TN19-0250-55

MikroTik TN19-0250-55 Price in Kenya – 55V 4.5A 250W Open-Frame Replacement PSU

MikroTik TN19-0250-55 Price in Kenya

The MikroTik TN19-0250-55 is a 250W open-frame replacement power supply developed specifically for the MikroTik CRS418 series. MikroTik specifies the unit at 55V DC and 4.5A, giving it the power capacity needed for demanding CRS418 installations, including environments where the switch is supplying connected devices through PoE.

Unlike external desktop power adapters, the TN19-0250-55 is an internal replacement PSU module. It is designed to replace the original power supply inside compatible CRS418 switches rather than being connected directly to another router or network device as an external adapter.

MikroTik currently lists the TN19-0250-55 at a suggested price of US$69. I did not find a sufficiently reliable current Kenya-specific retail price for the exact PSU, so Kenyan buyers should request a current quotation based on local stock and import availability.

MikroTik TN19-0250-55 Specifications

SpecificationDetailsProduct NameMikroTik TN19-0250-55Product CodeTN19-0250-55Product TypeOpen-frame replacement power supplyOutput Voltage55V DCOutput Current4.5ARated Power250WMain ApplicationCRS418 seriesInstallation TypeInternalRouterOS RequiredNoEthernet PortsNoneConfiguration RequiredNoMTBFApprox. 100,000 hours at 25°COfficial Suggested PriceUS$69

MikroTik's official product brochure confirms the 55V DC, 4.5A and 250W output specification, while the main product page lists an MTBF of approximately 100,000 hours at 25°C. (MikroTik CDN)

What Is MikroTik TN19-0250-55?

The TN19-0250-55 is a replacement internal PSU designed to provide the high-power DC rail required by compatible CRS418 switches.

Its role can be simplified as:

AC power entering the CRS418 chassis → internal TN19-0250-55 PSU → 55V DC power → switch electronics and PoE subsystem

The power supply does not perform any switching, routing or PoE negotiation itself. Those functions remain under the control of the CRS418 hardware and RouterOS.

Key Features of MikroTik TN19-0250-55

1. 250W Power Capacity

The TN19-0250-55 is rated at 250W, making it a substantially higher-power module than ordinary MikroTik wall adapters.

MikroTik describes it specifically as an Open Frame 250W replacement PSU for the CRS418 series. (MikroTik)

This capacity is important because CRS418 switches can operate multiple network interfaces while also supplying power to attached PoE devices.

2. 55V DC Output

The PSU provides a 55V DC output. (MikroTik CDN)

This higher-voltage architecture is well suited to PoE-capable switching because higher voltages help deliver useful power over Ethernet cabling while keeping current requirements manageable.

3. 4.5A Output Current

The rated output current is 4.5A. (MikroTik CDN)

Nominally:

55V × 4.5A = 247.5W

which corresponds closely to MikroTik's stated 250W class.

MikroTik TN19-0250-55 CompatibilityDevice / ApplicationCompatibilityCRS418-8P-8G-2S+RMOfficially related productCRS418-8P-8G-2S+5axQ2axQ-RMOfficially related productCRS418 SeriesPrimary intended platformPoE-powered CRS418 installationsSuitable as the internal PSUOther CRS switchesDo not assume compatibilityCCR routersNot intended unless specifically documentedExternal 55V devicesNot intended as a generic external adapterHome MikroTik routersNot suitable

MikroTik officially lists CRS418-8P-8G-2S+RM and CRS418-8P-8G-2S+5axQ2axQ-RM as related products for the TN19-0250-55. (MikroTik)

4. Designed for CRS418-8P-8G-2S+RM

One of the main supported products is the CRS418-8P-8G-2S+RM.

This CRS418 model combines high-density Ethernet switching with PoE capabilities. The 250W PSU provides the internal power needed by the switch while allowing the device to maintain a useful PoE power budget.

Because the TN19-0250-55 is a dedicated replacement module, it is preferable to use the correct part rather than adapting a generic 55V supply.

5. Compatible with the Wireless CRS418 Version

MikroTik also lists the CRS418-8P-8G-2S+5axQ2axQ-RM as a related device. (MikroTik)

That version incorporates additional wireless capability, making reliable internal power delivery especially important when the switch is supporting both networking functions and connected PoE devices.

6. Useful for PoE-Heavy Installations

A 250W PSU is especially valuable where the CRS418 is powering multiple devices such as:

• Wireless access points

• MikroTik radios

• IP cameras

• VoIP phones

• PoE switches

• Network bridges

• Other compatible powered devices

The actual PoE budget is controlled by the CRS418's own hardware specifications and configuration, not merely by the PSU's 250W nameplate.

7. Internal Open-Frame Construction

The TN19-0250-55 has an open-frame PCB design rather than a fully enclosed desktop adapter.

This means it is intended to operate inside the protected CRS418 chassis. It should not be powered or handled as an exposed standalone unit.

8. Replacement Rather Than Upgrade Accessory

The product is described by MikroTik specifically as a replacement PSU. (MikroTik)

Its primary role is therefore to restore a compatible CRS418 switch if the original internal supply fails or requires replacement.

It should not automatically be treated as a method of increasing the PoE capability beyond what the CRS418 hardware itself supports.

9. No Software Configuration Required

The TN19-0250-55 is an electrical module.

It has no:

• RouterOS

• SwOS

• Ethernet interface

• IP address

• SFP interface

• Wireless interface

• CPU

• Firmware

• WinBox configuration

The switch itself controls networking and PoE behaviour.

MikroTik TN19-0250-55 Price in Kenya

The official MikroTik suggested price for the TN19-0250-55 is US$69. (MikroTik)

No reliable current Kenyan retailer listing for the exact model was found in the latest search. Since this is a specialized CRS418 spare part, the actual Kenya price can depend heavily on stock, freight, exchange rates, VAT and supplier availability.

Pricing InformationDetailsOfficial MikroTik Suggested PriceUS$69Current Kenya PriceRequest quotationProduct CodeTN19-0250-55Rated Power250WOutput Voltage55V DCOutput Current4.5AMain ApplicationCRS418 replacement PSUBuying RecommendationConfirm exact CRS418 model before orderingTN19-0250-55 vs Other MikroTik High-Power SuppliesFeatureTN19-0250-55G1251-0250WNAMTP250-53V47-OD48V2A96WRated Power250W250W250W96WOutput Voltage55VModel-specific CRS812 PSU53V48VOutput Current4.5AModel-specificApprox. 4.7A2AInstallationInternal open-frameHot-swap internalOutdoor PSUExternal adapterPrimary PlatformCRS418CRS812 DDQnetPower productsPoE routers/switchesHot-SwapNot advertised as hot-swapYesNoNoOutdoor UseNoNoYesNoOfficial Suggested PriceUS$69US$79US$99US$39

MikroTik's current accessory catalogue positions TN19-0250-55 at US$69, compared with US$79 for the CRS812 G1251-0250WNA and US$99 for the outdoor MTP250-53V47-OD. (MikroTik)

Why Choose MikroTik TN19-0250-55?

The TN19-0250-55 is the appropriate choice when a compatible MikroTik CRS418 requires its dedicated replacement internal power module.

Its main benefits include:

• 250W rated capacity

• 55V DC output

• 4.5A current capacity

• Designed specifically for CRS418

• Compatible with wired and wireless CRS418 variants

• Genuine MikroTik replacement accessory

• Suitable for PoE-intensive switching environments

• Approximately 100,000-hour MTBF

• No software configuration required

Frequently Asked Questions About MikroTik TN19-0250-55

What is MikroTik TN19-0250-55?

It is a 250W open-frame replacement PSU for MikroTik CRS418 series switches. (MikroTik)

What is its product code?

The official product code is TN19-0250-55.

How powerful is TN19-0250-55?

It is rated at 250W. (MikroTik CDN)

What is its output voltage?

The output is 55V DC. (MikroTik CDN)

What is its output current?

The PSU provides 4.5A. (MikroTik CDN)

How do 55V and 4.5A relate to 250W?

Multiplying the nominal values gives:

55V × 4.5A = 247.5W

which corresponds to the nominal 250W PSU class.

What is the official MikroTik price?

The current official suggested price is US$69. (MikroTik)

What is TN19-0250-55 price in Kenya?

A reliable exact Kenyan retail listing was not available during the latest check. Contact a MikroTik supplier for a current quotation.

Is TN19-0250-55 compatible with CRS418-8P-8G-2S+RM?

Yes. MikroTik lists this model as an official related product. (MikroTik)

Does it work with CRS418-8P-8G-2S+5axQ2axQ-RM?

Yes. This model is also officially listed as a related product. (MikroTik)

Is it designed for the entire CRS418 family?

MikroTik describes it as a replacement PSU for the CRS418 series. You should still confirm the specific model before ordering. (MikroTik)

Can it be used with CRS328?

Do not assume so. The TN19-0250-55 is documented specifically for the CRS418 series.

Can it be used with CRS112?

No direct compatibility is documented. CRS112 uses a different power architecture.

Can it be used with CCR routers?

It is not listed as a CCR replacement supply.

Is TN19-0250-55 an external power adapter?

No. It is an internal open-frame PSU.

Does it plug directly into the switch DC jack?

No. It is intended to be installed inside the CRS418 chassis.

Can I use it outside the switch?

That is not its intended use. The open-frame construction is designed to operate inside compatible equipment.

Is it enclosed?

No. It is an open-frame electronic module.

Is it waterproof?

No. It should remain protected inside the host chassis.

Can it be installed outdoors?

Not as an exposed PSU. The TN19-0250-55 itself is an internal component.

Does it provide PoE directly?

No. The PSU provides electrical power to the CRS418. The switch then manages and distributes PoE through its supported Ethernet interfaces.

Can it power access points?

Indirectly, yes. When installed in a compatible CRS418, the switch can use its available power budget to power supported PoE devices.

Can it power IP cameras?

Through the compatible CRS418 PoE ports, yes, provided each camera's PoE standard and power requirements are supported.

Does the PSU negotiate 802.3af/at?

No. PoE negotiation is performed by the CRS418 hardware, not the replacement power supply.

Does it support passive PoE?

Again, the switch determines the supported PoE modes. The PSU only supplies internal electrical power.

Can it increase my CRS418 PoE budget?

It restores the PSU capacity designed for the CRS418. It should not be assumed to increase PoE capability beyond the switch's published hardware limits.

What happens if the original CRS418 PSU fails?

A compatible TN19-0250-55 can be used as the replacement module, provided the failure has been correctly diagnosed.

Is it useful to keep one as a spare?

For businesses or ISPs relying heavily on CRS418 switches, keeping a spare PSU can reduce downtime if an internal power supply fails.

Does it run RouterOS?

No.

Does it run SwOS?

No.

Does it have an IP address?

No.

Can it be configured through WinBox?

No.

Does it need firmware updates?

No.

Does it contain Ethernet ports?

No.

What is its MTBF?

MikroTik specifies approximately 100,000 hours at 25°C. (MikroTik)

Is TN19-0250-55 hot-swappable?

MikroTik describes the TN19-0250-55 as an open-frame replacement PSU, not as a hot-swap module. By comparison, MikroTik explicitly labels products such as the G1251-0250WNA as hot-swap. (MikroTik)

Therefore, do not treat TN19-0250-55 as hot-swappable unless MikroTik provides a specific service procedure stating otherwise.

Should the CRS418 be switched off before replacement?

Yes. Since the TN19-0250-55 is an internal open-frame module and is not advertised as hot-swappable, servicing should be performed with the equipment safely isolated from power.

Can I replace it myself?

Replacement should preferably be carried out by a technician familiar with network equipment and internal power electronics.

Why should a qualified technician install it?

Internal PSU replacement involves exposed electrical components, connectors and chassis hardware. Incorrect installation can damage the PSU, switch or connected equipment and may create an electrical hazard.

Can I replace it with a generic 55V 250W PSU?

That is not recommended simply based on matching voltage and wattage. Mechanical dimensions, connector pinout, regulation, protection circuitry and host compatibility also matter.

Is 48V2A96W a replacement for TN19-0250-55?

No. The two products are fundamentally different.

The 48V2A96W is an external 48V 96W adapter, whereas TN19-0250-55 is an internal 55V 250W CRS418 replacement PSU.

Is MTP250-53V47-OD a replacement?

No. MTP250-53V47-OD is an outdoor 53V 250W power supply intended for MikroTik's netPower line, while TN19-0250-55 is the internal PSU for CRS418 equipment. (MikroTik)

Is this PSU suitable for ISP networks?

Yes. CRS418 switches and high-power PoE distribution can be useful in ISP and enterprise networks, and TN19-0250-55 provides a genuine replacement power option for those installations.

Is it useful in CCTV networks?

Yes, where a CRS418 is being used to distribute network connectivity and compatible PoE power to multiple cameras.

Can it be used in enterprise Wi-Fi networks?

Yes. A CRS418 equipped with the correct PSU can power and connect compatible Wi-Fi access points as part of a centralized network deployment.

Where can I buy MikroTik TN19-0250-55 in Kenya?

The unit can be sourced through specialist MikroTik networking suppliers. Since it is a more specialized replacement component, provide the complete TN19-0250-55 product code when requesting availability and pricing.

Installing MikroTik TN19-0250-55

Before replacing the PSU, verify that the host switch is a compatible CRS418-series model and that the power supply has actually failed. Power problems can sometimes originate from the AC feed, cabling, internal connectors or other switch components rather than the PSU itself.

Because the TN19-0250-55 is an open-frame internal module, disconnect the switch from electrical power before opening the chassis. Proper ESD precautions should also be observed to protect the switch's internal electronics. Do not attempt to power the PSU while it is exposed outside its intended enclosure.

Once installed, the PSU itself requires no configuration. RouterOS on the CRS418 continues controlling switching, routing and PoE functions; TN19-0250-55 simply supplies the necessary internal electrical power.

The MikroTik TN19-0250-55 is a dedicated 250W open-frame replacement power supply for the CRS418 series, delivering 55V DC at 4.5A. Its high power capacity makes it suitable for CRS418 installations where the switch must support substantial networking and PoE workloads.

Its primary compatible devices include the CRS418-8P-8G-2S+RM and CRS418-8P-8G-2S+5axQ2axQ-RM. Because it is an internal open-frame module rather than an external adapter, correct compatibility and professional replacement practices are important.

MikroTik currently lists the TN19-0250-55 at US$69. For the latest TN19-0250-55 price in Kenya, CRS418 replacement power supplies and genuine MikroTik networking equipment, visit Mikrotik Kenya for current pricing and availability.