with extended range of applications

All-purpose door interlock for single-leaf doors, which can be adapted individually by several configurations and adaptation possibilities. The connecting terminals for the switch for locking mechanism, door and auxiliary switches are easily accessible on a terminal block and can be connected comfortably.

Door interlock DLF1-L-X15(u).10

Door interlock DLF1-L-X15(u).10

Dimensions DLF1-R-X20(u).10



  • metal housing with high stability
  • transparent cover for optimal function control
  • silent due to buffers in both directions
  • maintenance-free by permanent lubrication with high quality lubricants (up to -30 °C)
  • oiled felt ring at latch bolt for lubrication as well as for sealing against dust and dirt (at X-dimension ≥ 10 mm)
  • constrained faulty closure at DLF1 for use in passenger lifts
  • contacts with solid fine silver plating for a reliable function even at low voltages and currents
  • extensive range of accessories


special features:

  • terminal block with all electrical connections
  • optional: auxiliary switch
    as normally closed contact and/or normally open contact, with two galvanically isolated contacts
    with positively driven contacts
    with different switching points
  • connection for bowden cable or cable pull for actuation or unlocking available, e.g.
    application 1: unlocking from the pit ladder (< 1.80 m according to EN 81-20)
    application 2: offset emergency release triangle (< 2 m according to EN 81-20)
    application 3: actuation by bowden cable as alternative to pull rod
  • compatible with no longer available KRONENBERG door interlocks (TV1, TVL1)

Order information codes

Technical data

norms EN 81-20, EN 81-50, EN 81-21, EN 60947-5-1
certificates type approval certificate:
EU-DL 013 (DLF1) and EU-DL 015 (DL1)
switching capacity:
switch for locking mechanism
monitoring switch
auxiliary switch .9/…
Ui = 250 V Ith = 10 A Uimp = 4 kV
AC-15: Ue = 230 V Ie = 2 A DC-13: Ue = 200 V Ie = 2 A
AC-15: Ue = 230 V Ie = 2 A DC-13: Ue = 200 V Ie = 0.5 A
AC-15: Ue = 230 V Ie = 2 A DC-13: Ue = 200 V Ie = 0.5 A
short-circuit capacity T 10 A F 16 A
contact material fine silver
actuation torque (typical)
actuation force (typical)
max. force in non-operating state
1.5 Nm at the roller lever
40 N at the pull rod     17.5 N at the roller lever (at 35 mm stroke)
5 N at the pull rod
connection by screw terminal max. 2.5 mm²
cable entry Ø = 23 mm with rubber grommet
level of protection IP40 (IP20 at .60 and .70)
ambient air temperature -10 °C up to +65 °C (special version up to -30 °C)
weight 850 g up to 1100 g (according to version)



Operating instructions

Declaration of conformity
DE / EN / FR

Declaration of conformity
DE / EN / IT

Declaration of conformity
DE / EN / CZ

Declaration of conformity
DE / EN / ES

Declaration of conformity
DE / EN / RU

Declaration of conformity

EU Type-examination certificate

EU Type-examination certificate

UK-Type-examination certificate

UK-Type-examination certificate