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  • New item   -49.16€Switch-mode power supply | 24VDC | 40W | 1.67A | 85-264VAC | RJ45 Power over Modbus | IP65 | surface-mounted | Sentera Controls | SEPS8-24-40
    New item   -49.16€Switch-mode power supply | 24VDC | 40W | 1.67A | 85-264VAC | RJ45 Power over Modbus | IP65 | surface-mounted | Sentera Controls | SEPS8-24-40 1
    New item   -49.16€Switch-mode power supply | 24VDC | 40W | 1.67A | 85-264VAC | RJ45 Power over Modbus | IP65 | surface-mounted | Sentera Controls | SEPS8-24-40 2
    New item   -49.16€Switch-mode power supply | 24VDC | 40W | 1.67A | 85-264VAC | RJ45 Power over Modbus | IP65 | surface-mounted | Sentera Controls | SEPS8-24-40 3
    New item   -49.16€Switch-mode power supply | 24VDC | 40W | 1.67A | 85-264VAC | RJ45 Power over Modbus | IP65 | surface-mounted | Sentera Controls | SEPS8-24-40 4
    New item   -49.16€Switch-mode power supply | 24VDC | 40W | 1.67A | 85-264VAC | RJ45 Power over Modbus | IP65 | surface-mounted | Sentera Controls | SEPS8-24-40 5

    Switch-mode power supply | 24VDC | 40W | 1.67A | 85-264VAC | RJ45 Power over Modbus | IP65 | surface-mounted | Sentera Controls | SEPS8-24-40

    Code: SEPS8-24-40
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  • Product description

    Switch-mode power supply | 24VDC | 40W | 1.67A | 85-264VAC | RJ45 Power over Modbus | IP65 | surface-mounted | Sentera Controls | SEPS8-24-40

    The SEPS8-24-40 is a Sentera Controls switch-mode power supply that converts the 85–264 VAC mains voltage to a stable 24 VDC, up to 40 W (Imax 1.67 A). The IP65 housing is wall-mounted, and the output is terminals or a Power over Modbus RJ45 socket for connection.

    Key idea:
    Sentera sensors, controllers and control panels must be powered at 24 VDC. This power supply is designed for exactly that: through the RJ45 socket a single cable can carry power, making installation faster and neater.
    Output
    24 VDC, 40 W (1.67 A)
    Input
    85–264 VAC, 50–60 Hz
    Connections
    Terminals + RJ45
    Protection
    IP65, surface-mounted

    Operating principle

    The power supply is mounted on a wall or other vertical surface. Mains voltage 85–264 VAC, 50–60 Hz is connected to terminals L and N. The output is a terminal block (+24 V, GND) and a Power over Modbus RJ45 socket (24 VDC and GND). The terminals and RJ45 are connected in parallel – the total load is the sum of the loads of both connections and must not exceed 40 W. A green LED indicates that output voltage is present.

    The switching converter produces a stable 24 VDC voltage. Compared with linear sources, such a supply is more efficient, runs cooler, and is lighter and more compact. Overvoltage and overload protection operates in "hiccup" mode: during an overload the supply briefly switches off and tries to restart, and once the fault is removed, operation resumes automatically.

    Result – Sentera sensors, controllers and control panels receive a stable 24 VDC voltage from a single supply, and after an overload operation recovers without human intervention. Engineer's note: when calculating the load, add up the maximum power of all connected devices and leave a margin.

    Benefits SEPS8-24-40?
    A single 24 VDC / 40 W power supply for a group of several Sentera sensors or controllers, with an RJ45 Power over Modbus connector and automatic overload protection.

    Technical specifications

    Product type Switch-mode power supply 24 VDC
    Manufacturer / code Sentera Controls / SEPS8-24-40
    Input voltage 85–264 VAC, 50–60 Hz
    Output voltage 24 VDC
    Max. output current 1.67 A
    Power 40 W
    Outputs Terminals (+24 V, GND) and RJ45 socket Power over Modbus (24 VDC, GND)
    Protection Against overvoltage and overload (hiccup mode, automatic reset)
    Indication Green LED – output voltage is present
    Housing ABS, UL94-V0, grey (RAL 7035)
    Protection class IP65
    Installation Surface-mounted, on the wall (4 mounting holes)
    Operating environment -30…+40 °C, 20–90 % rH non-condensing
    Weight 0.36 kg (net)
    Compliance LVD 2014/35/EU, EMC 2014/30/EU, RoHS, WEEE 2012/19/EU

    Manufacturer documentation

    ✔ Recommended by Elektrotechnikos sprendimai

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

    Main functions

    • 24 VDC / 40 W – powers several Sentera sensors, controllers or control panels.
    • Wide input range 85–264 VAC – suitable for an unstable network and various countries.
    • RJ45 Power over Modbus – power over a single cable.
    • Hiccup protection – in case of overload or short circuit it switches off and recovers automatically.
    • LED indication – you can see at a glance whether there is voltage at the output.

    Where is it used?

    • Damp rooms, warehouses, vegetable stores
    • Technical rooms without a control panel
    • Powering Sentera sensors and controllers next to the devices
    • Power over Modbus connection with an RJ45 cable
    • 24 VDC power supply for type F pressure controllers (HPSPF, DPSPF, HPSAF, DPSAF, SPS2F)
    • Powering a group of pressure or CO₂ sensors with up to 40 W total power

    On-demand operation

    For farm building ventilation installers.
    The IP65 wall-mounted housing allows a 24 VDC supply to be installed in a humid room or warehouse without a separate panel.
    For storage microclimate integrators.
    Transmitters and controllers are powered next to the equipment via terminals or an RJ45 socket, with the total load not exceeding 40 W.
    For service technicians.
    Hiccup protection resets automatically after an overload, and the green LED immediately shows whether 24 VDC is present at the output.

    Practical application

    If several HPS-2 pressure transmitters and an F type pressure controller have to be powered on a warehouse wall, then the SEPS8-24-40 in an IP65 housing provides 24 VDC from the 85–264 VAC mains, and the total power of the connected devices must remain within 40 W (1.67 A).

    Application guide: how it is used in practice

    The SEPS8-24-40 is used in different systems – only the connected devices and the connection method change:

    Site What is connected Result Installer's note
    Damp room, warehouse Wall mounting, L / N from the mains 24 VDC next to the sensors without a separate control panel Route the RJ45 cable through the gland – this maintains IP65
    Group of pressure or CO₂ transmitters Transmitters (e.g. HPS-2, DPS-2) → terminals +24 V / GND All sensors are powered from a single power supply Add up the transmitter power – up to 40 W
    Modbus network with RJ45 Sentera device with RJ45 → RJ45 socket Power over a single cable Terminals and RJ45 are connected in parallel – the load is shared
    Pressure controller with an EC fan HPSPF / DPSPF controller → +24 V, GND The controller receives a stable 24 VDC Connect F-type controllers with 4 wires

    How to choose a power supply

    Installation location Recommended model
    Panel, DIN rail (IP30) DRPS8-24-40 (24 VDC, 40 W, DIN)
    On a wall, damp environment (IP65) SEPS8-24-40 (24 VDC, 40 W, IP65) ← this model
    Rule: the sum of the maximum power of all connected devices must not exceed 40 W (1.67 A at 24 VDC); terminal and RJ45 output loads are added together. Choose the installation location according to the environment: in a panel – DIN version, in a damp room – IP65 version.
    When to choose another solution: for mounting in a panel on a DIN rail – DRPS8-24-40.

    Pros

    • 24 VDC, 40 W
    • Wide input range 85–264 VAC
    • RJ45 Power over Modbus
    • Hiccup protection with automatic reset
    • IP65 enclosure

    Cons / limitations

    • Power limited to 40 W – larger loads require several sources
    • Output voltage is unregulated (24 VDC)
    • Larger than the DIN version, surface mounting only
    • Operating temperature up to +40 °C

    Safety and installation notes

    • Installation and connection are to be carried out by a qualified electrician with the mains voltage disconnected.
    • The 85–264 VAC mains voltage is connected only to the L and N terminals.
    • The total load of the terminal and RJ45 outputs must not exceed 40 W.
    • Operating environment -30…+40 °C, 20–90 % rH non-condensing.
    • To maintain IP65, route the RJ45 cable through the gland; do not use a pre-crimped cable that bypasses the gland.

    Quick selection guide

    24 VDC
    40 W
    85–264 VAC
    RJ45
    IP65
    Suitable when you need:
    • to power Sentera sensors, controllers and panels at 24 VDC;
    • to distribute power over Power over Modbus RJ45 cables;
    • to mount the power supply on a wall in a damp room.
    Check before use:
    • the total power of all devices (up to 40 W);
    • the installation location and the required protection class;
    • whether devices are connected via terminals or an RJ45 cable.
    Important reminder: SEPS8-24-40 – a 24 VDC source; it is not suitable for devices that require AC power (24 VAC).

    FAQ

    How many transmitters can be connected?
    As many as keeps their total maximum power within 40 W.
    What is the RJ45 socket for?
    Power over Modbus – for carrying 24 VDC power over a single cable.
    What happens during an overload?
    The power supply works in hiccup mode and recovers automatically after the fault is cleared.
    Can it be installed in a damp room?
    Yes, the housing is IP65 if the RJ45 cable is routed through a cable gland.
    Is it suitable for 24 VAC powered devices?
    No, the output is 24 VDC only, so the power supply is not suitable for devices requiring 24 VAC.
    Under what conditions does the power supply operate?
    Operating environment -30…+40 °C, 20–90 % rH non-condensing.

    Switch-mode power supply | 24VDC | 40W | 1.67A | 85-264VAC | RJ45 Power over Modbus | IP65 | surface-mounted | Sentera Controls | SEPS8-24-40

    Sentera SEPS8-24-40 – 24 VDC / 40 W switch-mode power supply with 85–264 VAC input, RJ45 Power over Modbus connector, IP65 housing and hiccup protection – for powering Sentera sensors and controllers.

    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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