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Phoenix Contact 1786831 Printed-circuit board connector

The PHOENIX CONTACT MSTB 2,5/ 2-STF is a robust and versatile printed-circuit board connector designed for demanding industrial environments. Its well-known connection principle ensures worldwide usability, while the low temperature rise and screwable flange contribute to superior mechanical stability and efficient heat dissipation. This connector is ideal for applications requiring secure and reliable connections between two conductors, offering a nominal current of 12A and a rated voltage of 320V. It is compatible with various conductor sizes and AWG gauges, making it a flexible solution for diverse electronic designs.

Authorized Distributors
Source:Newark
Part No:1786831
Stock:275
Inv Date:05-28-2026
Price: Unit price: $3.97
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Source:DigiKey
Part No:1786831
Stock:1209
Inv Date:05-28-2026
Price: Unit price: $2.32
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Part No:1786831
Stock:2223
Inv Date:05-29-2026
Price: Unit price: $2.31
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Part No:1786831
Stock:199
Inv Date:05-28-2026
Price: Unit price: $5.02
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Part No:1786831
Stock:280
Inv Date:05-28-2026
Price: Unit price: $1.89
Buy/RFQ:
Part No:1786831
Stock:280
Inv Date:05-28-2026
Price: Unit price: $1.89
Buy/RFQ:
Part No:1786831
Stock:167
Inv Date:05-29-2026
Price: N/A
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Phoenix Contact 1786831 Printed-circuit board connector Specifications:

  • Nominal current: 12 A
  • Rated voltage (III/2): 320 V
  • Number of positions: 2
  • Pitch: 5 mm
  • Connection method: Screw connection
  • Color: green
  • Contact surface: Tin
  • Packing unit: 1 pc
  • Weight per Piece (excluding packing): 4.62 g
  • Custom tariff number: 85366990
  • Country of origin: United States
  • Width: 20.01 mm
  • Dimension a: 5 mm
  • Range of articles: MSTB 2,5/..-STF
  • 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 (II/2): 630 V
  • Connection in acc. with standard: EN-VDE
  • Nominal cross section: 2.5 mm²
  • Maximum load current: 12 A (with a 2.5 mm² conductor cross section)
  • 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
  • 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 sleeve, min.: 0.25 mm²
  • 2 conductors with same cross section, stranded, ferrules without plastic sleeve, max.: 1 mm²
  • 2 conductors with same cross section, stranded, TWIN ferrules with plastic sleeve, min.: 0.5 mm²
  • 2 conductors with same cross section, stranded, TWIN ferrules with plastic sleeve, max.: 1.5 mm²
  • Minimum AWG according to UL/CUL: 30
  • Maximum AWG according to UL/CUL: 12
  • eCl@ss 4.0: 272607xx
  • eCl@ss 4.1: 27260701
  • eCl@ss 5.0: 27260701
  • eCl@ss 5.1: 27260701
  • eCl@ss 6.0: 27260704
  • eCl@ss 7.0: 27440402
  • eCl@ss 8.0: 27440309
  • ETIM 3.0: EC001121
  • ETIM 4.0: EC002638
  • ETIM 5.0: EC002638
  • UNSPSC 6.01: 30211810
  • UNSPSC 7.0901: 39121409
  • UNSPSC 11: 39121409
  • UNSPSC 12.01: 39121409
  • UNSPSC 13.2: 39121409

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Frequently Asked Questions

Where can I buy Phoenix Contact 1786831?

You can click on the BUY or RFQ button to purchase 1786831 from an authorized Phoenix Contact distributor.

How do I troubleshoot issues or seek technical support for part 1786831?

You can download the 1786831 datasheet or visit the Phoenix Contact website for support.

Who is the manufacturer of 1786831?

Phoenix Contact

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