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Item no. 256-743/999-950

Stackable PCB terminal block; push-button; 2.5 mm²; Pin spacing 5/5.08 mm; 1-pole; suitable for Ex-e applications; CAGE CLAMP®; commoning option; 2,50 mm²; light gray

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PU (SPU): 600 (100) Piece
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The item is already added and will not be added again. If necessary, please adjust the quantity directly on the article.
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Description


  • Modular terminal blocks with push-button actuated CAGE CLAMP®
  • Set to metric or inch pin spacing by compressing terminal strips together or pulling them apart
  • Ideal for in-the-field wiring thanks to simplified push-button actuation
  • Convenient, tool-free operation

Product details

Details

Electrical data

Ratings per IEC/EN 60664-1
Legend (ratings) (III / 2) ≙ Overvoltage category III / Pollution degree 2
Approvals per UL 1059
Rated voltage UL (Use Group B) 300 V
Rated current UL (Use Group B) 15 A
Rated voltage UL (Use Group D) 300 V
Rated current UL (Use Group D) 10 A
Approvals per CSA
Rated voltage CSA (Use Group B) 300 V
Rated current CSA (Use Group B) 15 A
Rated voltage CSA (Use Group D) 300 V
Rated current CSA (Use Group D) 10 A
Approvals Ex
Rated voltage EN (Ex e II) 176 V
Rated current (Ex e II) 16 A

Connection data

Connection technology CAGE CLAMP®
Actuation type Push-button
Solid conductor 0.08 … 2.5 mm² / 28 … 12 AWG
Fine-stranded conductor 0.08 … 2.5 mm² / 28 … 12 AWG
Fine-stranded conductor with ferrule with plastic collar 0.25 … 1.5 mm²
Fine-stranded conductor with ferrule without plastic collar 0.25 … 1.5 mm²
Strip length 5 … 6 mm / 0.2 … 0.24 inch
Conductor entry angle to the PCB 45 °
No. of poles 1
Total number of connection points 1
Total number of potentials 1
Number of connection types 1
Number of levels 1
Note (conductor cross-section) 12 AWG: THHN, THWN

Geometrical Data

Pin spacing 5/5.08 mm / 0.197/0.2 inch
Width 7.8 mm / 0.307 inch
Height 22.2 mm / 0.874 inch
Height from the surface 18.2 mm / 0.717 inch
Depth 17.6 mm / 0.693 inch
Solder pin length 4 mm
Solder pin dimensions 0.7 x 0.7 mm
Drilled hole diameter (tolerance) 1.1(- … +0.1) mm

PCB contact

PCB contact THT
Solder pin arrangement within the terminal block, in line
Number of solder pins per potential 2

Material Data

Color light gray
Material group I
Insulating material Polyamide 66 (PA 66)
Flammability class per UL94 V0
Clamping spring material Chrome nickel spring steel (CrNi)
Contact material Electrolytic copper (ECu)
Contact plating tin-plated
Fire load 0.014 MJ
Weight 0.9

Environmental Requirements

Limit temperature range -60 … +105 °C

Commercial data

Product Group 4 (Printed Circuit)
Packaging type BOX
Country of origin CH
GTIN 4044918758796
Customs Tariff No. 85369010000

Approvals / Certificates

Ex-Approvals

Approval
Additional Approval Text
Certificate name
Language
Approval: AEx
UL International Germany GmbH c/o Physikalisch Technische Bundesanstalt
Additional Approval Text UL 60079
Certificate name: E185892 sec.3
Approval: ATEx
Physikalisch Technische Bundesanstalt (PTB)
Additional Approval Text EN 60079
Certificate name: PTB 06 Atex 1061 U (II 2 G Ex eII bzw. I M2 Ex eI)
Approval: IECEx
Physikalisch Technische Bundesanstalt
Additional Approval Text IEC 60079
Certificate name: IECEx PTB 06.0042U

Downloads

Documentation

Additional Information

CAD/CAE-Data

CAD data

2D/3D Models 256-743/999-950

CAE data

EPLAN Data Portal 256-743/999-950

Compatible products

End plate

Item no.: 256-100
End plate; snap-fit type; 1 mm thick; gray
PCB Interconnect > Item no. 256-100

End plate

PU (SPU): 2000 (100) Piece
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Item no.: 256-200
End plate; snap-fit type; 1 mm thick; dark gray
PCB Interconnect > Item no. 256-200

End plate

PU (SPU): 2000 (100) Piece
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Item no.: 256-300
End plate; snap-fit type; 1 mm thick; light gray
PCB Interconnect > Item no. 256-300

End plate

PU (SPU): 2000 (100) Piece
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Marking accessories

Testing and measuring

Installation Notes

4 pictures
Inserting a conductor

Inserting/removing a conductor – 256 Series.

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1 picture
Assembly

Possible conductor arrangement with terminal strips staggered (for 256 Series only).

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1 picture
Marking

Formation of groups using housings of different colors.

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2 pictures
Testing

Testing with test probes.

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