Motor mechanism MCCB NSX MT100 MT250 MT400 MT630 Remoter Operated Motor

Specification of

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Motor-mechanism module (Remote Operated Motor Mechanism MT100-250 MT400-630)

When equipped with a motor-mechanism module, Compact NS circuit breakers feature very high mechanical endurance as well as easy and sure operation:

• all circuit-breaker indications and information remain visible and accessible, including trip-unit settings and indications
• suitability for isolation is maintained and padlocking remains possible
• double insulation of the front face.

Applications

• local motor-driven operation, centralised operation, automatic distribution control
• normal/standby source changeover or switching to a replacement source to optimise energy costs
• load shedding and reconnection to optimise energy costs
• synchrocoupling.

Automatic operation

• circuit-breaker ON and OFF controlled by two impulse-type or maintained control signals
• automatic spring charging following voluntary tripping (by MN or MX), with standard wiring
• mandatory manual reset following tripping due to an electrical fault.

Manual operation

• transfer to manual mode using a switch (9) with possibility of remote mode indication
• circuit-breaker ON and OFF controlled by 2 pushbuttons
• recharging of stored-energy system by pumping the lever 9 times
• padlocking in OFF position.

Installation and connection

All installation (fixed, plug-in/withdrawable) and connection possibilities are

maintained.

Motor-mechanism module connections are made behind its front cover to

integrated terminals, for cables up to 2.5 mm2.

Accessories

• keylock for locking in OFF position
• operations counter for the Compact NS400 and NS630, indicating the number of

ON and OFF cycles. The counter must be installed on the front of the motormechanism

module.