0614CT1701

Masterpact MTZ Accessory Design and Installation

Masterpact MTZ Connections

Masterpact MTZ provides three types of basic connections with additional accessories to adapt to different connection needs and simplify installation.

  • Upstream and downstream can have different connection types (mixed connection).

  • Changing between horizontal and vertical rear connection can be done by simply turning the terminal by 90°.

  • Masterpact MTZ circuit breakers can be connected with bare-copper, tinned-copper or tinned-aluminum conductors. No special treatment is required.

Masterpact MTZ and Masterpact NT/NW devices use the same connections, allowing Masterpact MTZ to easily replace Masterpact NT/NW devices.

Masterpact MTZ1 UL Listed/ANSI Certified Connections

Masterpact MTZ1 UL Listed/ANSI Certified 3P/4P Fixed and Drawout Circuit Breakers

Connector Type

Drawout Circuit Breakers

Fixed Circuit Breakers

Front-Connected Flat (FCF)
800 to 1200 A

Rear-Connected “T” Vertical (RCTV)
800 to 1200 A

Rear-Connected “T” Horizontal (RCTH)
800 to 1200 A

Rear-Connected Vertical
1600 A

N/A

Masterpact MTZ1 IEC Rated Connections

Masterpact MTZ1 IEC Rated 3P/4P Fixed and Drawout Circuit Breakers

Connector Type

Drawout Circuit Breakers

Fixed Circuit Breakers

Front-Connected Flat (FCF)
800 to 1600 A

Rear-Connected “T” Horizontal (RCTH)
800 to 1600 A

Rear-Connected “T” Vertical (RCTV)
800 to 1600 A

Masterpact MTZ2/3 UL Listed/ANSI Certified Connections

Masterpact MTZ2 and MTZ3 UL Listed/ANSI Certified 3P/4P Drawout Circuit Breakers (Rear Connections)

Connector Type

Ampere Rating

3P Layout

Front-Connected Flat (FCF)

800 to 2000 A

3200 A (L1)
4000 A

Front-Connected “T” (FCT)

800 to 3000 A

3200 A (L1)
4000 to 5000 A

Masterpact MTZ2/3 IEC Rated Connections

Masterpact MTZ2 and MTZ3 IEC Rated 3P/4P Drawout Circuit Breakers

Connector Type

Ampere Rating

3P Layout

Rear-Connected “T” Vertical (RCTV)

800 to 3200 A

4000 A

5000 A

6300 A

Rear-Connected “T” Horizontal (RCTH)

800 to 3200 A

4000 A

4000b, 5000 A

Front-Connected Flat (FCF)

800 to 3200 A

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