Masterpact MTZ2 / MTZ3 UL Rated/ANSI Certified 800 to 6000 A Circuit Breakers and Switches – User Guide PDF
0614IB1701

Masterpact MTZ2/MTZ3 Drawout Device

Drawout Masterpact MTZ2/MTZ3 Definition

A drawout device is composed of the circuit breaker or switch (the Masterpact device, also called the moving part) and the cradle (or fixed part).

Masterpact MTZ2/MTZ3 Moving Part Description

Standard Masterpact MTZ Circuit Breaker or Switch Description

  1. Carrying grip

  2. Arc chute

  3. Fault-trip reset button

  4. Opening pushbutton

  5. Closing pushbutton

  6. Spring charging handle

  7. Terminal block connectors

  8. Front cover

  9. VBP pushbutton locking cover (optional)

  10. Faceplate label

  11. Spring charged and ready-to-close indicator

  12. Position indicator of main contacts

  13. Window to consult the (optional) CDM mechanical operation counter

  14. Control unit

  15. Control unit transparent cover

Masterpact MTZ Circuit Breaker with ArcBlok™ Technology Description

  1. Carrying grip

  2. Arc chute

  3. Fault-trip reset button

  4. Opening pushbutton

  5. Closing pushbutton

  6. Spring charging handle

  7. Terminal block connectors

  8. Front cover

  9. VBP pushbutton locking cover (optional)

  10. Faceplate label

  11. Spring charged and ready-to-close indicator

  12. Position indicator of main contacts

  13. Window to consult the (optional) CDM mechanical operation counter

  14. Control unit

  15. Control unit transparent cover

  16. ArcBlok Shield

Drawout Masterpact MTZ2/MTZ3 Accessories Description

The following image shows the accessories available for the moving part of a drawout device. For Z1 and Z2, see the following images.

  1. Cradle rejection feature

  2. Terminal block connectors for optional accessories

  3. Terminal block connectors for standard accessories

  4. Four auxiliary switches (OF) or combined connected/closed switches (EF) (optional)

  5. Four auxiliary switches (OF) (standard)

  6. Grounding kit (KMT)

  7. Spring charging motor (MCH)

  8. Mechanical operation counter (CDM)

  9. Standard overcurrent trip switch (SDE1)

  10. Optional overcurrent trip switch (SDE2) or electrical remote reset (RES)

  11. Microswitch

  12. Interlock between racking handle and opening pushbutton (IBPO)

  13. Programmable contacts (M2C)

  14. Isolation module

  15. Undervoltage release (MN) or shunt trip (MX2)

  16. Shunt trip (MX1)

  17. Ready-to-close contact (PF)

  18. Shunt close (XF)

  19. Electrical closing pushbutton (BPFE)

  20. OFF-position locking by padlocks (VCPO)

  21. OFF-position locking by keylocks (VSPO)
 

Masterpact MTZ2/MTZ3 Cradle Description

The following image shows the standard cradle (no optional accessories).

 

  1. Carrying grip

  2. ULP port module

  3. Terminal blocks for standard accessories

  4. Terminal block identification plate

  5. Safety shutter

  6. Rail release tab

  7. Drawout grip

  8. Extension rail

  9. Racking handle storage space

  10. Racking handle

  11. Shutter lock

  12. Moving part position indicator

  13. Racking handle socket

  14. Stop release button

  15. Cradle locking by padlocks

  16. Latch for switching cradle locking from disconnected position to any position (connected, test, disconnected)

Masterpact MTZ2/MTZ3 Cradle Accessories Description

Accessories available for the cradle.

  1. Cradle rejection feature

  2. Terminal blocks for optional accessories

  3. Cord between ULP port module and EIFE interface

  4. Embedded Ethernet interface (EIFE)

  5. Auxiliary terminal shield (CB)

  6. Racking interlock (VPOC)

  7. Shutter position indication and locking (VIVC)

  8. Interlock between racking handle and opening pushbutton (IBPO)

  9. Cradle locking by keylocks (VSPD)

  10. Door interlock (VPEC)

Masterpact MTZ2/MTZ3 Cradle Terminal Block Description

Assignment of the Cradle Terminal Blocks

Block

Marking

Description

Standard or Optional

A

CD1–CD3
CE4–CE6

3 disconnected position contacts (CD) or
3 connected position contacts (CE)

Optional

B

COM

Port module (ILP) or terminal block for the external power supply of the Micrologic X control unit

Standard

UC1

Zone selective interlocking, rectangular sensor for ground-fault protection, or MDGF module input

Optional

UC2

Neutral external sensors, rectangular sensor for ground-fault protection, or MDGF module input

Optional

SDE2/RES

Overcurrent trip switch (SDE2) or electrical remote reset (RES)

Optional

UC4

External voltage connector

Optional

UC3

External voltage connector

Optional

M2C/ESM

Programmable contact (M2C) or ERMS switch module (ESM)

Optional

SDE1

Overcurrent trip switch

Standard

CE1–CE3
CT4–CT6

3 connected position contacts (CE)
or 3 test position contacts (CT)

Optional

C

MN/MX2

Undervoltage release (MN)
or shunt trip (MX2)

Optional

MX1

Shunt trip (MX1)

Optional

XF

Shunt close (XF)

Optional

PF

Ready-to-close contact (PF)

Optional

MCH

Spring charging motor (MCH)

Optional

D
(no EIFE)

OF11–OF24
EF11–EF24

8 auxiliary switches (OF)
or 8 combined connected/closed position auxiliary contacts (EF)

Optional

OF1–OF4

4 auxiliary switches (OF)

Standard

CT1–CT3
CD4–CD6
CE7–CE9

3 test position contacts (CT)
or 3 disconnected position contacts (CD)
or 3 connected position contacts (CE)

Optional

D
(with EIFE)

OF11–OF22
EF11–EF22

6 auxiliary switches (OF)
or 6 combined connected/closed position auxiliary contacts (EF)

Optional

OF1–OF4

4 auxiliary switches (OF)

Standard

EIFE

Embedded Ethernet interface (EIFE)

Optional
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