MasterPacT MTZ2/MTZ3 Range

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

The MasterPacT MTZ2/MTZ3 range of circuit breakers is made of:

Circuit breakers with MicroLogic X control unit, described in DOCA0101•• MasterPacT MTZ2/MTZ3 – IEC Switch-Disconnectors and Circuit Breakers with MicroLogic X Control Unit From 800 to 6300 A – User Guide.
Circuit breakers with MicroLogic Active control unit described in this guide.

MasterPacT MTZ2/MTZ3 Circuit Breakers with MicroLogic Active Control Unit

The range of MasterPacT MTZ2/MTZ3 circuit breakers with MicroLogic Active control unit offers current ratings from 800 A to 6,300 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 MTZ2/MTZ3 circuit breakers with MicroLogic Active control unit are available:

In the following frame sizes:
- MasterPacT MTZ2 for current ratings from 800 A to 4,000 A
- MasterPacT MTZ3 for current ratings from 4,000 A to 6,300 A
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

MasterPacT MTZ2/MTZ3 circuit breakers with MicroLogic Active control unit are available with the following performance levels:

N1: standard short-circuit level (42 kA) with total selectivity
H1: high short-circuit level (66 kA) with total selectivity
H2: very high short-circuit level (100 kA) with very high selectivity (85 kA)

NOTE: The values above correspond to a 440 Vac network, for higher voltage levels the values can be different. Refer to LVPED225010EN MasterPacT MTZ Catalog.

For full information about available circuit breaker models, interrupting ratings, sensor ratings, and control units, refer to LVPED225010EN MasterPacT MTZ 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:

For MasterPacT MTZ2 N1, the neutral position is on the left side as standard.
For MasterPacT MTZ2 H1 and H2, the neutral position is on the left side as standard. A version with neutral position on the right side is available when ordering.
For MasterPacT MTZ3 H1 and H2, the neutral position is on the left side as standard. A version with neutral position on the right side is available when ordering.