VLD Locking Drive


A range of locking drives for operating multi-point lock fittings.

Features and benefits:

  • Can be used for openings for smoke exhaust; D+H Euro SHEV in accordance with EN 12101-2 and for daily ventilation.
  • Optionally with BSY+ motor electronics controlled via programmable microprocessor for communication and sequence control in conjunction with D+H BSY+ window opening drives. Up to six VLD BSY+ drives on one window possible.
  • Connection of D+H window drives with BRV communication.
  • Window drives with a total current up to 2.5 A can be connected.
  • Manual emergency unlocking possible.
  • Configurable locking direction on the drive.

General information

Uniclass 2015

Pr_75_50_02_46 Linear actuatorsPrimary


L10/10 Wood windows

L10/15 Wood windows

L10/20 Steel windows

L10/210 Wood windows

L10/25 Aluminium windows

L10/250 Wood windows

L10/260 Wood windows

L10/30 PVC-U windows

L10/31 PVC-U windows

L10/310 Steel windows

L10/315 Steel windows

L10/33 Proprietary windows

L10/330 Aluminium windows

L10/335 Aluminium windows

L10/350 PVC-U windows

L10/360 PVC-U windows

L10/380 PVC-U windows

L10/390 Proprietary windows

L10/400 Composite windows

L10/410 Composite windows

L10/45 Rooflights

L10/460 Rooflights

L10/480 Roof windows

L10/490 Roof ventilators

L10/50 Roof windows

Specification data - Linear actuators

Product Reference

VLD Locking Drive


VLD 51/038

VLD 51/038-BSY+


Bespoke, variable equipment possible.


Bespoke, variable equipment possible.





Standard product features

Technical characteristics:

  • Supply: 24 V d.c. (1 A).
  • Duty cycle: 30 %.
  • Locking force: 500 N.
  • Breakaway force: 1000 N.
  • Stroke: 38 mm.
  • Service life: > 10 000 double strokes.
  • Open running speed: 4.2 mm/s.
  • Closed running speed: 4.2 mm/s.
  • Ingress protection rating: IP 50.
  • Housing: V2A stainless steel.
  • Connection: 2.5 m cable.
  • Size (w x h x d): 493 x 25 x 25 mm.
  • Standards: EN 12101-2 CE certified.

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