Chain drive

KA 34-BSY+ Set

The chain drive set for precise synchronous operation of two drives on one window element: Our KA 34-BSY+ Set is especially quiet in ventilation mode and opens your window within 60 seconds in case of fire with the help of its high-speed function.
KA 34/600-BSY+ Set KA 34/700-BSY+ Set KA 34/800-BSY+ Set KA 34/1000-BSY+ Set KA-BSY+
Product NamePriceQty
KA 34/600-BSY+ Set
KA 34/700-BSY+ Set
KA 34/800-BSY+ Set
KA 34/1000-BSY+ Set

Performance features

  • Can be used for openings for smoke exhaust; D+H Euro SHEV in accordance with EN 12101‑2; and for daily ventilation
  • With integrated BSY+ motor and synchronised electronics controlled via microprocessor
  • High‑speed function (HS) for especially fast opening windows in case of fire (SHEV)
  • Option of up to 8 drives in one synchronous group
  • Supply and signals at KA 34‑BSY+ for up to 3 drives can be looped in series
  • Special chain stabilisation
  • Relief of pressure on window gasket after closing process
  • Programmable drive functions and different drive parameters
  • Running speed in CLOSED direction decreases to 5 mm/s (passive closing edge protection)
  • Time-controlled reversing when an obstacle is detected in the CLOSED direction (active closing edge protection)

Technical Data

Supply 24 V DC / ±15 % / 1 A
Force of pressure 300 N
Tensile force 300 N
Nominal locking force 2000 N
Service life 20000 double strokes *
Stroke 350 - 1300 mm
OPEN running speed 11.8 mm/s
OPEN running speed - SHEV 12.2 mm/s
CLOSED running speed 11.8 mm/s
Type of protection IP 32
Emission sound pressure level LpA ≤ 70 dB(A)
Temperature range -5 °C ... +75 °C
Fire resistance B300 (30 min / 300 °C)
Housing Aluminium
Surface Powder-coated
Colour White aluminium (~ RAL 9006)
Connection 2.5 m silicone cable
Dimension A 421 - 902 mm
Dimension B 247.5 - 728.5
* For vertical use, please consult with D+H Sales!
Specification per drive


TypeArt. NoStrokeDimension ADimension BWeightRemark
KA 34/600-BSY+ Set26.010.20600 mm546 mm372.5 mm2.20 kg
KA 34/700-BSY+ Set26.010.25700 mm596 mm422.5 mm2.40 kg
KA 34/800-BSY+ Set26.010.30800 mm646 mm472.5 mm2.60 kgObserve pressure load diagram!
KA 34/1000-BSY+ Set26.010.351000 mm750 mm576.5 mm3.00 kgObserve pressure load diagram!
KA-BSY+26.010.00Variable equipment possible

Brackets are not included and have to be ordered separately.

Potential drive options

Approvals / Certificates

These products are also available with the following approvals:

Find out about permission details from your D+H Partner.


KA x4/1000 - Chain drive, 1000mm stroke (1.11MB)
KA x4/1100 - Chain drive, 1100mm stroke (1.14MB)
KA x4/1200 - Chain drive, 1200mm stroke (1.25MB)
KA x4/1300 - Chain drive, 1300mm stroke (1.3MB)
KA x4/250 - Chain drive, 250mm stroke (589.2KB)
KA x4/350 - Chain drive, 350mm stroke (672.27KB)
KA x4/500 - Chain drive, 500mm stroke (778.05KB)
KA x4/600 - Chain drive, 600mm stroke (853.3KB)
KA x4/700 - Chain drive, 700mm stroke (919.46KB)
KA x4/800 - Chain drive, 800mm stroke (940.56KB)

KA 34-BSY+ / KA 54-BSY+ - Chain drive (4.56MB)

KA-PLP, KA-BSY+, KA-K, KA-K-BSY+ Set, KA-TW-BSY+, KA-TW-KSY+ - Chain drive KA (5.33MB)

KA 34/600-BSY+ Set [26.010.20]
KA 34/700-BSY+ Set [26.010.25]
KA 34/800-BSY+ Set [26.010.30]
KA 34/1000-BSY+ Set [26.010.35]
KA-BSY+ [26.010.00]