Square D Digest 179

Insulated Case Circuit Breakers

Selection Information

Class 600, 800

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MasterPacT MTZ Molded Case Circuit Breakers

MasterPacT MTZ1 800–1600A

MasterPacT MTZ2 800–6000A

MasterPacT MTZ3 4000–6000 A

MTZ1-LF [55]

MTZ2-LF [55]

Circuit Breaker Type Number of Poles Current Range Interrupting Ratings UL/CSA Rating

MTZ1-N MTZ1-H MTZ1-L1 MTZ1-L

MTZ2-N MTZ2-H MTZ2-L

MTZ2-H MTZ2-L MTZ3-H MTZ3-L

3 , 4 400– 1200

3, 4

3, 4 400– 2000

3, 4

3 , 4

3 , 4

3

3

3

3

3

3

3

1200– 3000

1200– 3000

400– 1200

400– 1200

400– 1200

400– 1200

400– 2000

400– 2000

400– 2000

2000– 6000

2000– 6000

240Vac

50 50 50 35 35

65 50 50 50 50

100

200 100 100

200 100 100

65 65 65

100 100 100

200 150 150 100 100

200 150 150 100 100

100 100 100

200 150 150 100 100

100 100 100

200 150 150 100 100

480Y/277 Vac

65 65

480Vac

(kARMS) (50/60Hz)

600Y/347 Vac

— — — 50 — — — 50

85 85

85 85

85 85

600Vac 250Vdc 500Vdc 240Vac 415Vac

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DCRatings

IEC [56] (kA RMS) Icu/ Ics Special Ratings CCC

Fed. Specs W-C-375B/GEN

HACR (2P, 3P)

Connections/Terminations UnitMount

X

X

X

X

X

X

X

X

X

X

X

X

X

I-Line™

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Rear Connection

X X

X X

X X

X X

X X

X X

X X

X X

X X

X X

X X

X X

X X

Drawout

Optional Lugs

—————————————

Accessories and Modifications Shunt Trip

X X X X X X X X

X X X X X X X X

X X X X X X X X

X X X X X X X X

X X X X X X X X

X X X X X X X X

X X X X X X X X

X X X X X X X X

X X X X X X X X

X X X X X X X X

X X X X X X X X

X X X X X X X X

X X X X X X X X

Undervoltage Trip Auxiliary Switches Alarm Switch Motor Operator Handle Operators

—————————————

Mechanical Interlocks Padlock Attachment Optional GF Protection

Trip System Type

Thermal-magnetic

————————————— —————————————

Instantaneous-only (MCP)

Electronic

X

X

X

X

X

X

X

X

X

X

X

X

X

Product Dimensions Dimensions (3P Drawout) in. (mm)

Height Width Depth

12.67 (322) 11.25 (286) 13.54 (344)

17.28 (439) 17.74 (450) 18.50 (470)

17.28 (439) 17.74 (450) 18.50 (470)

17.28 (439) 30.94 (786) 18.50 (470)

Enclosures

General Purpose (NEMA 1)

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Raintight (NEMA 3R) Dust-tight (NEMA 12)

Watertight (NEMA 4, 4X, 5) Explosion Proof (NEMA 7, 9)

Pages

MasterPacT™ Power Circuit Breakers, page 7-70 and Catalog 0614CT1701

NOTE: All circuit breakers on this chart are certified to UL and CSA standards unless otherwise noted.

CIRCUIT BREAKERS

7 MINIATURE AND MOLDED CASE

[55] Tested to show arc flash hazard risk category as reference by NFPA70E. [56] See Catalog 0614CT1701 for additional ratings and other information.

7-9

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