JAB Modul za upravljanje pogonima podnog grijanja JB-128N

JB-128N is an underfloor heating control module for integration into the JABLOTRON JA‑100+ system. It independently switches up to 12 thermoelectric actuator heads (230 V AC) and offers additional outputs for an auxiliary circulator and a heat source. Communication with the control panel is via the JA‑100 bus.

The module is intended for quick mounting directly to a heating manifold with cable ties; it can alternatively be mounted on a DIN rail or on a wall. The unit includes LED status indicators, a learn button and a manual mode switch that forces all outputs on for commissioning or drying.

Protection features include freeze protection (weekly activation of inactive outputs), defined behaviour on bus communication loss (temporary activation according to configuration) and over-temperature protection that turns outputs off after a set interval. Outputs are powered through a safety thermostat connected to the NC THERM terminals — this contact must be correctly wired or permanently bridged with an insulated conductor (≥1.5 mm²) if no thermostat is used.

Key technical data

• Outputs: 12 actuator outputs (O1–O12)
• Module supply: 230 V AC, 50 Hz
• Bus connection: JA‑100 bus, 12 V DC (range 8–15 V)
• Actuator heads: 230 V AC, max. input 2 W; max. current up to 300 mA (after 200 ms)
• Module consumption: max. 2.3 W (idle 0.8 W); maximum supply current 1.8 A
• Recommended circuit protection: 4 A, type B
• Dimensions: 245 × 90 × 50 mm; protection class: IP20; operating temperature: 5 °C to +45 °C

Peripherals are enrolled in the F-Link software or via the module's learn button; PG outputs from the control panel can be mapped to the module's physical O outputs. Installation, bus connection and mains wiring must be carried out by a trained, certified installer in accordance with Jablotron documentation.

Use case: neat integration of JA‑100+ systems with hydronic underfloor heating for zone control, freeze protection and coordinated pump/boiler management.