Electric strike STEP 30 Preload

Electric strike with small dimensions that fit into already existing recesses

STEP 30 Preload is a minimal electric strike designed to replace existing simple electric strikes and create a reliable door environment even with older doors and recesses.

Bring new life to older doors

STEP 30 Preload can be used as a replacement for existing simple electric strikes. In this way, STEP 30 Preload provides the opportunity to achieve a reliable and well-functioning door environment despite older doors and recesses.

In common with the other products in the series, STEP 30 Preload features smooth action for good door operation.

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 30 Preload is equipped with STEP’s patented Preload technology that allows the door to unlock, 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.
A wide range of faceplates

STEP 30 Preload has a wide range of stainless steel faceplates to choose from, that make every door work optimally.

Find the right faceplate for this product
Technical data STEP 30 Preload
  • Durability: Grade X per EN 14846.
  • Corrosion: Grade M per EN 14846.
  • Security: Grade 3 per EN 14846.
  • Microswitch unipolar changeover, max. 30 V DC, 1A.
  • Built-in protective diode.
  • Detection indication that the door is closed/open (applies to the products with bolt contact).
  • Break resistance 5 kN (≈ 500 kg).
  • Ensures opening despite preload up to 0,4 kN (≈ 40 kg) in fail secure and fail safe function.
  • Anti-hammer secured.
  • Reversible to fit right- and left hung doors.
Article number E-nr Description
ST30 Electric strike STEP 30 Preload. Fail secure function 24 V DC.
ST30-12 Electric strike STEP 30 Preload. Fail secure function 12 V DC.
ST300 Electric strike STEP 30 Preload. Fail secure function 24 V DC, inklusive kolvkontakt.
ST300-12 Electric strike STEP 30 Preload. Fail secure function 12 V DC, inklusive kolvkontakt.
ST31 Electric strike STEP 30 Preload. Fail safe function 24 V DC.
ST31-12 Electric strike STEP 30 Preload. Fail safe function 12 V DC.
ST301 Electric strike STEP 30 Preload. Fail safe function 24 V DC, including bolt contact.
ST301-12 Electric strike STEP 30 Preload. Fail safe function 12 V DC, including bolt contact.
ST35 Electric strike STEP 30 Preload. Adjustable function 24 V DC.
ST35-12 Electric strike STEP 30 Preload. Adjustable function 12 V DC.
ST305 Electric strike STEP 30 Preload. Adjustable function 24 V DC including bolt contact.
ST305-12 Electric strike STEP 30 Preload. Adjustable function 12 V DC including bolt contact.
Power consumption STEP 30 Preload with fail secure and fail safe functions
  • 24 V DC + 15 % – 10 %. 110 mAh / max 300 mA.
  • 12 V DC + 15 % – 10 %. 220 mAh / max 600 mA.

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

Wiring diagram STEP 30 Preload without and with bolt contact

Dimensional drawing STEP 30 Preload

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