Abloy Protec Locks DECODER
Abloy Protec Locks DECODER is a unique locksmith tool which can open & decode ABLOY PROTEC locks!!
- code readers – 7 readers with ergonomic aluminium handles
- code reader guide
- set up key
- pins in all dimensions to make a working key without any cutting machine
- code chart
- transport box.
Te Abloy Disc system is made of 10 code discs, 1 bottom individual profile disc. The code discs have 6 code cuts. The lock is well protected against random key use, picking and bumping. Hard metal plate, 2 return bars and 2 profile protecting steel balls protect all discs. The only way to open this lock is by decoding it. The locks are HIGH security grade.
TRAINING CLASS IS ESSENTIAL FOR THE PROFESSIONAL ABLOY PROTEC LOCKS DECODER!!
ALL about PROTEC:
In 2001 Abloy launched their latest system, the Abloy Protec, a patented cylinder system. This system
represents the pinnacle in the development of the rotating disc principle. The cylinder contains 11 discs
which means that there are theoretically possible 1.97 billion key combinations. Abloy also claims that this
lock is virtually pickproof.
The disc principle guarantees a durable and reliable operation.
The lock works on the same principle as all Abloy locks, the 11 discs must be aligned properly so that a
locking bar can drop in and the cylinder drum can then rotate in the cylinder housing. Besides the 11
discs there are many more security features which I will be describing below.
Exploded-view of the Abloy Protec with key
A note about the discs in Protec
To show the difference between the two systems, review the detailed pictures of the Disklock Pro discs
and the Protec discs. Although the parts may look similar, none of the parts in the Disklock Pro or the
Protec system may be interchanged with each other.
Detailed picture of Disklock Pro and Protec discs.
note: the Profiled 0-disc is also called Bottom 0-disc.
As you can see the Disklock Pro discs have square keyway holes and symmetrical gates in the discs.
Every 15° there is a gate in the disc, equidistant from the disc’s line of symmetry. Two gates are
used because the lock has a two-way rotation and therefore there are two different shearlines,
one in the clockwise rotation and one in the counter clockwise rotation.
You can also see that the Disklock Pro discs do not have grooves, notches, or gates on the underside of
the discs where the return bars are, unlike the Protec discs. This is because of the Disc Blocking System
(DBS). The DBS prevents picking the cylinder, more about that later.
On the right picture you see the Protec disc. The gates on the LEFT side of the line of symmetry are
making nice jumps from 15° from the left in the middle (1-disc) to the top (6-disc). The gates on the right
side of the line of symmetry don’t make these nice jumps.
The Protec 1-disc and 2-disc on the RIGHT side of the line of symmetry make nice jumps from 15°. The
3-, 4-, and 5-discs are the same. The reason for that are the two radii in the key, more about that later.
The Protec 6-disc has only one gate since it does not rotate when used with the correct key.
You see the eight different variation discs which can be used in a Protec cylinder. The bottom 0-disc has
a notch that prevents the key from going further into the keyhole, this disc also controls the profile on the
tip of the key.
Different numbers of discs used
There are Protec systems which contain nine discs or eleven discs. The key on top is an example of a
key with only nine discs. This means the cylinder contains 7 code discs. The key in the middle and the
bottom have the standard 11 discs (9 code discs). The 9-disc cylinders are specially used in camlocks
and they have only one dimple hole at each side of the key. The keys in the middle (Sapphire level) and
on the bottom (Ruby level) can be used in the longer camlocks and the normal Euro profile cylinders.
They have therefore 2 or 3 dimple holes on each side.
One Protec 9-disc key (top) and two 11-disc keys (below)
Protec security levels
In the Protec system there are 4 different key security levels:
– Diamond Level
Additional keys are only available direct from Abloy. Full details of registration must be provided (e.g.
Official order and signatories) and will be checked thoroughly before additional keys are provided.
– Ruby Level
All ABLOY® PROTEC Centres can use an exclusive keyway for locks supplied. Only the Centre that
issued the keys originally, can provide additional keys.
– Emerald Level
Similar to the Ruby level with the original supplier providing additional keys. Keys are marked for
identification and Abloy should be contacted for guidance if the original source is unknown.
– Sapphire Level
The lowest and most common level. This level is normally used only for individual locks and key
cards will be issued. The card can be presented to any ABLOY® PROTEC Centre for additional keys to
be provided. Mostly this profile is NA77FF. You can recognize the profile by the characters
A7F on the side of the key.
Protec keycard with key profile number and key number
Protec Key Profiles
There are two different profile discs in the Protec system: a profile disc where the key enters the lock,
called the Profile plate and the bottom 0-disc (or also named the profiled 0-disc) in the back of the lock
that engages the tip of the key.
An example of a key profile number is NF77CC. The first N stands for the Protec system, I assume. The
following character “F” stands for the profile plate where the key enters the lock. The F stands for the
number of the Profile plate. There are profile plates with A, B, C, etc. The numbers “77” stand (in my
opinion) for the two dimple holes in the key. The characters “CC” on the end of the key number stand for
the number of the bottom 0-disc. Also here are the characters, AA, BB, CC, etc possible.
There are key numbers with the numbers 11 in the middle. I assume the key has then three dimple holes
on each side of the key.
Two hardened profile plates (coded A and H)
The bottom 0-disc is a very important disc for the key profile, as it has a notch that prevents the key from
going further into the keyhole. The tip of a Protec key can have minor cuts to make the key profile. I
have several different Protec keyways, but often the differences are so minor that they are hard to see in
a photograph. This close-up of two different 0-discs has enough variation to be easily visible. The
corresponding grooves are only on the tip of the key.
The left disc in the picture below is an upper 0-disc. This disc is mostly on the eight position in the lock
(counted from the back) and steers the return bars. It has no profile control function.
One upper 0-disc and two different bottom 0-discs for Cam locks
The grooves over the full length of the key are the same for most Protec systems, with minor differences
at the tip of the key. The most common profile is the NA77FF (Sapphire level).
Key Cuts and Key Reading
Each Protec cylinder key has an equally numbered and spaced pattern of cuts which corresponds to the
discs within the matching cylinder. Each spacing on the key can have one of seven cut “depths”, actually
cut angles, numbered 0 through 6.
Theoretically, each key for an eleven disc cylinder could have over
1.97 billion possible combinations. The practical key change possibilities, however, are fewer, because
there are only 9 code discs. The other two discs are necessary for steering the return bars.
There are 10 spaces on the key for cut-angles. Starting from the tip of the key there is an uncut portion
of 2.57 mm (0-cut), followed by number of 2 mm wide cuts, depending on the coding of the key, with a
division of 1.5 mm. Therefore the cuts are partially overlapping.
A 0-cut is always left uncut, that is, blank. Cuts 1–5 are pairs of flat (trapezoidal) pointed triangles
positioned at 15° from each other. These cuts are formed using precise angles and depths. The 6-cut is
all the way around.
The following illustration depicts the various angles and shapes of the key cuts.
Protec key cuts and key reading
Here you can see the cuts in the key. They start numbering with 0 for the profiled 0-disc, that’s no cut in
the key. This is also the tip of the key. This 0-cut is not used in the key number.
In this demo key the first cut is a 6-cut. With this deepest cut, the disc will not rotate during the first 90°.
Then the next nine discs follow. A key number consists of ten numbers.
Explanation of the Two Radii in the Protec key
Protec keys are cut on two different radii, they even made a 2R symbol for this patented feature.
The key cuts 3, 4 and 5 are cut for the inside and the key cuts 1 and 2 are cut for the outside.
Cut Protec key on two radii
The picture below shows the contact points of the key with the inside of the discs. These contact points
vary by cut due to the two radii in the key. You can also see that the key is not symmetrical, and if you
rotate the key counter-clockwise, the key makes contact with the discs at a different angle. This is the
reason why you don’t see two straight shear lines in a Protec cylinder. There is only one shear line for
the locking bar to drop in. You can see this clearly in the cutaway.
This is an example of the two radii in the key. The picture clearly shows the different contact points on
the inside of the disc, with the key.
How the DBS (Disc Blocking System) works
In the Protec the return bars are incorporated into the Disc Blocking System (DBS). On the bottom of the
Protec disc you will see fine notches on the outer circle of the discs (highlighted in red above). After 90°
of rotation, the moving return bar (red) is pushed into these notches as it binds with the stationary return
bar (green), binding the discs and preventing their further rotation. If a disc in the middle for example is
rotated 45°, there is a notch in the locking bar (top, entering notch) which corresponds with that rotation.
After a rotation of 45°, that specific disc will then be blocked. DBS aids in preventing the lock being
The Disklock Pro discs do not have these notches, therefore they do not have a DBS function. You can
check this function with a cut-away by inserting the top of the key in the cylinder and only rotating the
Disc Controller Element. On the picture below you can see the difference between the not blocked discs
in Disklock Pro (left) and the blocked discs in the Protec (right).
Abloy Protec Locks DECODER is for legal use only!