53WL Circuit Breaker Selection and Application Guide
WL Power Circuit Breaker Cradles
UL 1066 Listed Cradle Catalog Number
Type of secondary terminal connection
1
For Breakers:
Screw clamp terminals P
Spring clamp terminals T
Ring terminals R
Screw clamp terminals (low profile, non-partable design) K
For Switch (Non-automatic):
Screw clamp terminals D
Spring clamp terminals E
Ring terminals F
Screw clamp terminals, non-partable design) M
Truck Operated Contacts (TOC)
Breaker position switches in the following configurations:
None X
(1) Connected, (1) Test, (1) Disconnected - all Form C 1
(3) Connected, (2) Test, (1) Disconnected - all Form C 3
(6) Connected - all Form C 6
Cradle mounted key locks
2
None X
Lock breaker in OPEN position (Kirk key) A
Lock breaker in OPEN position (Superior key) B
Double lock breaker in OPEN position (Kirk key) C
Double lock breaker in OPEN position (Superior key) D
Provision only - Lock breaker in OPEN position E
Provision only - Double lock breaker in OPEN position F
Primary conductor isolation shutter
None X
Isolation Shutters F
Cradle catalog number
G 2 3 4 5 6 7 8 9 10 11 12 13 14 15
Class Interrupt rating (kA) Frame Frame size
240VAC Max ampere
480VAC 600VAC rating (A) 2 3
N 50 50 800 X N 2 3 0 8
N 50 50 1600 X N 2 3 1 6
S 65 65 800 X S 2 3 0 8
S 65 65 1600 X S 2 3 1 6
S 65 65 2000 X S 2 3 2 0
S 65 65 3200 X S 2 3 3 2
H 85 65 800 X H 2 3 0 8
H 85 65 1600 X H 2 3 1 6
H 85 65 2000 X H 2 3 2 0
H 85 65 3200 X H 2 3 3 2
H 85 85 4000 X H 3 3 4 0
H 85 85 5000 X H 3 3 5 0
L 100 85 800 X L 2 3 0 8
L 100 85 1600 X L 2 3 1 6
L 100 85 2000 X L 2 3 2 0
L 100 85 3200 X L 2 3 3 2
L 100 85 4000 X L 3 3 4 0
L 100 85 5000 X L 3 3 5 0
M 150 85 3200 X M 3 3 3 2
M 150 85 4000 X M 3 3 4 0
M 150 85 5000 X M 3 3 5 0
F 200 200 800 X F 2 3 0 8
F 200 200 1600 X F 2 3 1 6
F 200 200 2000 X F 2 3 2 0
F 200 200 3200 X F 2 3 3 2
F 200 200 4000 X F 3 3 4 0
F 200 200 5000 X F 3 3 5 0
Interrupting rating, frame size and frame rating
1
Terminal blocks (X5, X6, X8, X9) are installed as standard.
2
Fused Frame Size 3 circuit breakers include a two cylinder provision as standard, with the second position pre-populated with a key-interlock to prevent racking
(in or out) of the separately-mounted fuse carriage while the associated fused circuit breaker is closed.
Courtesy of NationalSwitchgear.com
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