DeltaV Smart Switches overview

Power specifications for the DeltaV RM1040 Smart Switches

Table: Power specifications for DeltaV RM1040 Smart Switches
Item Specification
Input voltage 100 - 240 VAC
Alarm contacts Normally closed. Changes to Open if:
  • Power supply fails
  • Internal voltage supply fails
  • Self-test failure occurs
Input current 0.5 - 0.3 A
Figure: Alarm relays on the RM1040 Smart Switches


Figure: Three-pin terminal block for power connection


Callout Description
Connection for protective conductor
Connection for supply voltage -/N
Connection for supply voltage +/L
Fastening screw for protective conductor
Fastening screw for supply voltage -/N
Fastening screw for supply voltage +/L

Complete the following steps to connect power to the RM1040 Smart Switch.

  1. Remove the terminal block from the RM1040 Smart Switch.
  2. Connect the protective conductor to the protective conductor terminal.
  3. Connect the positive terminal of the supply voltage to +/L.
  4. Connect the negative terminal of the supply voltage to -/N.
  5. If the neutral conductor or the minus terminal of the supply voltage is not grounded, install a suitable fuse in the input line.