2278856

DIN RAIL HOUSING, UPPER, POLYAMIDE, GRN

⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.

Manufacturer: PHOENIX CONTACT
Product type: Controller Accessories
SVHC: No SVHC (04-Feb-2026)
Product Range: ME
Current Rating: -

Delivery and price
Units per pack	10
Price	1.4 €
Current stock	10+
Lead time	30 days

Datasheet

https://www.phoenixcontact.com/gb/products/2278856 

## Upper part of housing - ME 12,5 OTU-MKDSO GN - 2278856 

Please be informed that the data shown in this PDF Document is generated from our Online Catalog. Please find the complete data in the user's documentation. Our General Terms of Use for Downloads are valid (http://phoenixcontact.com/download) 

DIN rail housing, Upper housing part for PCB terminal blocks with screw connection, width: 12.6 mm, height: 99 mm, Depth: 45.85 mm, color: green (6021) 

## Your advantages 

- Item is from the ME product range 

- Tool-free mounting 

Available in overall widths from 12.5 mm to 90 mm, modular extension is possible 

- Inflammability class V0 according to UL 94 

- Variety of connection technologies 

- Can be mounted on the DIN rail 

Optional bus connector that is either integrated or mounted on the DIN rail 

## Key Commercial Data 

Packing unit 10 pc Minimum order quantity 10 pc GTIN ~~|IN~~ GTIN ~~rs~~ 4046356328999 Weight per Piece (excluding packing) 9.030 g ~~I~~ Custom tariff number 85472000 ~~nn~~ Country of origin ~~ns~~ Germany Note ~~Rn~~ Made to Order (non-returnable) 

## Technical data 

## Item properties 

|Brief article description|Upper part of housing|
|---|---|
|Type|ME 12,5 OTU-MKDSO GN|
|Order No.|2278856|
|Housing type|DIN rail housing|



01/03/2020   Page 1 / 9 

https://www.phoenixcontact.com/gb/products/2278856 

## Upper part of housing - ME 12,5 OTU-MKDSO GN - 2278856 

## Technical data 

Item properties Type Upper housing part for PCB terminal blocks with screw connection Max. IP code to attain IP20 Mounting type Latching with lower housing part Connection levels 2 (Both sides) Max. number of positions 12 (pitch: 3.5 mm) 8 (pitch: 5 mm) ~~SS~~ Dimensions Width [ w ] 12.6 mm Height [ h ] 99 mm Depth [ d ] 45.85 mm Depth from base support surface [d] 38.5 mm ~~=~~ Material data Color (RAL) green (6021) Flammability rating according to UL 94 V0 Housing material Polyamide ~~——————~~ Ambient conditions Ambient temperature (storage/transport) -40 °C ... 55 °C Ambient temperature (assembly) -5 °C ... 100 °C Ambient temperature (operation) -40 °C ... 105 °C (depending on power dissipation) Relative humidity (storage/transport) 80 % ~~=~~ PCB data Number of PCB holders 1 PCB thickness 1.4 mm ... 1.8 mm Mounting position Vertical (horizontal DIN rail) Type of PCB mount Latching ~~SS~~ Power dissipation, single housing at 20 °C Ambient temperature 20 °C Mechanical strength/tumbling barrel Specification IEC 60998-1:2002-12 Height of fall 50 cm Number of drop cycles 10 ~~—————————~~ Vibration test Specification IEC 60068-2-6:2007-12 Frequency 10 - 150 - 10 Hz Sweep speed 1 octave/min Amplitude 0.15 mm (10 - 58.1 Hz) Acceleration 2g (58.1 - 150 Hz) Test duration per axis 2.5 h ~~=>~~ 01/03/2020   Page 2 / 9 

https://www.phoenixcontact.com/gb/products/2278856 

## Upper part of housing - ME 12,5 OTU-MKDSO GN - 2278856 

## Technical data 

## Vibration test 

|Vibration test||
|---|---|
|Test directions|X-, Y- and Z-axis|
|Shock||
|Specification|IEC 60068-2-27:2008-02|
|Pulse shape|Half-sine|
|Acceleration|15g|
|Shock duration|11 ms|
|Number of shocks per direction|3|
|Test directions|X-, Y- and Z-axis (pos. and neg.)|
|Thermostability (Ball Thrust Test)||
|Specification<br>IEC 60695-10-2:2014-02<br>Temperature<br>125 °C<br>Test duration<br>1 h<br>Force<br>20 N<br>~~SSS~~||
|Test for assessing the risk of fire (glow wire)||
|Specification<br>DIN EN 60695-2-11 (VDE 0471-2-11):2014-11<br>Temperature<br>850 °C<br>Time of exposure<br>30 s<br>~~———~~||
|Degrees of protection provided by housings (IP code)||
|Specification<br>IEC 60529:1989-11 + AMD 1:1999-11 + AMD 2:2013-08<br>Result, degree of protection, IP code<br>IP20<br>~~ee~~||
|General information||
|Type of note<br>Assembly instruction:<br>Note<br>Refer to the data sheet for the range in the download area.<br>~~es~~||
|Packaging information||
|Type of packaging<br>packed in cardboard<br>Pieces per package<br>10<br>Denomination packing units<br>Pcs.<br>Outer packaging type<br>Carton<br>~~SSS——]+——~~||
|Standards and regulations||
|Flammability rating according to UL 94|V0|



Environmental Product Compliance 

|China RoHS<br>~~ee~~|Environmentally friendly use period: unlimited = EFUP-e<br>~~ee~~|
|---|---|
|~~ee~~|No hazardous substances above threshold values<br>~~ee~~|



Drawings 

01/03/2020   Page 3 / 9 

https://www.phoenixcontact.com/gb/products/2278856 

## Upper part of housing - ME 12,5 OTU-MKDSO GN - 2278856 

Dimensional drawing 

## Classifications 

## eCl@ss 

|eCl@ss 4.0|eCl@ss 4.0|27141100|
|---|---|---|
|eCl@ss 4.1|eCl@ss 4.1|27141100|
|eCl@ss 5.0|eCl@ss 5.0|27141100|
|eCl@ss 5.1|eCl@ss 5.1|27141100|
|eCl@ss 6.0|eCl@ss 6.0|27180800|
|eCl@ss 7.0|eCl@ss 7.0|27182702|
|eCl@ss 8.0|eCl@ss 8.0|27182702|
|eCl@ss 9.0|eCl@ss 9.0|27182702|



01/03/2020   Page 4 / 9 

https://www.phoenixcontact.com/gb/products/2278856 

## Upper part of housing - ME 12,5 OTU-MKDSO GN - 2278856 

## Classifications 

ETIM ETIM 3.0 EC001121 ETIM 4.0 EC001031 ETIM 5.0 EC001031 ETIM 6.0 EC001031 ETIM 7.0 EC001031 ~~SSS~~ UNSPSC UNSPSC 6.01 31261501 UNSPSC 7.0901 31261501 UNSPSC 11 31261501 UNSPSC 12.01 31261501 UNSPSC 13.2 31261501 UNSPSC 18.0 31261501 UNSPSC 19.0 31261501 UNSPSC 20.0 31261501 UNSPSC 21.0 31261501 ~~——~~ Approvals Approvals 

## Approvals 

UL Recognized 

Ex Approvals 

Approval details 

> UL Recognized  http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/index.htm FILE E 240868 ~~—~~ Accessories 

Accessories 

Fiber optic 

01/03/2020   Page 5 / 9 

https://www.phoenixcontact.com/gb/products/2278856 

## Upper part of housing - ME 12,5 OTU-MKDSO GN - 2278856 

## Accessories 

Fiber optic - HS LC-H-D3/ R1XC1 - 2202313 

Light guides, passive, rigid, can be used for the ME, ME-MAX, ME-IO, ME PLC, and EH housing ranges (housing must be processed) 

Fiber optic - HS LC-H-5X2/ R1XC1 - 2202314 

Light guides, passive, rigid, can be used for the ME, ME-MAX, ME-IO, ME PLC, and EH housing ranges (housing must be processed) 

Fiber optic - HS LC-H-D3/ R2XC1-5,08 - 2202315 

Light guides, passive, rigid, can be used for the ME, ME-MAX, ME-IO, ME PLC, and EH housing ranges (housing must be processed) 

Fiber optic - HS LC-H-D2/ R2XC1-2,54 - 2202316 

Light guides, passive, rigid, can be used for the ME, ME-MAX, ME-IO, ME PLC, and EH housing ranges (housing must be processed) 

Fiber optic - HS LC-H-D2/ R2XC2-2,54 - 2202317 

Light guides, passive, rigid, can be used for the ME, ME-MAX, ME-IO, ME PLC, and EH housing ranges (housing must be processed) 

01/03/2020   Page 6 / 9 

https://www.phoenixcontact.com/gb/products/2278856 

## Upper part of housing - ME 12,5 OTU-MKDSO GN - 2278856 

## Accessories 

Fiber optic - HS LC-H-D2/ R2XC5-2,54 - 2202318 

Light guides, passive, rigid, can be used for the ME, ME-MAX, ME-IO, ME PLC, and EH housing ranges (housing must be processed) 

## Fiber optic - HS LC-H-D2/ R2XC10-2,54 - 2202319 

Light guides, passive, rigid, can be used for the ME, ME-MAX, ME-IO, ME PLC, and EH housing ranges (housing must be processed) 

Fiber optic - HS LC-H-D2C/ R2XC1-2,54 - 1036658 

Light guides, passive, rigid, can be used for the ME, ME-MAX, ME-IO, ME PLC, and EH housing ranges (housing must be processed) 

## Fiber optic - HS LC-H-D2C/ R2XC2-2,54 - 1043044 

Light guides, passive, rigid, can be used for the ME, ME-MAX, ME-IO, ME PLC, and EH housing ranges (housing must be processed) 

## Fiber optic - HS LC-H-D2C/ R2XC5-2,54 - 1071310 

Light guides, passive, rigid, can be used for the ME, ME-MAX, ME-IO, ME PLC, and EH housing ranges (housing must be processed) 

01/03/2020   Page 7 / 9 

https://www.phoenixcontact.com/gb/products/2278856 

## Upper part of housing - ME 12,5 OTU-MKDSO GN - 2278856 

## Accessories 

Fiber optic - HS LC-H-D2C/ R2XC10-2,54 - 1071314 

Light guides, passive, rigid, can be used for the ME, ME-MAX, ME-IO, ME PLC, and EH housing ranges (housing must be processed) 

## Filler plug 

Filler plugs - ME B-12,5 MKDSO GN - 2906872 

DIN rail housing, Filler plug for unoccupied terminal points, color: green (6021) 

## Necessary add-on products 

## PCB terminal block - MKDSO 2,5/ 2-L - 1707205 

PCB terminal block, nominal current: 24 A, rated voltage (III/2): 400 V, Nominal cross section: 2.5 mm², pitch: 5 mm, number of positions: 2, connection method: Screw connection with tension sleeve, mounting: Wave soldering, conductor/PCB connection direction: 0 °, color: green, Pin layout: Linear pinning, Solder pin [P]: 3.5 mm. Article with lateral pin exit 

PCB terminal block - MKDSO 2,5/ 2-R - 1707195 

PCB terminal block, nominal current: 24 A, rated voltage (III/2): 400 V, Nominal cross section: 2.5 mm², pitch: 5 mm, number of positions: 2, connection method: Screw connection with tension sleeve, mounting: Wave soldering, conductor/PCB connection direction: 0 °, color: green, Pin layout: Linear pinning, Solder pin [P]: 3.5 mm. Article with lateral pin exit 

Mounting base housing - ME 12,5 UT/FE GN - 2906791 

DIN rail housing, Lower housing part with metal foot catch, tall design, with vents, width: 12.6 mm, height: 99 mm, Depth: 107.3 mm, cross connection: without bus connector, number of positions cross connector: not relevant, color: green (6021) 

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https://www.phoenixcontact.com/gb/products/2278856 

## Upper part of housing - ME 12,5 OTU-MKDSO GN - 2278856 

## Accessories 

Mounting base housing - ME 12,5 UT GN - 2906759 

DIN rail housing, Lower housing part with metal foot catch, tall design, with vents, width: 12.6 mm, height: 99 mm, Depth: 107.3 mm, cross connection: without bus connector, number of positions cross connector: not relevant, color: green (6021) 

Mounting base housing - ME 12,5 UTG GN - 2906762 

DIN rail housing, Lower housing part with metal foot catch, tall design, without vents, width: 12.6 mm, height: 99 mm, Depth: 107.3 mm, cross connection: without bus connector, number of positions cross connector: not relevant, color: green (6021) 

Mounting base housing - ME 12,5 UTG/FE GN - 2906801 

DIN rail housing, Lower housing part with metal foot catch, tall design, without vents, width: 12.6 mm, height: 99 mm, Depth: 107.3 mm, cross connection: without bus connector, number of positions cross connector: not relevant, color: green (6021) 

Phoenix Contact 2020 © - all rights reserved http://www.phoenixcontact.com 

01/03/2020   Page 9 / 9

Updated at April 11, 2026

Phoenix Contact is a global leader in industrial connection technology, automation systems, and electronic interface solutions. With decades of engineering heritage originating in Germany, the company develops robust components designed to ensure reliable power, data, and signal transmission across demanding manufacturing and industrial environments. The cornerstone of the Phoenix Contact portfolio is its industry-leading selection of connection technologies. The range features an exceptional variety of terminal blocks, including pluggable headers and sockets, highly reliable wire-to-board solutions, and versatile DIN rail terminal blocks. These foundational connectivity components are supported by a comprehensive ecosystem of power distribution blocks, interface modules, marking systems, and accessories engineered for seamless control cabinet wiring. Beyond physical connectivity, Phoenix Contact provides critical components for advanced automation, control, and system protection. The wider offering encompasses a broad spectrum of process controllers, high-efficiency AC/DC converters, and a comprehensive suite of power, safety, and solid-state relays. From precision signal converters and electronic circuit breakers to fiber optic cable assemblies, Phoenix Contact equips engineers with the high-performance technologies required to build secure, highly efficient, and future-ready industrial systems.

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