1777989

Pluggable Terminal Block, 5.08 mm, 2 Ways, 24 AWG, 12 AWG, 2.5 mm², Screw

⚠️ 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: Pluggable Terminal Blocks
Pitch Spacing:5.08mm; No. of Positions:2Ways; Wire Size (AWG):24AWG to 12AWG; Conductor Area CSA:2.5mm²; Wire Connection Method:Screw; Rated Current:12A; Rated Voltage:320V; Produc
SVHC: No SVHC (04-Feb-2026)
Pitch Spacing: 5.08mm
Product Range: MSTB
Rated Current: 12A
Rated Voltage: 320V
Wire Size (AWG): 24AWG to 12AWG
No. of Positions: 2Ways
Wire Size AWG Max: 12AWG
Wire Size AWG Min: 24AWG
Conductor Area CSA: 2.5mm²
Wire Connection Method: Screw

Delivery and price
Units per pack	500
Price	1.09 €
Current stock	1000+
Lead time	30 days

Datasheet

https://www.phoenixcontact.com/gb/products/1777989 

## Printed-circuit board connector - MSTB 2,5/ 2-STF-5,08 - 1777989 

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) 

Plug component, Nominal current: 12 A, Rated voltage (III/2): 320 V, Number of positions: 2, Pitch: 5.08 mm, Connection method: Screw connection with tension sleeve, Color: green, Contact surface: Tin 

The figure shows a 10-position version of the product 

## Why buy this product 

Well-known connection principle allows worldwide use 

Low temperature rise, thanks to maximum contact force Screwable flange for superior mechanical stability Allows connection of two conductors 

## Key Commercial Data 

|Packing unit|100 STK|100 STK|100 STK|100 STK|100 STK|100 STK|100 STK||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
||||||||||||||||
|GTIN|||||||||||||||
||||||||||||||||
|GTIN|4017918039851||||||||||||||
|Weight per Piece (excluding packing)|4.240 g||||4.240 g||||||||||
|Custom tariff number|85366990||||||||||||||
|Country of origin|Germany||||||||||||||



## Technical data 

## Dimensions 

|Length|10 mm|
|---|---|
|Height|15 mm|
|Width|20.17 mm|
|Pitch|5.08 mm|
|Dimension a|5.08 mm|
|General||
|Range of articles|MSTB 2,5/..-STF|
|Type of contact|Female connector|



## General 

01/12/2017   Page 1 / 10 

https://www.phoenixcontact.com/gb/products/1777989 

## Printed-circuit board connector - MSTB 2,5/ 2-STF-5,08 - 1777989 

## Technical data 

## General 

|Number of positions|2|
|---|---|
|Connection method|Screw connection with tension sleeve|
|Insulating material group|I|
|Rated surge voltage (III/3)|4 kV|
|Rated surge voltage (III/2)|4 kV|
|Rated surge voltage (II/2)|4 kV|
|Rated voltage (III/3)|250 V|
|Rated voltage (III/2)|320 V|
|Rated voltage (II/2)|630 V|
|Connection in acc. with standard|EN-VDE|
|Nominal current IN|12 A|
|Nominal cross section|2.5 mm²|
|Maximum load current|12 A (with a 2.5 mm² conductor cross section)|
|Insulating material|PA|
|Flammability rating according to UL 94|V0|
|Internal cylindrical gage|A3|
|Stripping length|7 mm|
|Screw thread|M3|
|Tightening torque, min|0.5 Nm|
|Tightening torque max|0.6 Nm|
|Connection data||
|Conductor cross section solid min.|0.2 mm²|
|Conductor cross section solid max.|2.5 mm²|
|Conductor cross section flexible min.|0.2 mm²|
|Conductor cross section flexible max.|2.5 mm²|
|Conductor cross section flexible, with ferrule without plastic sleeve min.|0.25 mm²|
|Conductor cross section flexible, with ferrule without plastic sleeve max.|2.5 mm²|
|Conductor cross section flexible, with ferrule with plastic sleeve min.|0.25 mm²|
|Conductor cross section flexible, with ferrule with plastic sleeve max.|2.5 mm²|
|Conductor cross section AWG min.|24|
|Conductor cross section AWG max.|12|
|2 conductors with same cross section, solid min.|0.2 mm²|
|2 conductors with same cross section, solid max.|1 mm²|
|2 conductors with same cross section, stranded min.|0.2 mm²|
|2 conductors with same cross section, stranded max.|1.5 mm²|
|2 conductors with same cross section, stranded, ferrules without plastic<br>sleeve, min.|0.25 mm²|
|2 conductors with same cross section, stranded, ferrules without plastic<br>sleeve, max.|1 mm²|
|2 conductors with same cross section, stranded, TWIN ferrules with<br>plastic sleeve, min.|0.5 mm²|



01/12/2017   Page 2 / 10 

https://www.phoenixcontact.com/gb/products/1777989 

## Printed-circuit board connector - MSTB 2,5/ 2-STF-5,08 - 1777989 

## Technical data 

## Connection data 

|2 conductors with same cross section, stranded, TWIN ferrules with<br>plastic sleeve, max.|1.5 mm²|
|---|---|
|Minimum AWG according to UL/CUL|30|
|Maximum AWG according to UL/CUL|12|
|Standards and Regulations||
|Connection in acc. with standard|EN-VDE|
||CSA|
|Flammability rating according to UL 94|V0|



## Standards and Regulations 

## Environmental Product Compliance 

|China RoHS|Environmentally Friendly Use Period = 50|
|---|---|
||For details about hazardous substances go to tab “Downloads”,<br>Category “Manufacturer's declaration”|



## Drawings 

**==> picture [437 x 112] intentionally omitted <==**

**----- Start of picture text -----**<br>
Diagram Diagram<br>12 24<br>10 ee 20 ~{ ~<br>8 ee ee, 16 ~ |<br>6 12<br>=SaSSe= ae ACA BSS eH<br>4 = 2-pos. 8<br>2 g° = 5-pos.= 12-pos.= 20-pos. ——PSN a 4 po = 2-pos.= 5= 12-pos.-pos. -| | Ss<br>0 ° a 0 bd Pt tt |TN<br>0 20 40 60 80 100 0 10 20 30 40 50 60 70 80 90 100 110<br>Ambient temperature [°C] Ambient temperature [°C]<br>Current strength [A] Current strength [A]<br>**----- End of picture text -----**<br>


Type: MSTB 2,5/...-STF-5,08 with MSTBV 2,5/...-GF-5,08 

Type: MSTB 2,5/...-STF-5,08 with CC 2,5/...-GF-5,08 P26THR 

## Dimensional drawing 

**==> picture [151 x 77] intentionally omitted <==**

**----- Start of picture text -----**<br>
18,2 4,7 a+5,69<br>4 e mer<br>8,3 5,08 5,08<br>a<br>15<br>**----- End of picture text -----**<br>


## Classifications 

## eCl@ss 

|eCl@ss 4.0|eCl@ss 4.0|272607xx|
|---|---|---|
|eCl@ss 4.1|eCl@ss 4.1|27260701|
|eCl@ss 5.0|eCl@ss 5.0|27260701|



01/12/2017   Page 3 / 10 

https://www.phoenixcontact.com/gb/products/1777989 

## Printed-circuit board connector - MSTB 2,5/ 2-STF-5,08 - 1777989 

## Classifications 

|eCl@ss<br>eCl@ss 5.1<br>27260701<br>eCl@ss 6.0<br>27260704<br>eCl@ss 7.0<br>27440402<br>eCl@ss 8.0<br>27440309<br>eCl@ss 9.0<br>27440309<br>~~ae~~|
|---|
|ETIM<br>ETIM 3.0<br>EC001121<br>ETIM 4.0<br>EC002638<br>ETIM 5.0<br>EC002638<br>ETIM 6.0<br>EC002638<br>~~SSS~~|
|UNSPSC<br>UNSPSC 6.01<br>30211810<br>UNSPSC 7.0901<br>39121409<br>UNSPSC 11<br>39121409<br>UNSPSC 12.01<br>39121409<br>UNSPSC 13.2<br>39121409<br>~~a~~|
|Approvals|
|Approvals|



## Approvals 

CSA / VDE Gutachten mit Fertigungsüberwachung / RS / IECEE CB Scheme / cULus Recognized / EAC / DNV GL 

## Ex Approvals 

Approval details 

http://www.csagroup.org/services/testingCSA 13631 and-certification/certified-product-listing/  B D mm²/AWG/kcmil 28-12 28-12 Nominal current IN 15 A 10 A Nominal voltage UN 300 V 300 V ~~po~~ 

01/12/2017   Page 4 / 10 

https://www.phoenixcontact.com/gb/products/1777989 

## Printed-circuit board connector - MSTB 2,5/ 2-STF-5,08 - 1777989 

## Approvals 

VDE Gutachten mit http://www.vde.com/en/Institute/OnlineService/ 40004701 Fertigungsüberwachung VDE-approved-products/Pages/Online-Search.aspx  mm²/AWG/kcmil 0.2-2.5 Nominal current IN 12 A Nominal voltage UN 250 V RS http://www.rs-head.spb.ru/en/index.php 10.04059.250  IECEE CB Scheme http://www.iecee.org/ DE1-56062-B1B2  mm²/AWG/kcmil 0.2-2.5 Nominal current IN 12 A Nominal voltage UN 250 V cULus Recognized  http://database.ul.com/cgi-bin/XYV/template/LISEXT/1FRAME/index.htm E60425-19931011 B D mm²/AWG/kcmil 30-12 30-12 Nominal current IN 15 A 15 A Nominal voltage UN 300 V 150 V EAC B.01742  ~~a~~ DNV GL https://www.dnvgl.com/ TAE00001EY Accessories ~~[—]~~ 

Accessories 

Bridge 

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https://www.phoenixcontact.com/gb/products/1777989 

## Printed-circuit board connector - MSTB 2,5/ 2-STF-5,08 - 1777989 

## Accessories 

Insertion bridge - EBP 2- 5 - 1733169 

Insertion bridge, fully insulated, for connectors with 5.0 or 5.08 mm pitch, no. of positions: 2 

## Coding element 

Coding profile - CP-MSTB - 1734634 Coding profile, is inserted into the slot on the plug or inverted header, red insulating material ~~TO~~ Labeled terminal marker Marker card - SK 5,08/3,8:FORTL.ZAHLEN - 0804293 

Marker card, Card, white, labeled, Horizontal: Consecutive numbers 1 - 10, 11 - 20, etc. up to 91 - (99)100, Mounting type: Adhesive, for terminal block width: 5.08 mm, Lettering field: 5.08 x 3.8 mm 

## Marker pen 

Marker pen - B-STIFT - 1051993 

Marker pen, for manual labeling of unprinted Zack strips, smear-proof and waterproof, line thickness 0.5 mm 

## 

Marker pen without ink cartridge, for manual labeling of markers, labeling extremely wipe-proof, line thickness 0.35 mm 

## Screwdriver tools 

01/12/2017   Page 6 / 10 

https://www.phoenixcontact.com/gb/products/1777989 

## Printed-circuit board connector - MSTB 2,5/ 2-STF-5,08 - 1777989 

## Accessories 

Screwdriver - SZS 0,6X3,5 - 1205053 

Actuation tool, for ST terminal blocks, insulated, also suitable for use as a bladed screwdriver, size: 0.6 x 3.5 x 100 mm, 2-component grip, with non-slip grip 

## Terminal marking 

Marker card - SK U/3,8 WH:UNBEDRUCKT - 0803906 

Marker card, Sheet, white, unlabeled, can be labeled with: Plotter, Office printing systems, Mounting type: Adhesive, Lettering field: 186 x 3.8 mm 

## Additional products 

Base strip - MDSTB 2,5/ 2-GFR-5,08 - 1736768 

Header, Nominal current: 10 A, Rated voltage (III/2): 320 V, Number of positions: 2, Pitch: 5.08 mm, Color: green, Contact surface: Tin, Mounting: Wave soldering, Can be aligned! Mounting flange: Order no. 1736771, 1736768. In combination with MVSTB or FKCV plugs, both an MVSTBW (or FKCVW) and an MVSTBR plug (or FKCVR) must be used. Combination with TMSTBP plugs is not possible! 

Housing - MDSTB 2,5/ 2-GFL-5,08 - 1736771 

Header, Nominal current: 10 A, Rated voltage (III/2): 320 V, Number of positions: 2, Pitch: 5.08 mm, Color: green, Contact surface: Tin, Mounting: Wave soldering, Can be aligned! Mounting flange: Order no. 1736771, 1736768. In combination with MVSTB or FKCV plugs, both an MVSTBW (or FKCVW) and an MVSTBR plug (or FKCVR) must be used. Combination with TMSTBP plugs is not possible! 

Base strip - MSTB 2,5/ 2-GF-5,08 - 1776508 

Header, Nominal current: 12 A, Rated voltage (III/2): 320 V, Number of positions: 2, Pitch: 5.08 mm, Color: green, Contact surface: Tin, Mounting: Wave soldering, Gold-plated contact surface / color: Green RAL 6021 

01/12/2017   Page 7 / 10 

https://www.phoenixcontact.com/gb/products/1777989 

## Printed-circuit board connector - MSTB 2,5/ 2-STF-5,08 - 1777989 

## Accessories 

Base strip - MSTBV 2,5/ 2-GF-5,08 - 1777073 

Header, Nominal current: 12 A, Rated voltage (III/2): 320 V, Number of positions: 2, Pitch: 5.08 mm, Color: green, Contact surface: Tin, Mounting: Wave soldering ~~eS~~ Base strip - MDSTBV 2,5/ 2-GFL-5,08 - 1836477 Header, Nominal current: 10 A, Rated voltage (III/2): 320 V, Number of positions: 2, Pitch: 5.08 mm, Color: green, Contact surface: Tin, Mounting: Wave soldering, The article can be aligned to create different nos. of positions! In combination with MVSTB or FKCV plug components, both an MVSTBW (or FKCVW) and an MVSTBR plug (or FKCVR) must be used. Combination with TMSTBP plug components is not possible! 

Base strip - MDSTBV 2,5/ 2-GFR-5,08 - 1836480 

Header, Nominal current: 10 A, Rated voltage (III/2): 320 V, Number of positions: 2, Pitch: 5.08 mm, Color: green, Contact surface: Tin, Mounting: Wave soldering, The article can be aligned to create different nos. of positions! In combination with MVSTB or FKCV plug components, both an MVSTBW (or FKCVW) and an MVSTBR plug (or FKCVR) must be used. Combination with TMSTBP plug components is not possible! 

Base strip - MDSTB 2,5/ 2-GF-5,08 - 1842364 

Header, Nominal current: 10 A, Rated voltage (III/2): 320 V, Number of positions: 2, Pitch: 5.08 mm, Color: green, Contact surface: Tin, Mounting: Wave soldering, The article can be aligned to create different nos. of positions! In combination with MVSTB or FKCV plug components, both an MVSTBW (or FKCVW) and an MVSTBR plug (or FKCVR) must be used. Combination with TMSTBP plug components is not possible! ~~Sl~~ Base strip - MDSTBV 2,5/ 2-GF-5,08 - 1845633 Header, Nominal current: 10 A, Rated voltage (III/2): 320 V, Number of positions: 2, Pitch: 5.08 mm, Color: green, Contact surface: Tin, Mounting: Wave soldering, The article can be aligned to create different nos. of positions! In combination with MVSTB or FKCV plug components, both an MVSTBW (or FKCVW) and an MVSTBR plug (or FKCVR) must be used. Combination with TMSTBP plug components is not possible! ~~=~~ 01/12/2017   Page 8 / 10 

https://www.phoenixcontact.com/gb/products/1777989 

## Printed-circuit board connector - MSTB 2,5/ 2-STF-5,08 - 1777989 

## Accessories 

Base strip - DFK-MSTBA 2,5/ 2-GF-5,08 - 1898981 

Header, Nominal current: 12 A, Rated voltage (III/2): 320 V, Number of positions: 2, Pitch: 5.08 mm, Color: green, Contact surface: Tin, Mounting: Wave soldering 

Base strip - DFK-MSTBVA 2,5/ 2-GF-5,08 - 1899281 

Header, Nominal current: 12 A, Rated voltage (III/2): 320 V, Number of positions: 2, Pitch: 5.08 mm, Color: green, Contact surface: Tin, Mounting: Wave soldering ~~$__~~ Base strip - EMSTB 2,5/ 2-GF-5,08 - 1899618 Header, Nominal current: 12 A, Rated voltage (III/2): 320 V, Number of positions: 2, Pitch: 5.08 mm, Color: green, Contact surface: Tin, Mounting: Press-in technology ~~SO~~ Base strip - EMSTBV 2,5/ 2-GF-5,08 - 1915217 Header, Nominal current: 12 A, Rated voltage (III/2): 320 V, Number of positions: 2, Pitch: 5.08 mm, Color: green, Contact surface: Tin, Mounting: Press-in technology ~~~~~ 

Base strip - MSTB 2,5/ 2-GF-5,08 THT - 1927564 

Header, Nominal current: 12 A, Rated voltage (III/2): 320 V, Number of positions: 2, Pitch: 5.08 mm, Color: black, Contact surface: Tin, Mounting: THR soldering, User information and design recommendations for through hole reflow technology can be found under “Downloads” 

01/12/2017   Page 9 / 10 

https://www.phoenixcontact.com/gb/products/1777989 

## Printed-circuit board connector - MSTB 2,5/ 2-STF-5,08 - 1777989 

## Accessories 

Base strip - MSTBV 2,5/ 2-GF-5,08 THT - 1940897 

Header, Nominal current: 12 A, Rated voltage (III/2): 320 V, Number of positions: 2, Pitch: 5.08 mm, Color: black, Contact surface: Tin, Mounting: THR soldering, User information and design recommendations for through hole reflow technology can be found under “Downloads” 

## Printed-circuit board connector - CC 2,5/ 2-GF-5,08 P26THR - 1954692 

Header, Nominal current: 12 A, Rated voltage (III/2): 320 V, Number of positions: 2, Pitch: 5.08 mm, Color: black, Contact surface: Tin, Mounting: THR soldering, User information and design recommendations for through hole reflow technology can be found under “Downloads” 

Printed-circuit board connector - CC 2,5/ 2-GF-5,08 P26THRR32 - 1954809 

Header, Nominal current: 12 A, Rated voltage (III/2): 320 V, Number of positions: 2, Pitch: 5.08 mm, Color: black, Contact surface: Tin, Mounting: THR soldering, User information and design recommendations for through hole reflow technology can be found under “Downloads” 

Printed-circuit board connector - CCV 2,5/ 2-GF-5,08 P26THR - 1955633 

Header, Nominal current: 12 A, Rated voltage (III/2): 320 V, Number of positions: 2, Pitch: 5.08 mm, Color: black, Contact surface: Tin, Mounting: THR soldering, User information and design recommendations for through hole reflow technology can be found under “Downloads” 

Printed-circuit board connector - CCV 2,5/ 2-GF-5,08 P26THRR32 - 1955743 

Header, Nominal current: 12 A, Rated voltage (III/2): 320 V, Number of positions: 2, Pitch: 5.08 mm, Color: black, Contact surface: Tin, Mounting: THR soldering, User information and design recommendations for through hole reflow technology can be found under “Downloads” 

Phoenix Contact 2017 © - all rights reserved http://www.phoenixcontact.com 

01/12/2017   Page 10 / 10

Updated at April 29, 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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