BLASI – Key operated switch KDT for TA-4

Name: BLASI - Key operated switch KDT for TA-4 - MaceGulf
SKU: BLSP-7910162

BLASI – Key operated switch KDT for TA‑4 is a key‑controlled mode selector designed specifically to work with BLASI control units based on the TA‑4 platform. The BLASI – Key operated switch KDT for TA‑4 typically offers positions such as OFF–Automatic–Continuous–Hand, allowing authorized users to safely stop, start or override the door’s operating mode by turning the key. It is mounted at the standard 1200 mm height on the operator tube or wall, matching the TA‑4 hardware and wiring layout. With a compact, robust cylinder and compatible contact arrangement, BLASI – Key operated switch KDT for TA‑4 is suitable for use in BLASI‑based automatic‑door and barrier systems where secure, TA‑4‑specific manual control is required.

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Product Details

BLASI – Key operated switch KDT for TA‑4 is integrated into BLASI door systems that use the TA‑4 control architecture, providing a dedicated, key‑operated interface for changing the door’s operating state. When the key is turned, the BLASI – Key operated switch KDT for TA‑4 switches between OFF, Automatic, Continuous and Hand, which sends a clear signal to the TA‑4‑based controller so the door can be stopped, run normally, forced into continuous motion or set to manual‑only for service. This close compatibility ensures that the wiring, contact logic and mounting geometry match the original BLASI TA‑4 configuration, so there is no need to re‑engineer the control cabinet or change the mode‑selection logic during replacement or upgrades.

Designed for commercial use, BLASI – Key operated switch KDT for TA‑4 features a durable key cylinder and reliable internal contacts with standard terminals that connect directly into the TA‑4 control chain. Its compact body fits into the same brackets or in‑wall mounting boxes used for other KDT and TA‑4 hardware, giving a neat, low‑profile operating point on the door frame or tube. The switch is mainly intended for indoor or sheltered outdoor locations where dust and light moisture are present. By using BLASI – Key operated switch KDT for TA‑4, facility managers and technicians maintain a secure, code‑compliant operating‑mode control that supports safe manual intervention and consistent performance in TA‑4‑based BLASI automatic‑door and barrier installations.

Article No: 7910162