Electric strike STEP 48 Preload

– Electric strike with fixed cut-out for mechanical deadbolt

STEP 48 Preload has a fixed cut-out that can operate in conjunction with a lock case’s hook bolt or deadbolt, to block the door’s access control system/reader or door automation. The electric strike can, in this way, block the door’s access control system/keypad or door automation. If you use a thumb turn or key to block the door, this feature is especially desirable.

Reliability and easy installation with minimal dimensions

The combination of STEP’s patented Preload technology and small dimensions provides a lock with high operational reliability and easy installation in almost all door environments.

STEP’s patented Preload technology

A common problem is that a door is subjected to pressure, for example, because the door is a little skew or that gravel or snow has gathered at the doorstep. STEP 48 Preload is equipped with STEP’s patented Preload technology that allows the door to be unlocked even if subjected to pressures of up to 40 kg.

Seals and pressure differences– The Preload function enables the door to always be unlocked even when the door lock is tensioned against the electric strike.
Door automation– The Preload function combined with rapid unlocking means that the door opens quickly and without risk of becoming stuck.
Evacuation door– The Preload function ensures that a fire alarm can release the lock, despite pressure against the door by crowds, seals, pressure differences or warped doors.

Optional accessory: a dead bolt indication

To STEP 48 Preload, it is possible to install a dead bolt indication to the electric strike. This indication can be used to automatically block the door’s access control system/reader or door automation when the hook bolt/deadbolt is mechanically locked.

Swedish premium quality

All our products are developed and manufactured by us, in Sweden. Maximum functionality and reliability are fundamental product features we never compromise on. By choosing STEP, you are selecting premium-quality products designed to deliver exceptional reliability for the long term.

Designed for demanding environments

Some environments place particularly high demands on durability and performance. These include door systems exposed to extreme weather changes, heavy wear and tear, or challenging conditions such as salt, moisture, or high preload pressure. Thanks to their functionality and reliability, our products are built to withstand even the toughest environments. Choose STEP – When it has to work.

A wide range of faceplates to choose from

To STEP 48 Preload there is a broad selection of stainless steel faceplates to choose from. All are designed by us and manufactured in stainless steel.

Our smart Faceplate guide brings all the options together in one place. There you can enter the product category and use the filters to see which faceplate is most suitable for your door environment.

STEP 48 Preload has the same faceplate assortment as STEP 40 Preload, STEP 90 Preload, STEP 98 Preload.

Find the right faceplate for this product

Functional description

STEP 48 Preload is reversible to fit right- and left hung doors.

ST480 Fail secure function. The rotating cam is electrically activated via accesscontrol system, code lock or similar, and becomes unlocked.

ST4800 Fail secure function and bolt contact. The rotating cam is electrically activated via access control system, code lock or similar, and becomes unlocked. The access control system detects, due to the bolt contact whether the door is closed or open.

ST481 Fail safe function. The rotating cam is electrically activated via access control system, code lock or similar, and becomes locked.

ST4801 Fail safe function and bolt contact. The rotating cam is electrically activated via access control system, code lock or similar, and becomes locked. The access control system detects, due to the bolt contact whether the door is closed or open.

ST485 Adjustable function. The rotating cam is electrically activated via access control system, code lock or similar, and becomes locked or unlocked, depending on the setting of the strike plate.

ST4805 Adjustable function and bolt contact. The rotating cam is electrically activated via access control system, code lock or similar, and becomes locked or unlocked, depending on the setting of the strike plate. The access control system detects, due to the bolt contact whether the door is closed or open.

Certificates

Durability: Grade X due to SS-EN 14846.
Corrosion: Grade M due to SS-EN 14846.
Security: Grade 3 due to SS-EN 14846.
Security electrical manipulation: Grade 1 due to SS-EN 14846.

Technical data

Micro switch single pole alternating, max. 30 V DC, 1A.
Built-in protector diode.
Breaking strength 11 kN (≈1 100 kg).
Guaranteed to open even with preload in fail secure and fail safe function.
Anti-hammer secure.

Article number	E-nr	Description
ST480		Electric strike STEP 48 Preload. Fail secure function 24 V DC.
ST480-12		Electric strike STEP 48 Preload. Fail secure function 12 V DC.
ST4800		Electric strike STEP 48 Preload. Fail secure function 24 V DC, including bolt contact.
ST4800-12		Electric strike STEP 48 Preload. Fail secure function 12 V DC, including bolt contact.
ST481		Electric strike STEP 48 Preload. Fail safe function 24 V DC.
ST481-12		Electric strike STEP 48 Preload. Fail safe function 12 V DC.
ST4801		Electric strike STEP 48 Preload. Fail safe function 24 V DC, including bolt contact.
ST4801-12		Electric strike STEP 48 Preload. Fail safe function 12 V DC, including bolt contact.
ST485		Electric strike STEP 48 Preload. Adjustable function 24 V DC.
ST485-12		Electric strike STEP 48 Preload. Adjustable function 12 V DC.
ST4805		Electric strike STEP 48 Preload. Adjustable function 24 V DC, including bolt contact.
ST4805-12		Electric strike STEP 48 Preload. Adjustable function 12 V DC, including bolt contact.