Easy meter installation with pre-wired Meter Management Units
Complete metering assembly with terminal blocks, fuses and optional test terminals.
SHM supplies an extensive range of meters mounted in a sealable rugged enclosure known as a Meter Management Unit or MMU. The MMU can be surface mounted on a wall or on a panel.
The MMU includes meter fuses and a neutral disconnect link – essential if no fused meter supply has been provided and the meter must be connected direct to the busbars.
All connections are to DIN-rail terminal blocks inside the unit. Wiring access is via conduit knock-outs.
Optional shrouded voltage reference sockets can be provided to allow easy connection of a portable power analyser for checking/testing. The power analyser’s clip-on CTs are used to monitor the current, and the analyser readings can be cross-checked against the meter readings.
CT shorting links provide for safe meter servicing.
- Meter ready to install – no cut-outs or special mounting facilities required
- No need for separate meter fusing
- Saves installation time and costs
- Easy meter servicing
- Voltage verification points available
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MMU1D (Standard Width)
Provides voltage fuses and neutral-disconnect links. Both 3-phase and single-phase units available. Optional shrouded voltage test points and optional CT shorting links.
Model shown is MMU1C3-P-T.
MMU2E (Dual Meters)
As MMU1 but with space for two meters.
Model shown is MMU2E3.
The MMU4 has space for four meters with separate voltage fusing/disconnection for each meter and shorting links for all CTs to allow meters to be independently changed.