BLASI – Miniature power Relays Series 56
BLASI – Miniature power relays Series 56, 24 VDC, 4×CO, 12 A are compact plug‑in relays used in BLASI automatic‑door control panels to switch auxiliary loads under the control of 24 V DC logic signals. They feature four changeover (4‑pole double‑throw, 4PDT) contacts rated for up to 12 A at 230–250 V AC, making them suitable for controlling contactors, hold‑open magnets, alarm circuits or interlocks. The relay plugs into Series‑96‑type screw‑terminal sockets on the BLASI DIN rail, so the panel wiring stays fixed while the module can be swapped during service. BLASI lists this as a standard “Miniature power relay, 24 V DC, 4×CO, 12 A” within the Series 56 family, treating it as a BLASI‑compatible workhorse relay for higher‑current control circuits in swing, sliding and revolving doors.
Product Details
BLASI – Miniature power relays Series 56, 24 VDC, 4×CO, 12 A sit on the BLASI control‑board DIN rail as an interface between low‑power electronics (PLC, safety board, timer or control switch) and higher‑current devices driving the door. When the BLASI panel supplies 24 V DC to the relay coil, all four changeover contacts switch simultaneously, either energizing a contactor coil, a door‑hold‑open magnet, or an external interlock or alarm line, while the panel itself only handles the 24 V control current. The 4‑contact layout allows multiple circuits to be controlled with one coil, which simplifies BLASI wiring diagrams and keeps the panel neat. Typical versions of this 56‑series plug‑in relay use silver‑nickel contacts, have a 12 A switching rating at 230–250 V AC, and are designed for plug‑in‑socket mounting on Series‑96 bases, which matches the BLASI‑panel approach.
These Miniature power Relays commonly measure about 40 mm wide and 37–40 mm deep, with a lockable test button and a mechanical flag that visually indicates whether the relay is energized, which helps technicians verify operation without opening the panel. Technical data for 56‑series relays shows long mechanical life (up to about 50 million operations) and suitable operating‑temperature ranges (−40 °C to +70 °C) for indoor BLASI‑cabinet use. By using BLASI – Miniature power relays Series 56, 24 VDC, 4×CO, 12 A, service staff achieve a robust, modular way to drive higher‑current devices from the BLASI control board, improving system safety, maintainability and circuit flexibility in BLASI‑based automatic‑door installations.
Article No: 7900301
Additional information
| Brand | BLASI |
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