Heatsink Protrusion Attachment Procedure; When Using A Heatsink Protrusion Attachment (Fr-A7Cn); Protrusion Of Heatsink Of The Fr-A740-160K Or Higher - Mitsubishi Electric FR-A720-0.4K Instruction Manual

7.5 Heatsink protrusion attachment procedure

When encasing the inverter in an enclosure, the generated heat amount in an enclosure can be greatly reduced by
installing the heatsink portion of the inverter outside the enclosure. When installing the inverter in a compact enclosure,
etc., this installation method is recommended.
7.5.1

When using a heatsink protrusion attachment (FR-A7CN)

For the FR-A720-1.5K to 90K, FR-A740-0.4K to 132K, a heatsink can be protruded outside the enclosure using a
heatsink protrusion attachment (FR-A7CN). (For the FR-A740-160K or higher, attachment is not necessary when the
heatsink is to be protruded.)
For a panel cut dimension drawing and an installation procedure of the heatsink protrusion attachment (FR-A7CN) to
the inverter, refer to a manual of "heatsink protrusion attachment".
7.5.2

Protrusion of heatsink of the FR-A740-160K or higher

(1) Panel cutting
Cut the panel of the enclosure according to the inverter capacity.
• FR-A740-160K, 185K
• FR-A740-315K, 355K
315
6-M10 screw
484
200 200
Hole
Unit: mm
6-M10 screw
771
315
Hole
Unit: mm
Heatsink protrusion attachment
• FR-A740-220K, 250K, 280K
662
300
Hole
• FR-A740-400K, 450K, 500K
976
300 300
Hole
procedure
6-M10 screw
300
Unit: mm
8-M10 screw
300
Unit: mm
7
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