Item no. 256-508/000-009/999-950

PCB terminal block; push-button; 2.5 mm²; Pin spacing 7.5/7.62 mm; 8-pole; suitable for Ex-e applications; CAGE CLAMP®; commoning option; 2,50 mm²; light gray

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

Product details

Electrical data
Ex information
Ratings per ATEX: PTB 06 ATEX 1061 U / IECEx: PTB 06.0042 U
Rated voltage EN (Ex e II) 275 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 insulated ferrule 0.25 … 1.5 mm²
Fine-stranded conductor; with uninsulated ferrule 0.25 … 1.5 mm²
Strip length 5 … 6 mm / 0.2 … 0.24 inch
Conductor connection direction to PCB 45 °
Pole No. 8
Total number of connection points 8
Total number of potentials 8
Number of connection types 1
Number of levels 1
Note (conductor cross-section) 12 AWG: THHN, THWN
Physical data
Pin spacing 7.5/7.62 mm / 0.295/0.3 inch
Width 62.9 mm / 2.476 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 with tolerance 1.1 (+0.1) mm
PCB contact
PCB contact THT
Solder pin arrangement over the entire terminal strip (in-line)
Number of solder pins per potential 2
Material Data
Color light gray
Material group I
Insulation material Polyamide (PA66)
Flammability class per UL94 V0
Clamping spring material Chrome nickel spring steel (CrNi)
Contact material Electrolytic copper (ECu)
Contact plating tin-plated
Fire load 0.165 MJ
Weight 9.4 g
Environmental Requirements
Limit temperature range -60 … +105 °C
Commercial data
Product Group 4 (Printed Circuit)
Packaging type BOX
Country of origin CH
GTIN 4044918764544
Customs tariff number 85369010000
Approvals / Certificates
Additional Approval Text
Certificate name
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
Compatible products
Installation Notes
4 Images
Conductor termination

Inserting/removing a conductor – 256 Series.

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

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Formation of groups using housings of different colors.

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2 Images

Testing with test probes.

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