Installation Instructions

1. When installing or replacing DRA Series, it must be ensured that no currents, which can cause electric arcs, are flowing.

2. When working with DRA Series, the system involved must be in a de-energized condition.

3. Install the DIN mounting rail (35mm, To EN 50022)

4. Snap lock the SPD to the rail.

5. Connect wiring to the indicated terminals.

6. Ensure compliance with supplied instruction.

7. Apply power and observe correct operation of status indicators.

Wiring Connection Instructions

1. Before making connections to the unit, verify that the unit model number and nameplate voltage rating are appropriate for connection to the intended power source.

2. For best performance, unit should be positioned so that the length of the wiring to the surge protective device (SPD) unit is minimized. To reduce the wiring impedance to surge currents, the phase, neutral (if required), and ground conductors are recommended to be twisted together and routed in the same race way (conduit). Avoid any sharp bends in the conductors. All wiring must comply with the National Electrical Code (NEC) and applicable local codes.

3. Each SPD terminal is designed to accept wire sizes from 4 mm² to 35 mm² (solid) or 25 mm² (stranded conductor). Insulation should be stripped back 12 mm before terminating into tunnel terminal.

4. Do not use excessive force when tightening the terminal. (7 Nm is recommended.)