Eaton MTL

MTL Instruments Group


AS-i Megablock range

Please note that the Fieldbus Megablock and the A100 & 102 AS-i Megablocks has been terminated and the products listed in the Last Time Buy table below should only be purchased for maintenance purposes (spares and repairs).

Product Termination Notice and ‘Last time buy’
Statement issued Last time buy Replacements and notes
04 April 2017 15th May
F300 Megablock range is recommended except for IS applications for which the F200-IS Megablock range is recommended.
Products: FCS-MB2 2 way Megablock, FCS-MB4 4 way Megablock, FCS-MB8 8 way Megablock, FCS-MB10-T 10 way Megablock with internal Terminator, A100 4-drop AS-i Megablock, A102 8-way AS-i Megablock

AS-i Megablocks are DIN-rail mounted passive hubs for the AS-i network. They connect several AS-i devices to the network trunk cable and provide short circuit protection to the segment. The AS–i Megablock itself does not contain an AS–i chip or communicate over the AS–i network, so it consumes no network communication resources (bandwidth, slave addresses, etc.). They are used to interconnect AS–i master and slave devices that do contain AS–i chips.

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.

For product certificates <click here>

Product Code Description Downloads

intrinsically safe logo Symbol denotes that the equipment is suitable for use in hazardous area applications.
fsm logo Symbol denotes that the product has been assessed for functional safety applications

A100   4-drop AS-i Megablock Datasheet 
A101   4-drop AS-i Megablock with integrated SpurGuard™ short circuit protection Datasheet 
A102   8-way AS-i Megablock Datasheet 
A103   8-way AS-i Megablock with integrated SpurGuard™ short circuit protection Datasheet