SE Digest 178

MasterPact™ Power Circuit Breakers

MasterPact™ MTZ Circuit Breakers Class 0614 / Refer to Catalog 0614CT1701

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MasterPact MTZ Circuit Breakers

MasterPact MTZ continues the performance and reliability of the MasterPact line. MasterPact MTZ circuit breakers bring innovation and upgradability throughout the entire lifecycle, for improved power uptime, business performance, and cost control. • Customize MicroLogic X control unit anytime • Purchase optional Digital Modules for additional protection, measurement and maintenance & diagnostic • Easy installation using established architectures • Demonstrated compliance with standards • Smartphone connectivity for wireless alerts and maintenance • Built in power meter with Class 1 precision for smart energy metering

MasterPact MTZ2 800–4000A

Table 7.134: MasterPact MTZ1 Circuit Breaker Ratings Standard Frame Rating Interrupting Code ANSI C37 Certified/ UL 1066 Listed 800A

UL 489 Listed

1600A [1]

800A

1200A

L LF [2]

L LF [2]

N1 42 42 — 42 — 40 —

N H L1

N H L1

N H L1

L

240Vac 480Vac 600Vac

50 65 100 200 200 50 65 100 200 200 50 65 100 200 50 50 65 100 100 50 50 65 100 100 50 50 65 100 35 35 10 10 10 35 35 10 10 10 35 35 10 10 40 40 10 10 10 40 40 10 10 10 40 40 10 10 25 25 10 10 10 25 25 10 10 10 25 25 10 10 ————Yes————Yes———— 3550———3550 — — — 35 50 N/AN/A

Interrupting Current (kA RMS) 50/60 Hz

Short-time Withstand Current (kA RMS)

Built-in Instantaneous Override (kA RMS ±10%)

Close and latch rating (kA RMS)

Tested to show the arc flash hazard risk category as referenced by NFPA70E

25–30 ms with no intentional delay

Breaking time Closing time Sensor Rating

25–30 ms with no intentional delay (9 ms for L and LF)

<50ms

—

—

600–1200A

800–1600A

400–800A

400–800A

—

12,500

12,500

12,500

12,500

Mechanical Electrical

Endurance Rating (C/O Cycles) With No Maintenance

2800

2800

2800

2800

Table 7.135: MasterPact MTZ2 and MTZ3 Circuit Breaker Ratings

ANSI C37 Certified/UL 1066 Listed

UL 489 Listed

Standard Frame Rating Interrupting Code

3200/4000 A [3]

800–1600A

2000A

4000/5000 A 800/1200/1600/2000 A 2500/3000 A 4000/5000/ 6000A

LF [2]

L1 [2]

L1F [2]

L1 [2]

L1F [2]

L1 [2]

L1 [2]

H L [2]

H L [2]

N H L [2]

N1 H1 H2 H3

H1 H2 H3

H1 H2 H3

H2 H3

Interrupting Current (kARMS) 50/60Hz 240 Vac 42 65 85 10- 0 200 200 65 85 100 200 200 65 85 100 200 85 100 200 65 100 200 200 100 200 100 200 480 Vac 42 65 85 10- 0 200 200 65 85 100 200 200 65 85 100 200 85 100 200 65 100 150 150 100 150 100 150 600 Vac 42 65 85 85 130 130 65 85 85 130 130 65 85 85 130 85 85 130 50 85 100 100 85 100 85 100 Short-time Withstand Current (kA RMS) 42 65 85 85 30 22 65 85 85 30 22 65 85 85 100 85 85 100 42 65 30 [4] 22 65 65 85 100 Built-in Instantaneous Override (kA RMS ±10%) 35353585 35 24 —— 85 35 24 —— 85 117— — 117 40 40 35 [4] 24 65 65 75 75 Close and latch rating (kARMS) 42 65 40 40 25 22 65 40 40 25 22 65 40 40 40 85 75 40 40 40 25 [5] 22 40 40 40 40 Tested to show arc flash hazard risk category as referenced byNFPA70E —————Yes————Yes——— ——— — — — — Yes — — — — Breaking time 25–30 ms with no intentional delay (9 ms for L1, L1F, L and LF) Closing time 70ms

Sensor Rating (A) 7 MINIATURE AND MOLDED CASE

400–800 600–1200 800–1600 1000–2000 12,500 [6]

2000–4000 2500–5000 3000–6000

2000–4000 2500–5000

1200–2500 1600–3000

400–800 800–1600

1000–2000

1600–3200

Endurance Rating (C/O

12,500

10,000

10,000

5,000

10,000

5,000

Mech.

5k

Cycles) WithNo Mainte nance

CIRCUIT BREAKERS

2800 [6]

1,000

1,000

1,000

1,000

1,000

Elec.

2800

1k

Fixed mounted only. Drawout mounted only.

[1] [2]

[3] 4000 A standard width circuit breaker is not available in L1 interrupting rating code or drawout construction (fixed mounting only). [4] 65 kA RMS for 2000 A. [5] 40 kA RMS for 2000 A. [6] For 2000 A N/H/L/LF devices, the endurance rating is 10,000 for mechanical and 1000 for electric.

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