Rockwell Automation 1326 Digital AC Multi-Axis Motion Control System User Manual - Manual (Page 205)

Publication 1394-5.0 — May 2000
Specifications A-7
Figure A.1
Circuit Protection under NEC 1999 110-10 (preferred fully rated devices)
Figure A.2
Circuit Protection under NEC 1999 110-10 (allowed but no longer preferred)
Required Protection
under 110-10 of
NEC 1999
Preferred Fully
Rated Breakers
Fully Rated
Fused
Disconnect
Fully Rated
Breaker
Breakers Selected
for Device
Protection
Fully Rated
Short Circuit
Interupt Capability
Drive Drive Drive
Distribution
Block
Required Protection
under 110-10 of
NEC 1999
Preferred Fully
Rated Breakers
Fully Rated
Fused
Disconnect
Fully Rated
Breaker
Breakers Selected
for Device
Protection
Fully Rated
Short Circuit
Interupt Capability
Required Protection
under 110-10 of
NEC 1999
Allowed But
No Longer Preferred
Traditional
Current Limit
Fused
Disconnect or
Breaker
Rated for
Short Circuit
Available
Limiting to
Short Circuit
Rating of Down
Stream Breaker
Breakers Selected
for Device
Protection
With Limited Short
Circuit Interupt
Capability
Distribution
Block
Required Protection
under 110-10 of
NEC 1999
Allowed But
No Longer Preferred
Breakers Selected
for Device
Protection
With Limited Short
Circuit Interupt
Capability
Drive Drive Drive
Traditional
Current Limit
Fused
Disconnect or
Breaker
Rated for
Short Circuit
Available
Limiting to
Short Circuit
Rating of Down
Stream Breaker