0614CT1701

Selecting Masterpact MTZ Switches

Selecting Masterpact MTZ1 Switches

Ratings for ANSI C37 Certified Masterpact MTZ1 Non-Automatic Switches

Frame Rating

800 A

Withstand Rating Code

NA

Short-Time Withstand Current Rating (kA)

Vac 50/60 Hz, 0.5 s

42

Breaking Capacity
(with external protection relay) (kA)

254 Vac, 60 Hz

42

508 Vac, 60 Hz

42

635 Vac, 60 Hz

NA

Ratings for IEC 60947-3 Rated Non-Automatic Masterpact MTZ1 Switches

Frame Rating 800/1000 A 1250/1600 A
Withstand Rating Code HA HA
Rated Making Capacity (Peak kA) Icm 220/415 Vac, 50/60 Hz 75 75
440 Vac, 50/60 Hz 75 75
500/690 Vac, 50/60 Hz 75 75
1000 Vac, 50/60 Hz
Short-Time Withstand Current (kA) Icw Vac 50/60 Hz, 0.5 s 36 36
Breaking Capacity
(kA at 690 Vac)
(with external protection relay)
Icu Maximum delay 350 ms 36 36

Selecting Masterpact MTZ2 Switches


Ratings for ANSI C37 Certified Masterpact MTZ2 Non-Automatic Switches

Frame Rating

800 A

1600 A

2000 A

3200 A

4000 A

Withstand Rating Code

HA

HA

HA

HA

HA

Breaking Capacity with External Relay (kA), 50/60 Hz

254 Vac

65

65

65

65

65

508 Vac

65

65

65

65

65

635 Vac

65

65

65

65

65

Short-Time Withstand Current (kA) Vac 50/60 Hz, 0.5 s

65

65

65

65

65

Ratings for IEC 60947-3 Rated Masterpact MTZ2 Non-Automatic Switches

Frame Rating

800/1000/1250/1600 A

2000 A

2500/3200/4000 A

Withstand Rating Code

NA

HA

HA

HA

Rated Making Current
50/60 Hz
(Peak kA)

Icm

220/415 Vac

88

145

145

145

440 Vac

88

145

145

145

500/690 Vac

88

145

145

145

1150 Vac

Short-Time Withstand Current (kA)

Icw

Vac 50/60 Hz, 1 s

42

66

66

66

Ultimate Breaking Capacity (with external protection relay) (kA)

Icu

Maximum Delay
400 ms

42

66

66

66

Selecting Masterpact MTZ3 Switches

Ratings for ANSI C37 Certified Masterpact MTZ3 Non-Automatic Switches

Frame Rating

4000 A

5000/6300 A

Withstand Rating Code

HA

HA

Breaking Capacity with External Relay (kA), 50/60 Hz

254 Vac

85

85

508 Vac

85

85

635 Vac

85

85

Short-Time Withstand Current (kA) Vac 50/60 Hz, 0.5 s

85

85

Ratings for IEC 60947-3 Rated Masterpact MTZ3 Non-Automatic Switches

Frame Rating

4000B/5000/6300 A

Withstand Rating Code

HA

Rated Making Current
(Peak kA)

Icm

220/415 Vac, 50/60 Hz

187

440 Vac, 50/60 Hz

187

500/690 Vac, 50/60 Hz

187

1150 Vac, 50/60 Hz

Short-Time Withstand Current (kA)

Icw

Vac 50/60 Hz, 1 s

85

Ultimate Breaking Capacity
(with external protection relay) (kA)

Icu

Maximum Delay
400 ms

85

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