12 DO

New Revision 3.0

We’ve improved the two most common causes of complaints:

• The new TBU-RS085-300-WH protection chip provides robust protection for the bus against overvoltage and short circuits.
• Replaced the DC/DC converter with a more robust model.

Features

• 12x potential-free relay outputs, 16 A
  • Relay lifetime: 100,000 cycles at maximum load, 2,000,000 cycles at average load
  • Maximum total load: 50 A
• Output configurations:
  • Standalone switched output
  • AC blinds motor with internal interlock of both outputs
  • PWM output
• Standby power consumption: 1 W
• Power consumption per closed relay: 0.4 W
• Power dissipation per 1 A of load: 0.16 W
• Maximum power dissipation at full 70 A load with all relays closed: 1 + 0.4×12 + 0.16×70 = 17 W
• Power supply: 24 VDC ±10%
• Protection: IP20, operating temperature: −20 °C to 40 °C
• DIN rail, 6 modules. Width 107 mm, height 59 mm
• Wire cross-section: 0.2–2.5 mm² (AWG 24–14)
• Terminal screw torque: 0.5–0.7 Nm
• Strip length: 6.5–7.5 mm

Wiring information

Each relay is potential-free. Wire outputs as follows:

1. Connect the phase (Lx) from the distribution board to the first screw terminal of the first output.
2. Prepare short jumper wires ("bridges") and connect them from that same terminal to the common screw terminal of the next output. Continue for all outputs sharing the same phase.
3. Connect the second screw terminal of each relay output to the respective load (light, socket, motor, etc.).
4. Connect the neutral (N) of each load directly to the neutral busbar, not through the module.

Notes: - Multiple phases may be used on different groups of outputs if required. - The module supports standalone switching, AC blinds (with interlock), and PWM mode.