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. This is desirable in door environments where you want to be able to block the door’s access control system/reader or door automation with, for example, a thumbturn or key.

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.

Wide range of faceplates in stainless steel

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

 

 

Find the right faceplate for this product
Technical data STEP 48 Preload
  • 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.
  • Micro switch single pole alternating, max. 30 V DC, 1A.
  • Built-in protector diode.
  • Built-in indication for detecting that the door is closed/open (bolt contact).
  • Breaking strength 900 kN (900 kg).
  • Guaranteed to open even with preload in fail secure and fail safe function.
  • Anti-hammer secure.
  • Adjustable to fit right and left doors.
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.
Power consumption STEP 48 Preload with fail secure and fail safe functions
  • 24 V DC + 15 % – 10 %. 110 mAh / max 300 mA.
  • 12 V DC + 15 % – 10 %. 20 mAh / max 600 mA.

Power consumption 0 mA for rotating cam at rest (fail secure = locked, fail safe = unlocked)

Wiring diagram STEP 48 Preload with and without bolt contact

Dimensional drawing STEP 48 Preload

Accessories

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