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  •   -23.72€Switch-mode power supply | 85-264VAC/24VDC | 36W | 1.5A | DIN rail | IP20 | Sentera Controls | DHDR8-24-36
      -23.72€Switch-mode power supply | 85-264VAC/24VDC | 36W | 1.5A | DIN rail | IP20 | Sentera Controls | DHDR8-24-36 1

    Switch-mode power supply | 85-264VAC/24VDC | 36W | 1.5A | DIN rail | IP20 | Sentera Controls | DHDR8-24-36

    Code: DHDR8-24-36
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  • Product description

    Switch-mode power supply | 85-264VAC/24VDC | 36W | 1.5A | DIN rail | IP20 | Sentera Controls | DHDR8-24-36

    DHDR8-24-36 – a Sentera Controls DIN rail switching 24 VDC / 36 W power supply with a universal 85–264 VAC input. Intended for powering transmitters, controllers, Modbus devices and pushbuttons in building and industrial automation.

    Key idea:
    A narrow (35 mm) 24 VDC power supply with short-circuit, overvoltage and overload protection – a reliable “heart” of the automation cabinet.
    Output
    24 VDC, 0–1.5 A
    Power
    36 W
    Input
    85–264 VAC, 47–63 Hz
    Installation
    DIN TS-35, width 35 mm, IP20

    Operating principle

    The power supply is mounted on a TS-35/7.5 or TS-35/15 DIN rail and is only 35 mm wide. The mains is connected to terminals L and N, the load to +V and -V (24 VDC); the universal 85–264 VAC, 47–63 Hz input allows the same power supply to be used in different networks.

    Output 24 VDC, current 0–1.5 A, rated power 36 W, natural convection cooling without a fan. In an overload, constant current limiting operates and the supply recovers automatically once the fault is removed; overvoltage protection resets when the power is switched back on, and the LED indicates that power is on.

    Result – a stable 24 VDC power supply for sensors, controllers and Modbus devices with low losses at no load (< 0.3 W). The permissible load decreases at higher ambient temperature (see the derating curves in the datasheet), so leave a power margin in a hot cabinet.

    Benefits DHDR8-24-36?
    Universal input, three types of protection, low no-load consumption (< 0.3 W) and only 35 mm wide – takes little space in the cabinet.

    Technical specifications

    Product type Switch-mode power supply for DIN rail
    Manufacturer / code Sentera Controls / DHDR8-24-36
    Input voltage 85–264 VAC, 47–63 Hz
    Output voltage 24 VDC
    Output current 0–1.5 A
    Rated power 36 W
    Consumption without load < 0.3 W
    Protections Short circuit, overvoltage, overload (constant current limiting, automatic recovery)
    Cooling Natural convection
    Indication LED – power on
    Terminals L, N – input; +V, -V – 24 VDC output
    Installation DIN rail TS-35/7.5 or TS-35/15
    Dimensions 35 × 90 × 58.4 mm (35 mm wide)
    EMC emission class B (EN 55032)
    Protection class IP20
    Operating environment -30…+70 °C, 20–90 % rH non-condensing
    Compliance LVD 2014/35/EU, EMC 2014/30/EU (EN 55032, EN 55035, EN 61000-6-2, EN 61204-3 etc.), WEEE 2012/19/EU, RoHS 2011/65/EU

    Manufacturer documentation

    ✔ Recommended by Elektrotechnikos sprendimai

    Original manufacturer documentation – technical data, wiring diagrams and installation instructions.

    Main functions

    • Universal 85–264 VAC input – suitable for different networks.
    • Protections – against short circuit, overvoltage and overload.
    • Automatic reset – after the overload is removed, the power supply works again without intervention.
    • Convection cooling – without a fan – silent and with no wear.
    • 35 mm wide housing – saves space on the DIN rail.
    • Low consumption with no load – < 0.3 W – consumes almost no energy in standby mode.
    • Operation -30…+70 °C – also suitable for unheated cabinets.
    • LED indication – the power status is visible at a glance.
    • Limited-power source test – the power supply complies with the limited power source test.

    Where is it used?

    • 24 VDC supply for sensors and controllers
    • Ventilation and heating automation cabinets
    • Building automation (BMS)
    • Modbus devices without Power over Modbus
    • Production automation
    • Button and indication circuits
    • Unheated technical cabinets (-30…+70 °C)

    On-demand operation

    For the control panel manufacturer.
    A 35 mm wide housing and class B EMC emission – compact and tidy panel.
    For industrial electricians.
    The universal 85–264 VAC input and operation at -30…+70 °C also suit unheated production cabinets.
    For the transmitter installer.
    1.5 A at 24 VDC – for several pressure or CO₂ transmitters with a reserve.

    Practical application

    If a 24 VDC controller and four transmitters with a total current of about 1 A have to be powered in a ventilation cabinet, then the DHDR8-24-36 (36 W, 1.5 A) powers them with a reserve and takes up only 35 mm of the DIN rail.

    Application guide: how it is used in practice

    The DHDR8-24-36 powers 24 VDC automation – only the list of connected devices changes:

    Site What is connected Result Installer's note
    Ventilation automation cabinet 24 VDC controller, sensors → +V / -V One power supply for all low-voltage automation Add up the currents – up to 1.5 A
    Pressure / CO₂ transmitters Multiple 24 VDC transmitters Stable power supply for analog signals Allow for derating in a hot cabinet
    Modbus network without PoM 24 VDC Modbus devices Power via a separate wire When PoM and a repeater are needed – DPOM8-24-20
    Buttons and indication 24 VDC pushbuttons, indicator lamps Safe low voltage for control circuits IP20 – install in a cabinet

    How to choose a power supply

    Connected devices / power Recommended model
    24 VDC devices, up to 36 W DHDR8-24-36 (24 VDC, 36 W, 1.5 A) ← this model
    Modbus devices with PoM, 24 VDC up to 20 W + repeater DPOM8-24-20 (24 VDC, 20 W, PoM)
    24 VAC devices, up to 25 / 40 / 63 VA SATD1-24-25 / -40 / -63 (24 VAC)
    12 VAC devices, up to 25 / 40 / 63 VA SATD1-12-25 / -40 / -63 (12 VAC)
    Rule: the sum of the currents of all 24 VDC devices must not exceed 1.5 A (36 W); in a hot cabinet leave a margin for derating.
    When to choose another solution: For Modbus devices with Power over Modbus and a line repeater – DPOM8-24-20; for 12 / 24 VAC alternating voltage – SATD1 series transformers.

    Pros

    • Universal 85–264 VAC input
    • Short-circuit, overvoltage and overload protection
    • Convection cooling
    • Only 35 mm wide
    • Operation -30…+70 °C
    • Low consumption with no load

    Cons / limitations

    • Power limited to 36 W (1.5 A)
    • IP20 – in a cabinet only
    • No Power over Modbus or Modbus repeater – the DPOM8-24-20 is intended for that
    • Power decreases at high temperature

    Safety and installation notes

    • Installation and connection are to be carried out by a qualified electrician with the mains supply disconnected.
    • Hazardous mains voltage is present on terminals L and N.
    • IP20 – install only in an enclosed, dry cabinet without condensation.
    • Leave room for convection cooling around the source.

    Quick selection guide

    24 VDC
    36 W
    1.5 A
    DIN rail
    IP20
    Suitable when you need:
    • to power 24 VDC sensors and controllers;
    • to install the power supply in an automation cabinet on a DIN rail;
    • to use a universal 85–264 VAC mains.
    Check before use:
    • the sum of the currents of all loads (up to 1.5 A);
    • the temperature in the cabinet;
    • whether Power over Modbus is needed – then DPOM8-24-20.
    Important reminder: The DHDR8-24-36 is only a power supply; it does not boost the Modbus signal or pass it through RJ45.

    FAQ

    What is the maximum current?
    The maximum current is 1.5 A at 24 VDC (36 W).
    Is a fan needed?
    No, cooling is by natural convection.
    What happens in case of overload?
    Constant current limiting is active, and after the fault is removed the power supply recovers automatically.
    What is the input voltage range?
    The input voltage can be 85–264 VAC, 47–63 Hz.
    Is it suitable for Modbus sensors with RJ45?
    It is suitable for powering, but for Power over Modbus and the repeater use DPOM8-24-20.
    At what temperature does it operate?
    The power supply operates at -30…+70 °C, but at higher temperatures the permissible load decreases.

    Switch-mode power supply | 85-264VAC/24VDC | 36W | 1.5A | DIN rail | IP20 | Sentera Controls | DHDR8-24-36

    Sentera DHDR8-24-36 – a 24 VDC / 36 W switch-mode power supply for DIN rail with a universal 85–264 VAC input, protections and a 35 mm wide housing for control cabinets.

    Illustrative image may have been created using AI. The appearance of the product may differ slightly from the image shown. Please refer to the technical specification.

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