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 60947-5-1
certificates type approval certificate:
EU-DL 013 (DLF1) and EU-DL 015 (DL1)
UK-DL 013 (DLF1) and UK-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)


DLF1 un DL1


DLF1 un DL1

Operating instructions

Declaration of conformity

Declaration of conformity

Declaration of conformity

Declaration of conformity

Declaration of conformity

Declaration of conformity

EU Type-examination certificate

EU Type-examination certificate

UK-Type-examination certificate

UK-Type-examination certificate