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17 May 2008 |
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Harland Simon UPS design a standard range of wall or panel mounted external Manual Maintenance Bypass Switches (MMBS).
The MMBS are available as rotary switches or static type.
Ratings for rotary type switches are available - 20A to 160A either two pole or four pole switches.
The static version is currently available at either 10A or 16A single phase only.
The MMBS escutcheon reads Normal / Test / Bypass as standard, other escutcheon plates are available.
All enclosures are of sheet steel design.
All switches are key lockable or pad lockable in all 3 positions.
Wiring is to terminals via removal a gland plate on rotary switches and to IEC sockets on the static version.
These wall mounted MMBS enclosures can be retrofitted to an existing UPS installation, or provided as part of
the initial contract.
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The MMBS enclosures are provided with full connection instructions for easy electrical installation.
Alternative combination and designs are available
Alternative distribution enclosures are also available which can provide the UPS installation
with optional power distribution outlets and typically house local incoming isolators,
MMBS, and customer specified MCB’s.
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The benefit of a MMBS is that the UPS can be serviced or completely removed without disruption to the critical load,
hence avoiding any down time.
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Download specification (PDF) 
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