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.
• F2xx-IS models: Intrinsically Safe Megablocks for Zone 1 applications
• F2xx-XE models: Megablocks for Zone/Div 1 applications
• F300 models: Megablocks for Safe Area and Zone/Div 2 applications

Certifications and compliances
• For a complete listing of certification and approvals across our MTL Megablock range,
download the product datasheets in the resources section of this family page.
Design features
• A green power LED on each unit indicates whether at least 9V dc is present.
• 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
• Choice of rising cage-clamp screw terminal or spring clamp type connections simplifies commissioning and maintenance
• Available with built-in SpurGuard™ protectors that prevent a short circuit in any of the individual transmitters or spur
• cable runs from bringing the entire fieldbus segment down
• A red LED near each spur connection indicates that a spur is shorted and is in “over-current” mode
Standard materials
• Housing: Polycarbonate
Eaton BA488CF-F Fieldbus intrinsically safe display,panel mounting
Eaton BA488CF-P Fieldbus intrinsically safe display,panel mounting
Eaton BA618CF-F Fieldbus display, panel mounting
Eaton BA688CF-F Fieldbus safe area display, panel mounting
Eaton BA688CF-P Fieldbus safe area display, panel mounting
Eaton F11 Fieldbus Power Hub
Eaton F11-Labkit Fieldbus F11 Power Hub and cables
Eaton F11-YK2 Fieldbus F11 Power Hub with fieldbus cables
Eaton FCS-A11 Battery Pack (Power Hub power in the field)
Eaton F100 General purpose Zone 2/Division 2 terminator
Eaton FCS-MBT Intrinsically safe Zone 0/Division 1 terminator
Eaton FCS-MBT-XE Ex me Zone 1 terminator
Eaton FBT-5 Fieldbus wiring validator
Eaton FBT-6 Fieldbus Monitor for FOUNDATION fieldbus™ H1
Eaton FBT-6-PA Fieldbus Monitor for Profibus PA
Eaton FP32 Fieldbus trunk and spur surge protection
Eaton FS32 Fieldbus trunk and spur surge protection device
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