Crouse-Hinds series MTL Megablock™ is a DIN-rail mounted passive hub designed for use in FOUNDATION™ fieldbus H1 and Profibus PA networks. Megablocks minimize hand wiring and allow individual devices to be added to and removed from the segment without disrupting network communication. The SpurGuard™ option provides short circuit protection for the segment.
Hazardous area approvals permit installation in a variety of configurations in Zone 1 or 2 and Division 1 or 2. Within Zone 2 or Division 2, Megablocks may be installed as part of non-sparking (non-arcing) or energy-limited (non-incendive) circuits.
| F300 models: Megablocks for Safe Area and Zone/Div 2 applications | |||
| Part Number | Description | Field device certification compatibility | Hazardous Area Certifications * |
| F304 | 4 way Megablock – screw terminals - including F97 terminator | uncertified, Ex d, Ex e, Ex nA, Ex ic with Ex ic voltage limited trunk + |
ATEX & IECEx Approved |
| F308 | 8 way Megablock – screw terminals - including F97 terminator | ATEX & IECEx Approved | |
| F312 | 12 way Megablock – screw terminals - including F97 terminator | ATEX & IECEx Approved | |
| F304-PC | 4 way Megablock – spring-clamp terminals - including F97 terminator | ATEX & IECEx Approved | |
| F308-PC | 8 way Megablock – spring-clamp terminals - including F97 terminator | ATEX & IECEx Approved | |
| F312-PC | 12 way Megablock – spring-clamp terminals - including F97 terminator | ATEX & IECEx Approved | |
| F300 Accessories | |||
| Part Number | Description | ||
| F300-A01-5 | Trunk-spur partition – pack of 5 | ||
| FS32 | Fieldbus Surge Protector | ||
| F300-BAR-5 | Pack of 5 trunk bars | ||
| F304-BAR-10 | Pack of 10 4 way spur bars (two F304-BARs required for each F304) | ||
| F308-BAR-10 | Pack of 10 8 way spur bars (two F308-BARs required for each F308) | ||
| F312-BAR-10 | Pack of 10 12 way spur bars (two F312-BARs required for each F312) | ||
| F2xx-XE models: Ex me Megablocks for Zone 1 applications | |||
| Part Number | Description | Field device certification compatibility | Hazardous Area Certifications * |
| F245-XE | 4 way Megablock – screw terminals | Ex d, Ex e | ATEX & IECEx Approved |
| F247-XE | 4 way Megablock – screw terminals with internal Terminator | ATEX & IECEx Approved | |
| F251-XE | 8 way Megablock – screw terminals | ATEX & IECEx Approved | |
| F253-XE | 8 way Megablock – screw terminals with internal Terminator | ATEX & IECEx Approved | |
| F259-XE | 10 way Megablock – screw terminals with internal Terminator | ATEX & IECEx Approved | |
| F271-XE | 12 way Megablock – screw terminals with internal terminator | ATEX & IECEx Approved | |
| F2xx-XE Accessories | |||
| Part Number | Description | ||
| FS32-XE | Fieldbus trunk and spur surge protection device, Ex eb mb | ||
| FS32-BAR | Earthing (grounding) bar for FS32-XE | ||
| F2xx-IS models: Intrinsically safe Megablocks for Zone 1 applications | |||
| Part Number | Description | Field device certification compatibility | Hazardous Area Certifications * |
| F245-IS | 4 way Megablock – screw terminals | Ex i with Ex i certified fieldbus trunk + | ATEX & IECEx Approved |
| F247-IS | 4 way Megablock – screw terminals with internal Terminator | ATEX & IECEx Approved | |
| F245-IS-6 | 4 way Megablock – screw terminals with 50mA maximum device current ^ | ATEX & IECEx Approved | |
| F251-IS | 8 way Megablock – screw terminals | ATEX & IECEx Approved | |
| F253-IS | 8 way Megablock – screw terminals with internal Terminator | ATEX & IECEx Approved | |
| F271-IS | 12 way Megablock – screw terminals with internal terminator | ATEX & IECEx Approved | |
| F245-IS-PC | 4 way Megablock – spring clamp terminals | ATEX & IECEx Approved | |
| F247-IS-PC | 4 way Megablock – spring clamp terminals with internal Terminator | ATEX & IECEx Approved | |
| F245-IS-6-PC | 4 way Megablock – spring clamp terminals with 50mA maximum device current ^ | ATEX & IECEx Approved | |
| F251-IS-PC | 8 way Megablock – spring clamp terminals | ATEX & IECEx Approved | |
| F253-IS-PC | 8 way Megablock – spring clamp terminals with internal Terminator | ATEX & IECEx Approved | |
| F271-IS-PC | 12 way Megablock – spring clamp terminals with internal terminator | ATEX & IECEx Approved | |
| F2xx-IS Accessories | |||
| Part Number | Description | ||
| FS32 | Fieldbus Surge Protector | ||
| F300-BAR-5 | Pack of 5 trunk bars | ||
| F304-BAR-10 | Pack of 10 4 way spur bars (two F304-BARs required for each F245/7) | ||
| F308-BAR-10 | Pack of 10 8 way spur bars (two F308-BARs required for each F251/3) | ||
| F312-BAR-10 | Pack of 10 12 way spur bars (two F312-BARs required for each F271) | ||
| FCS-MBx-SG models: Classic Megablocks for Safe Area and Zone/Div 2 applications † | |||
| Part Number | Description | Field device certification compatibility | Hazardous Area Certifications * |
| FCS-MB4-SG | 4 way Megablock – screw terminals | uncertified, Ex d, Ex e, Ex nA |
ATEX Approved |
| FCS-MB4-SG-T | 4 way Megablock – screw terminals with internal Terminator | ATEX Approved | |
| FCS-MB8-SG | 8 way Megablock – screw terminals | ATEX Approved | |
| FCS-MB8-SG-T | 8 way Megablock – screw terminals with internal Terminator | ATEX Approved | |
| FCS-MB10-SG | 10 way Megablock – screw terminals | ATEX Approved | |
| FCS-MB10-SG-T | 10 way Megablock – screw terminals with internal Terminator | ATEX Approved | |
| F118 | 10 way Megablock – screw terminals with switched Terminator | ATEX Approved | |
| FCS-MB12-SG | 12 way Megablock – screw terminals | ATEX Approved | |
| FCS-MB12-SG-T | 12 way Megablock – screw terminals with internal terminator | ATEX Approved | |
| F215 | 12 way Megablock – screw terminals with switched terminator | ATEX Approved | |
* Select Certification Reports under the Resources tab for full list of certifications
+ See MTL simplex and redundant FISCO power supplies to provide Ex i certfified FISCO trunk.
^ F245-IS-6 is designed for use with high current consumption IS fieldbus devices such as radar level transmitters
† Classic products are approaching the end stage of the product lifecycle and are recommended for providing replacements on an existing installation. For new applications F300 Megablocks are recommended.
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