M-Pro Optional Accessories - GE M-PACT Operating And Installation Instructions

Air circuit breakers
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M-PRO Optional Accessories

M-PRO 20/30/40: plug-in portable Power Box
Adjustments to settings and curve selection may only be done
when the circuit breaker is open. If there is no permanent
auxiliary power source, a portable Power Box may be used to
energise the M-PRO unit this, for this purpose.
Power is provided by three 9V PP3 non-rechargeable batteries
and the Power Box is easily plugged into a test port on the
front of the M-PRO unit.
For all models of M-PRO: Auxiliary Power Unit
This may be permanently fitted within the circuit breaker
cubicle to ensure that M-PRO is powered independently and
continuously at all times. The Power Unit will accept any input
supply voltage between 24V and 264V AC or DC.
The recommended backup protection is a GE Power Controls
HRC fuse link Type NIT4 with Type RS20 fuse holder. For
more detailed installation and electrical specification refer to
APP034 available from GE Power controls.
Note: It is not recommended to supply M-PRO with any
alternative power supply unit.
Plug-in portable Test Unit
This permits secondary injection testing of all the protection
features provided by the M-PRO unit with the circuit breaker
open or closed.
All selected settings may be verified and tests made to trip the
circuit breaker or not as required (if 'no trip' is selected M-PRO
will indicate actual tripping time). A 'force trip' facility is
provided to check that the ability of M-PRO to cause an actual
trip remains unimpaired.
The Test Unit incorporates a set of rechargeable batteries for
which a charger unit is supplied as standard.
M-PRO 20/30/40 test box
M-PRO 17 test box
32

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