release) – flat actuator
KL3-SS-RR215309HFKL3-SS-RR QC M23 230v (no release) – HF actuator
KL3-SS-RR215309HFHKL3-SS-RR QC M23 230v (no release) – HFH actuator
KL3-SS-RR215401KL3-SS-RR M20 24v (lid release)
KL3-SS-RR 215401AKL3-SS-RR M20 24v (lid release) – std actuator
KL3-SS-RR 215401FKL3-SS-RR M20 24v (lid release) – flat actuator
KL3-SS-RR 215401HFKL3-SS-RR M20 24v (lid release) – HF actuator
KL3-SS-RR 215401HFHKL3-SS-RR M20 24v (lid release) – HFH actuator
KL3-SS-RR 215402KL3-SS-RR ½”NPT 24v (Release Lid Only)
KL3-SS-RR215402AKL3-SS-RR ½NPT 24v (lid release) – std actuator
KL3-SS-RR215402FKL3-SS-RR ½NPT 24v (lid release) – flat actuator
KL3-SS-RR215402HFKL3-SS-RR ½NPT 24v (lid release) – HF actuator
KL3-SS-RR215402HFHKL3-SS-RR ½NPT 24v (lid release) – HFH actuator
KL3-SS-RR215403KL3-SS-RR QC M23 24v (lid release)
KL3-SS-RR215403AKL3-SS-RR QC M23 24v (lid release) – std actuator
KL3-SS-RR215403FKL3-SS-RR QC M23 24v (lid release) – flat actuator
KL3-SS-RR215403HFKL3-SS-RR QC M23 24v (lid release) – HF actuator
KL3-SS-RR215403HFHKL3-SS-RR QC M23 24v (lid release) – HFH actuator
KL3-SS-RR215404KL3-SS-RR M20 110v (lid release)
KL3-SS-RR215404AKL3-SS-RR M20 110v (lid release) – std actuator
KL3-SS-RR215404FKL3-SS-RR M20 110v (lid release) – flat actuator
KL3-SS-RR215404HFKL3-SS-RR M20 110v (lid release) – HF actuator
KL3-SS-RR215404HFHKL3-SS-RR M20 110v (lid release) – HFH actuator
KL3-SS-RR215405KL3-SS-RR ½NPT 110v (lid release)
KL3-SS-RR215405AKL3-SS-RR ½NPT 110v (lid release) – std actuator
KL3-SS-RR215405FKL3-SS-RR ½NPT 110v (lid release) – flat actuator
KL3-SS-RR215405HFKL3-SS-RR ½NPT 110v (lid release) – HF actuator
KL3-SS-RR215405HFHKL3-SS-RR ½NPT 110v (lid release) – HFH actuator
KL3-SS-RR215406KL3-SS-RR QC M23 110v (lid release)
KL3-SS-RR215406AKL3-SS-RR QC M23 110v (lid release) – std actuator
KL3-SS-RR215406FKL3-SS-RR QC M23 110v (lid release) – flat actuator
KL3-SS-RR215406HFKL3-SS-RR QC M23 110v (lid release) – HF actuator
KL3-SS-RR215406HFHKL3-SS-RR QC M23 110v (lid release) – HFH actuator
KL3-SS-RR215407KL3-SS-RR M20 230v (lid release)
KL3-SS-RR215407AKL3-SS-RR M20 230v (lid release) – std actuator
KL3-SS-RR215407FKL3-SS-RR M20 230v (lid release) – flat actuator
KL3-SS-RR215407HFKL3-SS-RR M20 230v (lid release) – HF actuator
KL3-SS-RR215407HFHKL3-SS-RR M20 230v (lid release) – HFH actuator
KL3-SS-RR215408KL3-SS-RR ½NPT 230v (lid release)
KL3-SS-RR215408AKL3-SS-RR ½NPT 230v (lid release) – std actuator
KL3-SS-RR215408FKL3-SS-RR ½NPT 230v (lid release) – flat actuator
KL3-SS-RR215408HFKL3-SS-RR ½NPT 230v (lid release) – HF actuator
KL3-SS-RR215408HFHKL3-SS-RR ½NPT 230v (lid release) – HFH actuator
KL3-SS-RR215409KL3-SS-RR QC M23 230v (lid release)
KL3-SS-RR215409AKL3-SS-RR QC M23 230v (lid release) – std actuator
KL3-SS-RR215409FKL3-SS-RR QC M23 230v (lid release) – flat actuator
KL3-SS-RR215409HFKL3-SS-RR QC M23 230v (lid release) – HF actuator
KL3-SS-RR215409HFHKL3-SS-RR QC M23 230v (lid release) – HFH actuator

Technical Data
CertificatescULus
TechnologyPower 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 externally10A. (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
EnclosureType 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).

KL3-SS-RR Rear Escape Release
Where the Risk Assessment for the application permits, a non latching manual escape release version (KL3-SS-RR) enables quick release of the switch lock in case of emergency. The switch can be mounted such that access to the release button is available from inside the active guard area. Pressing and holding the release button will release the lock mechanism and open the lock monitoring contacts, whilst the guard can be pushed open. Measures should be taken to reduce the risk of improper activation.