ETC Unison DRd Dimming Rack Enclosure - Manual (Page 10)

6 DRd Enclosure Installation Manual
Maximum Current Draw
Short Circuit Current Rating (SCCR)
Type Phase Type
Maximum
Current Draw
Suggested
Breaker
Rating
DRd6
Single Phase (1Ø) 120A 150A
Three Phase (3Ø) 80A 100A
AX6
Single Phase (1Ø) 120A
1
150A
3
Three Phase (3Ø) 80A 1 100A 3
DRd12
Single Phase (1Ø) 240A 300A
Three Phase (3Ø) 160A 200A
AX12
Single Phase (1Ø) 240A
1
300A
3
Three Phase (3Ø) 160A 1 200A 3
AX12X
Single Phase (1Ø) 480A
2
400A
4
Three Phase (3Ø) 320A 2 400A 3
N o t e : 1
Connected to DRd enclosure with a full complement of 20A modules.
2
Connected to two DRd enclosures with a full complement of 20A modules.
3
Installed in a main circuit breaker model auxiliary enclosure.
4
Wire bending space limits the feed to the AX12X-MCB to 400A maximum. ETC
installs a 100% rated two pole breaker (or two poles from a three pole breaker) in
the AX12X-MCB, for a total deliverable current of 400A in a single phase (split
phase) configuration.
Configuration
SCCR at
100-120v
Ac
SCCR at
240 &
277v Ac
DRd6 22,000A 22,000A
DRd6 with AX6 (MCB) 100,000A 65,000A
DRd12 22,000A 22,000A
DRd12 with AX12 Main Lug 22,000A 22,000A
DRd12 with AX12X (cross-bussed) Main Lug 22,000A 22,000A
DRd12 with AX12 Main Circuit breaker 100,000A 65,000A
DRd12 with AX12X Main Circuit breaker 100,000A 65,000A