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Technical overview
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M-PACT Plus
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Fixed Circuit Breaker
All M-PACT Plus fi xed pattern air circuit breakers incorporate
a stored energy mechanism. The spring can be charged
either manually or electrically via a motor operator that is
automatically activated after the closing operation.
IP43 front panel and door escutcheon seals are standard
features with IP20 protected secondary isolating contacts.
For enhanced protection, an optional IP54 door panel is also
available.
• Trip-free operating mechanism
• Positive 'ON/OFF' contact indication
• Mechanical/electrical anti-pumping device
• Charging spring status indication (optional)
• Ergonomic manual spring charging handle
• Field-mountable range of accessories
• Auxiliary switches 5 NO and 3 NC, 10A 250V (standard)
• Mechanical trip alarm switch (1NO) (optional)
• Padlockable push-button cover
• Mechanical cable interlocking (optional)
• Termination: rear, horizontal or front access (optional)
• Electrical clearances according to IEC 60947-2
• Front access of secondary terminals for simple connection
Installation
Fixed pattern M-PACT Plus can be fastened into any suitable
switchboard or cubicle arrangement using four M8 bolts.
Clearance is only required above the unit for the removal and
inspection of the arc chutes (see dimensional drawings for
mounting details and recommended clearance distances).
An earthing point is provided on either side of the circuit
breaker.
Power Supply
All stated short circuit ratings are certifi ed with incoming
supply connection made to either upper or lower terminals..
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Motorised spring charging unit (optional)
2
MPRO Protection Relay (optional)
3
Secondary contacts
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Shunt trip (optional)
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Closing coil (optional)
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Undervoltage release (optional)
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Manual charging handle
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ON/OFF push-buttons
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Push-button padlockable covers
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Positive contact indication
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Charging spring status indication
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Mounting plate
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