Toshiba XT JK Series Brochure & Specs page 10

5. Ratings
5.1 Controller shall be rated as follows:
5.1.1 Interrupting Ratings:
400 Ampere Controller:
- contactor
- fused controller
5.1.2 Continuous Thermal Ratings:
400 Ampere Controller:
Enclosure type
NEMA-1 Ventilated
NEMA-1 Non-ventilated
NEMA-12/3R
5.1.3 Short Time Thermal Rating:
400 Ampere Contactor: 2400A for 30 seconds
5.1.4 Impulse Withstand:
400 Ampere Controller: 60kV
Rev. 2, 2/16/1999
7.0kA @ 6.9kV
50kA RMS Sym. @ 7.2kV
200MVA @ 2.3kV
350MVA @ 4.0kV
400MVA @ 4.6kV
570MVA @ 6.6kV
Max. Continuous
Amperes
46" and 61" One-high
controller
360
320
310
6000A for 1 second
1.2 x 50 microsecond wave
Max. Continuous
Amperes
90" One-high controller or
Lower controller in a Two-
high stacking
arrangement
360
320
310
Max. Continuous
Amperes
Upper controller in a
Two-high stacking
arrangement
320
280
280