Safety switches with guard locking

Work safely and productively - with safety switches from Pilz

Product picture, several safety switches with guard locking

Movable guards such as swing gates and sliding gates, flaps or covers, can be found in almost every application. If there are dangerous overrun movements, a safety locking device with appropriate manipulation protection in accordance with EN ISO 14119 is required. 

The safety gate cannot be opened until all hazardous machine movements are stopped. A restart is not possible until the safety gate is closed and locked. It must not be possible to either defeat or manipulate the safeguards. 

Pilz safety switches with guard locking offer the right solution for both process and personnel protection – for safe, productive working.

Safe guard locking. Efficient production.

  • Comprehensive portfolio of switches offers a high level of flexibility during the machine design
  • Designed for all applications up to PL e of EN ISO 13849 or SIL 3 of EN IEC 62061
  • Saves time and costs thanks to simple installation and the option for safe series connection with diagnostics
  • Protection against hazardous machine movements due to monitoring of safe interlocking and safe guard locking
  • High level of safety and productivity: manipulation protection prevents unwanted production interruptions; coding freely selectable
  • Individual safety gate solution tailored to the application
  • High availability and long service life of the sensors
A production employee in front of the machine that uses safety switches with guard locking.

Protect human and machine

Are you looking for the right safeguard for your movable guard? The question regarding the type of safeguard, the required locking device and the performance level are the basis for selecting the right safety locking device: 

Icon with symbols of safeguards

Type of safeguard

Is it an accessible or a non-accessible safeguard? Accessible safeguards are generally larger swing and sliding gates; non-accessible safeguards are covers or flaps, for example.

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Process guarding or safe guard locking 

The question regarding the type of guard locking depends on the stopping time. If the time to reach the danger zone is longer than the stopping time, process guarding is sufficient. If the intervention time is shorter than the stopping time, however, safe guard locking (personnel protection) is required.

Icon with letters PL

Performance Level

The level of protection is defined in accordance with EN ISO 13849-1 or EN 62061. The key factors for this calculation, for example, are the severity of the potential injuries, frequency of exposure to the risk and ability to avoid the risks.


More information for you to read:

White paper on safety locking devices

We have summarised all the key information about safety locking devices in the white paper. Discover everything you need to know about the various safety functions, and how to install them safely.

Download white paper

Leaflet: Safety locking devices

In our new leaflet “Safety locking devices – for greater safety and productivity”, you’ll also find interesting information on the application options for the individual products.

Download brochure

Overview of Pilz safety switches with guard locking

We offer a versatile portfolio of safety locking devices to safeguard movable guards. They provide economical and effective monitoring of doors in safety fences, as well as covers and flaps: 


PSENmech 5

PSENslock 2 PSENmlock mini PSENmlock PSENsgate
Applications Accessible and non-accessible safeguards Accessible and non-accessible safeguards Small non-accessible safeguards Accessible and non-accessible safeguards Large accessible safeguards
Operating principle Electromechanical Transponder Transponder Transponder Transponder
Guard locking principle Normally de-energised mode,​
normally energised mode
Normally de-energised mode

Bistable principle


Bistable principle Bistable principle
Safety functions Process guarding, safe guard locking (personnel protection) Process guarding, safe guard locking (personnel protection) Safe guard locking (personnel protection) Safe guard locking (personnel protection) Safe guard locking (personnel protection)
Interlock classification to EN ISO 13849-1 (gate monitoring) PL c,
with fault exclusion PL d
PL e, Category 4 PL d, Category 3 PL e, Category 4 PL e, Category 4
Guard locking classification to EN ISO 13849-1 (guard locking monitoring) PL c,
with fault exclusion PL d
PL d, Category 2 PL d, Category 3 PL e, Category 4 PL e, Category 4
Holding force FZH: 1500 N
  • F1max: 1000/ 2000 N (process protection)
  • F1max: 2000 N (personnel protection)
1950 N (F1max: 3900 N) FZH: 7500 N FZH: 2000 N
Protection against manipulation Low Up to high Up to high Up to high Up to high
Auxiliary release Integrated - Integrated Integrated Integrated
Escape release Optional (PSEN me5) - - Optional Integrated
Emergency unlocking Optional (PSEN me5) - - Optional -
Link to the products PSENmech 5 PSENslock 2 PSENmlock mini PSENmlock PSENsgate


Safe complete solutions for your safeguard

Reliable and efficient protection of safeguards includes not only the safety locking device but also an additional control unit and suitable wiring and control technology. Pilz safety sensors can be connected in series and are compatible with other products and interfaces. They perfectly fit into their plant environment and also enable Pilz components to be retrofitted to your plant.

Individual safety gate solution with access permission

  • Safety switches with guard locking for process and personnel protection 
  • Simple operation with the pushbutton unit PITgatebox, with integrated access management as an option 
  • Additional accessories: from compatible door handle to escape release 
  • Comprehensive diagnostic and status information with Safety Device Diagnostics (SDD) 
  • Configurable safe small controller PNOZmulti 2
Graphic of an application with safeguard

Our product range: Safety switches with guard locking


Pilz Ireland
Business and Technology Park, Model Farm Road

Telephone: +353 21 4346535

Technical Support

Telephone: +353 21 4804983