BLASI – Push button 1xNO & 1xNC
BLASI – Push button 1×NO & 1×NC is a standard‑size momentary push‑button switch used in BLASI‑type automatic‑door and barrier control panels, with one normally open (NO) and one normally closed (NC) contact pair. The button is typically 22 mm in diameter and mounted flush or semi‑flush in the operator tube, wall or panel, serving as an activation, hold‑open or emergency‑control device. When pressed, the 1×NO contact closes to send a “start” or “call” signal to the BLASI control unit, while the 1×NC contact can simultaneously open another circuit (for example a safety or interlock line). BLASI lists this as a generic “Push button 1×NO & 1×NC,” so technicians usually source a standard industrial 1NO‑1NC button that matches the BLASI‑panel mounting‑hole pattern and control‑circuit voltage.
Product Details
BLASI – Push button 1×NO & 1×NC forms part of the activation interface on BLASI‑series swing, sliding or revolving‑door systems, allowing users or staff to manually trigger a control signal. The metal or plastic head fits a standard 22 mm panel cut‑out, with a spring‑return mechanism so the button returns to the idle position when released; behind the panel are screw‑clamp or spade‑type terminals for the two contact pairs. The 1×NO contact is used, for example, to energize a coil, register a “door‑open” command, or start a safety sequence, while the 1×NC contact can be used to break a holding circuit or interlock so that the BLASI logic responds only when the button is pressed. This dual‑contact layout lets a single push button act both as a start and a safety‑condition device, simplifying the wiring diagram and control‑logic design.
Typical 1NO‑1NC push‑buttons of this family are rated for auxiliary‑control‑circuit levels (around several amps at 230–250 V AC or 24 V DC) and are designed for indoor or lightly sheltered environments where they are exposed mainly to dust and regular use. They often feature robust contact materials and a mechanical life in the hundreds of thousands of operations, which is suitable for high‑traffic entrances. By using BLASI – Push button 1×NO & 1×NC, facility managers and technicians create a reliable, standardized way to manually initiate or interlock BLASI‑based door functions, helping to keep the panel layout clean and the control behavior predictable and easy to troubleshoot.
Article No: 7900116
Additional information
| Brand | BLASI |
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