MasterPacT MTZ1 Range

@TW: this topic is profiled for sharing between MTZ1 with MicAct User Guide and MTZ2/MTZ3 with MicAct User Guide

The MasterPacT MTZ1 range of circuit breakers is made of:

Circuit breakers with MicroLogic X control unit, described in DOCA0100•• MasterPacT MTZ1 - IEC Switch-Disconnectors and Circuit Breakers with MicroLogic X Control Unit - User Guide .
Circuit breakers with MicroLogic Active control unit described in this guide.

MasterPacT MTZ1 Circuit Breakers with MicroLogic Active Control Unit

The range of MasterPacT MTZ1 circuit breakers with MicroLogic Active control unit offers current ratings from 630 A to 1,600 A for AC power systems up to 690 Vac.

NOTE: For AC power systems with IT grounding system, the voltage is limited to 600 Vac.

MasterPacT MTZ1 circuit breakers with MicroLogic Active control unit are available:

In one frame size.
In the following power systems:
- 3-pole (3P)
- 4-pole (4P)
In the following installation types:
- Fixed-mounted circuit breakers
- Drawout circuit breakers

Circuit Breakers

DANGER
HAZARD OF ELECTRIC SHOCK, EXPLOSION, OR ARC FLASH Do not install a MicroLogic Active control unit with version number 004.000.000 in a MasterPacT MTZ circuit breaker with performance level L1 or H3. Failure to follow these instructions will result in death or serious injury.

MasterPacT MTZ1 circuit breakers with MicroLogic Active control unit are available with the following performance levels:

H1: standard short-circuit level (42 kA) with total selectivity
H2: high short-circuit level (50 kA) with high selectivity (42 kA)
H3: very high short-circuit level (66 kA) with very high selectivity (50 kA)
L1: extremely high short-circuit level (150 kA) with strong current limitation and selectivity (10 kA)

NOTE: The values above correspond to a 415 Vac network, for higher voltage levels the values can be different. Refer to LVPED225010EN MasterPacT MTZ with MicroLogic Active Control Unit - Catalog in Related Documents at the beginning of this guide.

For full information about available circuit breaker models, interrupting ratings, sensor ratings, and control units, refer to LVPED225010EN MasterPacT MTZ with MicroLogic Active Control Unit - Catalog.

Circuit breakers are fitted with a MicroLogic Active control unit.

For full information about MicroLogic Active control unit, refer to DOCA0265•• MasterPacT MTZ - MicroLogic Active Control Unit - User Guide.

Neutral Position on 4P Circuit Breakers

On 4P circuit breakers, the neutral is on the left side as standard. A right side neutral version is not available for circuit breakers.