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GE Grid Solutions
Grid Automation
Avda. Pinoa, 10
48170 Zamudio
SPAIN
T +34 94 485 88 00
F +34 94 485 88 45
1.
INTRODUCTION
The MM300 is a modular motor protection and control system designed specifically for low-voltage motor
applications. It was launched to the market in 2007.
The aim of this report is to provide recommendations for the installation of the MM300 relay that may be
considered to optimize motor protection reliability.
At the date of this report there are more than 37000 units supplied worldwide and installed in many
different applications and countries.
2.
MM300 PERFORMANCE
2.1.
Hardware
The MM300 is packaged in a modular arrangement.
Fig. 1 Relay base and expansion modules.
The base module consists of:
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Slot A: power supply.
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Slot B: CPU and communication module.
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Slot C: IO_C Vac Inputs/Outputs module or IO_E Vdc Inputs/Outputs module.
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Slot D: IO_A CT module.
