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Power control unit


  • Distributes supply voltage to the power rail
  • Optional connection of backup supply
  • Approved for installation in I.S. / Ex zone 2 / Div. 2
  • Optional redundant supply for the power rail
  • Must be installed on power rail, PR type 9400
  1. Overview +

  2. Technical details +

  3. Accessories +

Application and advanced features

  • The power control unit detects errors from any of the devices mounted on the power rail and transmits a collective alarm to the control system via the internal status relay.
  • Optional connection of two power supplies - a primary supply and a backup supply.
  • Redundant supply for the power rail can be obtained by mounting two 9410 devices connected to 2 separate power supplies (e.g. PR 9420).

Technical characteristics

  • The status relay will be energised when the following three conditions are met:
    1. Supply voltage is present on pins 31 and 32.
    2. Backup supply voltage is present on pins 34 and 33. (If the backup supply is not in use, a jumper must be placed between pins 32 and 33 - the jumper is delivered with the device).
    3. There are no error messages from the devices connected to the power rail.
  • When a collective alarm is activated via the power rail, the status relay in the 9410 will be de-energized (pins 11, 12 and 13).
  • Two green front LEDs indicate connection of supply and backup.
  • A red LED indicates error status.

Data sheet

Brazilian manual

Russian manual

UL certificate

FM certificate

INMETRO certificate

DNV marine certificate

EAC declaration

Metrology Pattern Approval (MPA)

Environmental Conditions

  • Operating temperature

    -20°C to +60°C

  • Storage temperature

    -20°C to +85°C

  • Relative humidity

    < 95% RH (non-cond.)

  • Protection degree


Mechanical specifications

  • Dimensions (HxWxD)

    109 x 23.5 x 104 mm

  • Weight approx.

    140 g

  • Wire size

    0.13...2.08 mm2 AWG 26...14 stranded wire

  • Screw terminal torque

    0.5 Nm

  • Vibration

    IEC 60068-2-6

  • 2...13.2 Hz

    ±1 mm

  • 13.2...100 Hz

    ±0.7 g

Common specifications

  • Supply

  • Max. required power

    96 W

  • Internal power dissipation

    2 W (max.)

  • Efficiency

    > 97.9%

Input specifications

  • Supply voltage

    21.6...26.4 VDC (double / reinforced isolation)

  • Backup supply

    21.6...26.4 VDC

Output specifications

  • Status relay

  • Max. voltage

    250 / 30 VDC

  • Max. current

    2 AAC / 2 ADC

  • Max. AC power

    500 VA / 60 W

  • Output voltage

    Input voltage-0.5 VDC (@ 4 A)

  • Output power

    96 W (max.)

  • Output current

    4 A (max.)

  • Output ripple

    Same as input ripple

Observed authority requirements

  • EMC


  • LVD


  • EAC

    TR-CU 020/2011


  • ATEX 2014/34/EU

    KEMA 07ATEX0152 X

  • IECEx

    KEM 08.0025X

  • FM



    NCC 12.1308 X

  • UL

    UL 61010-1

  • DNV-GL Marine

    Stand. f. Certific. No. 2.4

  • ClassNK


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