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INDUSTRIAL LAN | WIRING COMPONENTS AND TESTERS

Fieldbus Megablocks

Fieldbus Megablocks

Megablocks are DIN rail mounted passive hubs for Foundation Fieldbus networks. Also called ‘bricks’ or ‘couplers’, Megablocks connect several field devices to the network trunk cable and provide short circuit protection for the segment.

Megablocks minimize hand wiring and allow individual devices to be added to and removed from the segment without disrupting network communication. A green power LED on each unit indicates whether DC power is present.

Megablocks are available in two, four, eight, ten, and twelve drop versions. Multiple Megablocks are easily wired to one another to allow larger segments to be constructed.

The Megablock Terminator is easily wired to any Megablock to provide one of the two terminators required on each segment. The Megablock Terminator is clearly marked with a large "T" for easy identification by field personnel.

The Megablocks and a Megablock Terminator are ideal for a star or chickenfoot topology where several transmitters are connected at a single field junction box, as shown above.

 

 

 

The latest version of the Megablock (F300 series) is now available in 4, 8, and 12 port versions and features:

  • A simpler design which translates to a significantly higher MTTF
  • Dual Trunk connector allows Megablock swapout without affecting downstream Megablocks
  • Enhanced certifications - Ex ic and IEC Ex
  • Supports pluggable Surge Protection eliminating additional DIN Rail space and wiring
  • Each unit comes with the F97 Terminator allowing the user to determine which Megablock is the last one on the Trunk

 

For an overview of Megablock features, please see the Megablock Product Overview.

Accessories for the Megablocks including DIN Rail, DIN Rail End Stops, and Megablock Trunk Covers are shown on our Accessories page.

 

Free Download - Adobe Acrobat Reader

The DXF links in the Drawings column below are mechanical drawings of the product that may be included in your AutoCAD® or equivalent CAD drawings. Some drawings are also contained in a Zip compressed file.  The remaining table entries are PDF files that may be viewed with Adobe’s Acrobat Reader.

Part Number Description Data Sheet Installation Instructions Drawing (DXF) Certification Applications
F304 4 way Megablock with screw terminals and F97 Terminator PS-072

502-461

F304.ZIP

CC-037

CC-038

RELC11ATEX1010X

CC-039

Class 1, Div 2, Groups ABCD, T4

Ex nA [nL] IIC T4 (Canada, IEC Ex)

Class I, Zone 2 IIC T4

II 3 G Ex nA IIC T4 Gc

II 3 G Ex nA [ic] IIC T4

II 3 G Ex ic IIC T4

Non-Arcing Trunk/Non-Incendive (Energy Limited) Spurs

F308 8 way Megablock with screw terminals and F97 Terminator F308.ZIP
F312 12 way Megablock with screw terminals and F97 Terminator F312.ZIP
Part Number Description Data Sheet Installation Instructions Drawing (DXF) Certification Applications
FCS-MB2-SG Megablock, 2 Device Connections, w/ SpurGuards PS-019

500-275

French

German

 

502-175

FCS-MB2-SG.DXF



CC-003
CC-005

CC-032

CC-033

 


RELC07ATEX1001X

Class 1, Div 2, Groups ABCD, T4

Ex nA [nL] IIC T4 (Canada)

Class I, Zone 2 IIC T4

II 3 G Ex nA IIC T4 Gc

FCS-MB4-SG Megablock, 4 Device Connections, w/ SpurGuards FCS-MB4-SG.DXF
FCS-MB4-SG-T Megablock, 4 Device Connections, w/ SpurGuards and Internal Terminator FCS-MB4-SG-T.DXF
FCS-MB8-SG Megablock, 8 Device Connections, w/ SpurGuards FCS-MB8-SG.DXF
FCS-MB8-SG-T Megablock, 8 Device Connections, w/ SpurGuards and Internal Terminator FCS-MB8-SG-T.DXF
FCS-MB10-SG Megablock, 10 Device Connections, w/ SpurGuards FCS-MB10-SG.DXF
FCS-MB10-SG-T Megablock, 10 Device Connections, w/ SpurGuards and Internal Terminator FCS-MB10-SG-T.DXF
F118 Megablock, 10 Device Connections, w/ SpurGuards and Internal Switchable Terminator F118.DXF
FCS-MB12-SG Megablock, 12 Device Connections, w/ SpurGuards FCS-MB12-SG.DXF
FCS-MB12-SG-T Megablock, 12 Device Connections, w/ SpurGuards and Internal Terminator FCS-MB12-SG-T.DXF
F215 Megablock, 12 Device Connections, w/ SpurGuards and Internal Switchable Terminator F215.DXF
Part Number Description Data Sheet Installation Instructions Drawing (DXF) Certification Applications
F241 IS Megablock, 2 device connections, w/ SpurGuards PS-016

500-465

French

German

 

502-042

502-913

F241.DXF


CC-014


CC-018


CC-015

 

CC-016

Class I Div I, Groups ABCD, T4

Ex ia IIC T4

Class I Zone 0 AEx ia IIC T4

II 2 G Ex ia IIC T4

F245 IS Megablock, 4 device connections, w/ SpurGuards F245.DXF
F247 IS Megablock, 4 device connections, w/ Terminator and SpurGuards F247.DXF
F251 IS Megablock, 8 device connections, w/ SpurGuards F251.DXF
F253 IS Megablock, 8 device connections, w/ Terminator and SpurGuards F253.DXF
F259 IS Megablock, 10 device connections, w/ Terminator and SpurGuards F259.DXF
F261 IS Megablock, 10 device connections, w/ Switchable Terminator and SpurGuards F261.DXF
F271 IS Megablock, 12 device connections, w/ Terminator and SpurGuards F271.DXF

CC-015

CC-016

II 2 G Ex ia IIC T4
Part Number Description Data Sheet Installation Instructions Drawing (DXF) Certification Applications
F245-XE XE Megablock, 4 device connections, w/ SpurGuards PS-044

501-400

502-039

F245-XE.DXF


CC-020

II 2 G Ex em IIC T4

F247-XE XE Megablock, 4 device connections, w/ SpurGuards and fixed Terminator F247-XE.DXF
F251-XE XE Megablock, 8 device connections, w/ SpurGuards F251-XE.DXF
F253-XE XE Megablock, 8 device connections, w/ SpurGuards and fixed Terminator F253-XE.DXF
F259-XE XE Megablock, 10 device connections, w/ Terminator and SpurGuards F259-XE.DXF
F271-XE XE Megablock, 12 device connections, w/ Terminator and SpurGuards F271-XE.DXF
Part Number Description Data Sheet Installation Instructions Drawing (DXF) Certification Applications
FCS-MB2 Megablock, 2 Device Connections PS-019

500-275

French

German

FCS-MB2.DXF



CC-002


CC-003


CC-004

RELC07ATEX1004X

II 3 G Ex nA IIC T4 Gc

Ex nA IIC T4

Ex ia IIC T4

Class I, Div 2, Groups ABCD, T4

Class I, Zone 2, IIC T4

Class I, Div 1, Groups ABCD, T4

 

FISCO

FCS-MB4 Megablock, 4 Device Connections FCS-MB4.DXF
FCS-MB8 Megablock, 8 Device Connections FCS-MB8.DXF
FCS-MB10-T Megablock, 10 Device Connections, w/ Internal Terminator FCS-MB10-T.DXF