JAB Modul za upravljanje pogonima podnog grijanja JB-128N

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

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

Protection features include freeze protection (weekly activation of inactive outputs), behaviour on bus communication loss (automatic temporary activation), and over-temperature protection that switches outputs off after a set interval. The outputs are powered through a safety thermostat connected to the NC THERM terminals — this contact must be properly wired or permanently linked 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

Peripheral pairing is performed in the F-Link software or via the module's learn button; PG outputs from the control panel are mapped to the module outputs. Installation, bus connection and mains wiring must be performed by a trained, certified installer according to the Jablotron documentation.

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