M-PACT accessories
A wide range of optional accessories have been developed that are compatible with all M-PACT air circuit breakers, regardless of nominal rating or frame size. Each one incorporates 'easy-fit' design features for quick installation,
either in the factory or by the user on site.
Motorised spring charging unit
The unique motor/gearbox unit is specially designed to operate with the full range of M-PACT breakers .It is easily fitted with just two bolts. In the event of circuit breaker closure, this unit will automatically recharge the spring in readiness for instant re closure should the need arise. High speed recharging ensures that the springs are fully charged within approximately three seconds following a release. As an optional feature, a "springs charged" contact is available for the motor unit.
Circuit breaker closing coil
The closing coil is an easy-to-fit, clip-on unit, with simple plug-in connectors. This permits either local or remote release of the spring charged closing mechanism by electrical operation. An additional anti-pumping safety feature also ensures that the electrical closing signal must be released before further closure is attempted, and a cut-off is instigated should a closing signal be maintained. Because each coil operates within a wide voltage range, the number of individually rated coils required is drastically reduced.
Shunt trip
Energisation , locally or remote, will instantaneously activate the circuit breaker mechanism, ensuring rapid disconnection of the main contacts. In addition, a series connected auxiliary switch ensures automatic isolation whenever the circuit breaker is open. Shunt trip releases also have a wide operational voltage range, and they include the same easy-fit, clip-on/plug-in connectors as the closing coil above.
Undervoltage release
Instantaneously releases the circuit breaker trip mechanism should the supply voltage dip below the pre -set value. Simple to install, these devices have the same easy-fit features as previously described. Note: This is a 'no-volt/ no-close device. The circuit breaker cannot be closed (manually or electrically) unless the under voltage release coil is energised. Time delay under voltage release similar to the above, but this electronic device prevents nuisance tripping of the circuit breaker if circuit interruption is not desirable when supply voltage drop is only transient. Fixed time delay 3 sec ±1sec.
State-of-the-Art Electronic Trip Units
•• A line offering a new range of electronic trip units designed to extend and/or upgrade the
Functionality offered by the existing M-PACT Plus Air Circuit Breaker.
•• Two types are available. The simple and effective MPRO-27 and the MPRO-50 offering extended functionality .
•• Each has a LCD screen with ammeter and a menu driven setting interface, allowing a simple and accurate setting of all parameters.
•• This global line of electronic trip units uses the most recent technology to offer each user an unique combination of selectivity speed and functionality.
Plug'n Play
Electronic trip units are normally supplied factory fitted. However spares are available that can be simply plugged in to breakers installed in the field. Each trip unit then needs to be adjusted to the required settings. If the installation is not powered up the installed battery pack or the separately available test kit with Power Pack can be used as alternate power source.
MPRO-27 & MPRO-50
The basic MPRO-27 type has been designed to replace the existingMPRO-17 and MPRO-18 plus units offering an extended functionality and a standard ammeter. The MPRO-50 type replaces the existing MPRO-30 and MPRO-40 designs covering an extended functionality with protection devices as fuse links, overload protection and reduced instantaneous (RELT). Each MPRO-50comes with a simple to connect 4 wire modbus communication option.
Withdrawable Circuit Breaker
•• Insulated, earthed steel shutters to isolate the main
contact zone
•• Front access padlocking for safety shutters
•• Secure padlocking in the "Disconnect" position
•• Clearly visible operational position indication
•• Carriage position switch (optional)
•• Termination: Flat copper palms (standard) with captive M10
fixing nuts
•• 'T' terminal adaptors for horizontal/vertical connection
(optional)
•• Front access connections (optional)
•• Automatic disconnect of secondary circuits
•• Lifting lugs for ease of removing the circuit breaker from
the cassette
•• Front access of secondary terminals for simple connection
•• Cassette side mounting fixing parts (optional)
Fixed Circuit Breaker
All M-PACT fixed 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 IEC60947-2
- Front access of secondary terminals for simple connection
IT Companies
Any large IT company with building management systems requires integration of protection systems. Microprocessor based Mpro Protection Releases enables remote monitoring and controlling of the facility.
Space & Defence
Space & Defence institutions have complex and expensive machinery; International
Certifications from ASTA, LOVAG & KEMA ensures ruggedness & reliability of the ACB thus avoiding life threatening and financial disasters.
Hospitals
In a hospital, life saving equipments run on electricity and any kind of interruption is unacceptable; PAMM helps to eliminate the downtime of the electrical system in such critical environment. It stores all the settings and transfers them to the breaker when required.
Industries
Electric shut downs in any industry implies huge production losses; Front Mounted Accessories renders ease of maintenance empowering industries to focus on productivity and efficiency.
Shopping Malls
With thousands of people streaming into the malls everyday, electrical faults of any kind are totally intolerable. Safety Interlocks avoid accidents thus protecting life and property.
