Installation Guide

Table Of Contents
TETRA MBS UNIT. INSTALLATION GUIDE
F067646PT_2801
Page 58 of 62
en
6.3.7 CONNECTING / DISCONNECTING THE MBS AC MAINS SUPPLY
The electrical supply to the MBS is connected through a connector with a three-wire cable.
This cable shall be connected to the electrical supply network, which must comply with the standards
and/or regulations of the country in which the MBS is installed.
The connection of the MBS to the electrical installation must be carried out by specialised personnel.
The maximum current required by the MBS is 1 A at 220-240 V AC or 2 A at 100-130 V AC
The electrical installation to which the MBS is connected must comply with the current standards for
electrical installations in the country in which the MBS is installed. The nominal phase current of the MBS is 2
A at 110 V AC and 1 A at 220 V AC
The MBS requires the following external protection devices:
1. A 2-pole overcurrent protection device rated 1 A for 230 VAC power supply or 2 A for 110 VAC
power supply (when two MBS Units are supplied using the same overcurrent protection device,
the ratings will be 2 A for 230 VAC or 4 A for 110 VAC). This device shall be in accordance with
the country regulations.
Only for USA and Canada: this over-current protection device shall be UL listed and CSA
certified.
2. Earth leakage protection using a residual current device with a sensitivity of 30 mA.
The MBS must be connected to earth as described in this Installation Guide.
The MBS can be disconnected by unplugging the aerial power connector, after disconnecting the
aerial power supply connector.