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    • Fire protection curtains

      Fire protection curtains

      In case of fire, fire protection curtains close wall and ceiling openings. Their construction (roll-down or folding technique) and the use of different fabrics provide for a wide range of applications as well as different protection goals, classifications and time classes. The casing and guide rails of the highly flexible systems blend almost invisibly into the building and allow plenty of scope for sophisticated architecture and open room concepts.

    • Conveyor system closures

      Conveyor system closures

      Various production and logistics processes call for the most diverse types of conveyor systems. If these conveyor lines pass through fire-retardant or fire-resistant walls or ceilings, the openings required for this purpose must be provided with fire protection closures to prevent the spread of fire through the conveyor system or the goods conveyed. In the event of fire, conveyor system closures (CSC for short) must close these openings immediately and automatically. Fire resistance classified according to DIN EN 13501-2 is just as important as the smooth clearance of the closing areas in the event of a fire.

    • Smoke curtains

      Smoke curtains

      A smoke apron is a part of a smoke control system which also includes other components such as natural smoke and heat exhaust ventilators (EN 12101-2) and mechanical smoke and heat exhaust ventilators (EN 12101-3). Smoke aprons restrict the movement of combustion gases within a building in case of fire.

    • Smoke protection curtains

      Smoke protection curtains

      Once closed, smoke protection curtains (SPC) restrict the passage of smoke during the phase of fire formation, so that in the event of a fire, there is enough time to rescue people and animals from the room behind the curtain and to recover material assets without the need for respiratory equipment.

    • Tube sealings

      Tube sealings

      The solution for issues with fire protection dampers in ventilation and air conditioning systems in conveyor processes. Stöbich offers fire protection for pneumatic conveyor lines the closing elements of which are not exposed to the flow of conveyed material. This way, the closing element cannot be damaged or contaminated by abrasive conveyed goods.

    • Control units

      Control units

      Each automatic fire protection system needs a control unit. They are critical to safety, because a failure of this function means that the entire investment into a fire protection sealing has been in vain. Control units coordinate both fire detection and interaction with other control units, such as higher-level building control systems or clearing of the closing area of conveyor system closures.

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Powerpac Typ3

Product description

The Powerpack is an energy storage device for bridging short mains failures or voltage fluctuations in the feed-in voltage of the hold-open system.

The Powerpack is maintenance-free and has a service life of up to 10 years.

ManufacturerProtronic Innovative Steuerungselektronik GmbH, Grimmaische Str. 92, D-04828 Bennewitz
Maximum operating voltage28 V
Max. extractable current1 A, electronic cut-off at 1.4 A
Max. Charging currentincreasing up to approx. 80 mA
Recharge time (discharged pack)approx. 50 minutes
Charging time (partial discharge)approx. 30 minutes
Temperature range-25 °C to +40 °C
Bridging timemax. 10 min (depending on connected load)
Lifetimeup to 10 years
ConnectionConnector 2-pole, by Jointech, type: A2501H-02P, dimensions: 5.6 mm x 5.7 mm x 7.7 mm
Max. Dimensions118 x 27 x 55 mm (LxWxH)
The bridging time of the Powerpack depends on the connected load


Example - Table for common unit combinations

Device configurationLoad current at 24 VBridging time
RZ8 + 1x Holding magnet0,115 Aapprox. 9 minutes 48 seconds
RZ8 + AM-S0,350 Aapprox. 3 minutes 28 seconds
RZ8 + 2x AM-S0,600 Aapprox. 2 minutes 5 seconds
RZ8 + AM-U0,400 Aapprox. 3 minutes 3 seconds
RZ8 + 2 x AM-U0,750 Aapprox. 1 minutes 42 seconds

The Powerpack keeps the output voltage of the power supply constant at 22 VDC over the bridging period. When the stored energy is used up, the PP3 switches off the output voltage to 0 VDC.

CAUTION: A short circuit of the charged Powerpack can damage the electronics. Please check the Powerpack after a short circuit and replace it if necessary. The defective Powerpack can be repaired in many cases. Please send it to Protronic, stating a QS number.

When using the PP3 in a hold-open system type RZ8 with the aBZ Z-6.500-2436 aBG RZ8 RZ24-FA, it is no longer necessary to change the loop resistance from 4k7 to 5k9.

The Powerpack type 3 (PP3) replaces the Powerpack type 2 (PP2). The PP3 is downward compatible and can therefore be used as a replacement for a PP2.