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Phoenix Contact 1779644
The figure shows a 10-position version of the product
AllConnectorsTerminal blocksPCB terminal blocks and connectors
Phoenix ContactOfficial Distributor

By Phoenix Contact

SKU
MPN
FRONT-MSTB 2,5/ 2-STF
Weight
0.007 kg
Series FRONT-MSTB

FRONT-MSTB 2,5/ 2-STF - PCB connector

PCB connector, nominal cross section: 2.5 mm2, color: green, nominal current: 12 A, rated voltage (III/2): 320 V, contact surface: Tin, contact connection type: Socket, number of potentials: 2, number of rows: 1, number of positions: 2, number of connections: 2, product range: FRONT-MSTB 2,5/..-STF, pitch: 5 mm, connection method: Front screw connection, screw head form: L Slotted, conductor/PCB connection direction: 0 °, locking clip: - Locking clip, plug-in system: COMBICON MSTB 2,5, locking: Screw locking mechanism, mounting: Screw flange, type of packaging: packed in cardboard

  • Well-known connection principle allows worldwide use
  • Optimized for tight installation situations: operation and conductor connection from one direction
  • Screwable flange for superior mechanical stability
  • Low temperature rise, thanks to maximum contact force
  • Allows connection of two conductors
Technical Specifications

Product properties

Product familyFRONT-MSTB 2,5/..-STF
Product lineCOMBICON Connectors M
TypeStandard
Number of Positions2
Pitch5 mm
Number of Connections2
Number of rows1
Number of potentials2
Mounting flangeScrew flange

Electrical properties

Nominal current IN12 A
Nominal voltage UN320 V
Degree of pollution3
Contact resistance1.5 mΩ
Rated voltage (III/3)250 V
Rated surge voltage (III/3)4 kV
Rated voltage (III/2)320 V
Rated surge voltage (III/2)4 kV
Rated voltage (II/2)630 V
Rated surge voltage (II/2)4 kV

Connection technology

TypeStandard
Connector systemCOMBICON MSTB 2,5
Nominal cross section2.5 mm²
Contact connection typeSocket

Interlock

Locking TypeScrew locking mechanism
Mounting flangeScrew flange
Tightening torque0.3 Nm

Conductor connection

Connection MethodFront screw connection
Conductor/PCB connection direction0 °
Conductor cross section rigid0.34 mm² ... 2.5 mm²
Conductor cross section flexible0.2 mm² ... 2.5 mm²
Conductor cross section AWG24 ... 12
Conductor cross section flexible, with ferrule without plastic sleeve0.25 mm² ... 2.5 mm²
Conductor cross section, flexible, with ferrule, with plastic sleeve0.25 mm² ... 2.5 mm²
2 conductors with same cross section, solid0.2 mm² ... 1.5 mm²
2 conductors with same cross section, flexible0.2 mm² ... 1.5 mm²
2 conductors with same cross section, flexible, with ferrule without plastic sleeve0.25 mm² ... 1 mm²
2 conductors with the same cross section, flexible, with TWIN ferrule with plastic sleeve0.5 mm² ... 1 mm²
Cylindrical gauge a x b / diameter2.8 mm x 2.0 mm / 2.4 mm
Stripping length10 mm
Tightening torque0.5 Nm ... 0.6 Nm

Specifications for ferrules without insulating collar

recommended crimping tool1212034 CRIMPFOX 6

Material data - contact

NoteWEEE/RoHS-compliant, free of whiskers according to IEC 60068-2-82/JEDEC JESD 201
Contact MaterialCu alloy
Surface characteristicshot-dip tin-plated
Metal surface terminal point (top layer)Tin (4 - 8 µm Sn)
Metal surface contact area (top layer)Tin (4 - 8 µm Sn)

Material data - housing

Color (Housing)green (6021)
Insulating materialPA
Insulating material groupI
CTI according to IEC 60112600
Flammability rating according to UL 94V0
Glow wire flammability index GWFI according to EN 60695-2-12850
Glow wire ignition temperature GWIT according to EN 60695-2-13775
Temperature for the ball pressure test according to EN 60695-10-2125 °C

Dimensions

Pitch5 mm
Width [w]19.8 mm
Height [h]15 mm
Length [l]27.2 mm

Mounting

Drive form screw headSlotted (L)

Flange

Tightening torque0.3 Nm

Notes

Notes on operationIn accordance with IEC 61984, COMBICON connectors have no switching power (COC). During designated use, they must not be plugged in or disconnected when carrying voltage or under load.

Test for conductor damage and slackening

SpecificationIEC 60999-1:1999-11
ResultTest passed

Pull-out test

SpecificationIEC 60999-1:1999-11
Conductor cross section/conductor type/tractive force setpoint/actual value0.2 mm² / solid / > 10 N
Conductor cross section/conductor type/tractive force setpoint/actual value0.34 mm² / flexible / > 15 N
Conductor cross section/conductor type/tractive force setpoint/actual value2.5 mm² / solid / > 50 N
Conductor cross section/conductor type/tractive force setpoint/actual value2.5 mm² / flexible / > 50 N

Insertion and withdrawal forces

ResultTest passed
No. of cycles25
Insertion strength per pos. approx.8 N
Withdraw strength per pos. approx.6 N

Torque test

SpecificationIEC 60999-1:1999-11

Resistance of inscriptions

SpecificationIEC 60068-2-70:1995-12
ResultTest passed

Polarization and coding

SpecificationIEC 60512-13-5:2006-02
ResultTest passed

Visual inspection

SpecificationIEC 60512-1-1:2002-02
ResultTest passed

Dimension check

SpecificationIEC 60512-1-2:2002-02
ResultTest passed

Vibration test

SpecificationIEC 60068-2-6:2007-12
Frequency10 - 150 - 10 Hz
Sweep speed1 octave/min
Amplitude0.35 mm (10 Hz ... 60.1 Hz)
Acceleration5g (60.1 Hz ... 150 Hz)
Test duration per axis2.5 h

Durability test

SpecificationIEC 60512-9-1:2010-03
Impulse withstand voltage at sea level4.8 kV
Contact resistance R11.5 mΩ
Contact resistance R21.6 mΩ
Insertion/withdrawal cycles25

Climatic test

SpecificationISO 6988:1985-02
Corrosive stress0.2 dm3 SO2 on 300 dm3/40 °C/1 cycle
Thermal stress100 °C/168  h
Power-frequency withstand voltage2.21 kV

Shocks

SpecificationIEC 60068-2-27:2008-02
Pulse shapeSemi-sinusoidal
Acceleration30g
Shock duration18 ms
Test directionsX-, Y- and Z-axis (pos. and neg.)

Ambient conditions

Ambient Temperature (Operation)-40 °C ... 100 °C (dependent on the derating curve)
Ambient temperature (storage/transport)-40 °C ... 70 °C
Relative humidity (storage/transport)30 % ... 70 %
Ambient temperature (assembly)-5 °C ... 100 °C

Thermal test | Test group C

SpecificationIEC 60512-5-1:2002-02
Tested number of positions24

Insulation resistance

SpecificationIEC 60512-3-1:2002-02
Insulation resistance, neighboring positions> 5 MΩ

Air clearances and creepage distances |

SpecificationIEC 60664-1:2007-04
Insulating material groupI
Comparative tracking index (IEC 60112)CTI 600
Rated insulation voltage (III/3)250 V
Rated surge voltage (III/3)4 kV
minimum clearance value - non-homogenous field (III/3)3 mm
minimum creepage distance (III/3)3.2 mm
Rated insulation voltage (III/2)320 V
Rated surge voltage (III/2)4 kV
minimum clearance value - non-homogenous field (III/2)3 mm
minimum creepage distance (III/2)3 mm
Rated insulation voltage (II/2)630 V
Rated surge voltage (II/2)4 kV
minimum clearance value - non-homogenous field (II/2)3 mm
minimum creepage distance (II/2)3.2 mm

Packaging specifications

Type of packagingpacked in cardboard
Accessories
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    1763058 - Removal aid, for FRONT-MSTB, facilitates extraction of several plugs mounted behind each other
  • Phoenix Contact0804183
    0804183
    0804183 -
  • Phoenix Contact0805409
    0805409
    0805409 -
  • Phoenix Contact1205053
    1205053
    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
  • Phoenix Contact1734634
    1734634
    1734634 - Coding profile, is inserted into the slot on the plug or inverted header, red insulating material
  • Phoenix Contact1051993
    1051993
    1051993 - Marker pen, for manual labeling of unprinted Zack strips, smear-proof and waterproof, line thickness 0.5 mm

Why Proax for Phoenix Contact 1779644?

Proax is an authorized distributor of Phoenix Contact 1779644 and one of Phoenix Contact's largest distributors in North America. Our highly skilled in-house technical team is ready to assist with any technical needs.

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Additional Information

Pack Size50
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