Mortice lock TKZ40/20 R/L ER PZ (Art. no. 45551)

For a safe feeling: The mortice lock locks automatically and can be opened from the inside without a key thanks to the anti-panic function.

Mortice lock TKZ40/20 R/L ER PZ (Art. no. 45551)


You have to be able to trust a lock. The mortice lock disappears completely into the door and locks automatically.

A safe feeling even when you are not at home. With the TKZ40 mortice lock you can rely on secure locking. After closing, the door is automatically locked. The lock convinces with high wear resistance. After mounting, it is invisible. Another practical feature is the anti-panic function, which allows the mortice lock to be opened from the inside without a key. It is suitable for flat entrance doors with a distance measurement of 72 millimetres.


  • For standard door cylinders (no free-turning cam needed)
  • Latch brass nickel-plated, square bolt malleable iron
  • High capacity of resistance by use of high quality materials
  • With anti-panic feature (can be opened with the handle from the inside)
  • Steel bolt with 21 mm protrusion
  • Stainless-steel forend

Operation and use:

  • For internal doors/apartment doors
  • Self-locking when closing the door
  • Can be used right and left (forend and latch reversible)
  • Forend 20 x 235mm (round)
Technical drawing
Art. no.: 45551
Level: 9
Backset: 55 mm
Distance measure: 72 mm
No. of keys supplied: without key
Packaging: sleeve
Weight: 651 g
color: stainless steel


Mortice locks

The mortice lock is activated by the door cylinder – it may be invisible but it has a crucial function. Just as it's impossible to start an engine without a starter motor, a door cannot be locked without a mortise lock. ABUS mortise locks that meet DIN 18251 ABUS offers a wide range of mortise locks that meet DIN 18251 with solutions for a variety of needs, e.g. fire doors or doors with narrow profiles. The premium product is the TKZ 40 – ...
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