7435DB0901 06/2009 Quick Reference Guide …
Quick Reference Guide
7435DB0901 06/2009
Nashville, TN, USA
Protection Sizing for Square D? Brand Low Voltage Transformers
This document lists common circuit breaker sizes for the protection of Square D? brand low voltage transfomers.
Table 1: Three Phase, 150 ?C Rise, TP1, Aluminum Winding, 480V to 208Y/120V, 60Hz
kVA
Transformer Catalog Number
Primary Nameplate
Current
15
EE15T3H
18
30
EE30T3H
36.1
45
EE45T3H
54.2
75
EE75T3H
90.3
Primary Circuit
Breaker
Handle Rating
Frame
ED/EG/EJ
25 A FA
H
ED/EG/EJ
50 A FA
H
ED/EG/EJ
70 A FA
H
125 A ED/EG/EJ
150 A J
112.5
EE112T3H
135.5
175 A J
150
EE150T3H
225
EE225T3H
300
EE300T3H
500
EE500T68H
180.6 271 361.3 602.1
250 A 350 A 500 A 800 A
J, LA LA M, P P
Magnetic Trip Setting
Transformer Primary Lug
Kit
Secondary Nameplate
Current
Secondary Circuit
Breaker
Handle Rating
Frame
Transformer Secondary
Lug Kit
DASKP100
QOB,QOB-VH DASKS100
N/A
DASKP100
41.7
60 A FA
DASKS100
DASKP100
H
DASKS100
DASKP100
QOB, QOB-VH DASKS100
N/A
DASKP100
83.4
100 A Q
DASKS100
DASKP100
H
DASKS100
DASKP100
150 A QOB, QOB-VH DASKS250
N/A
DASKP100
125.1
Q
175 A
DASKP100
J
DASKS100 DASKS250
N/A 8x
DASKP250 DASKP250
208.4
225 A or Q 250 A J
DASKS100 DASKS250
225 A or Q
8x
DASKP250
312.6
250 A J
DASKS100 DASKS250
400 A LA
DASKS400
7x (J), 3x (LA) DASKP400
416.9
600 A M, P
DASKS1000
10x
DASKP400
625.3
800 A M, P
DASKS1000
8x (M), 6x (P) DASKP1000
833.7
1200 A P
DASKS1200
8x
DASKP1000
1389.5
1600 A R
DASKS1200
Table 2: Three Phase, 150 ?C Rise, TP1, Copper Winding, 480V to 208Y/120V, 60Hz
kVA
Transformer Catalog Number
Primary Nameplate
Current
15
EE15T3HCU
18
30
EE30T3HCU
36.1
45
EE45T3HCU
54.2
75
EE75T3HCU
90.3
112.5 EE112T3HCU
150
EE150T3HCU
225
EE225T3HCU
300
EE300T3HCU
500 EE500T68HCU
135.5
180.6 271 361.3 602.1
Primary Circuit
Breaker
Handle Rating
Frame
Magnetic Trip Setting
Transformer Primary Lug
Kit
Secondary Nameplate
Current
Secondary Circuit
Breaker
Handle Rating
Frame
Transformer Secondary
Lug Kit
ED/EG/EJ
DASKP100
QOB,QOB-VH DASKS100
25 A FA
N/A
DASKP100
41.7
60 A FA
DASKS100
H
DASKP100
H
DASKS100
ED/EG/EJ
DASKP100
QOB, QOB-VH DASKS100
50 A FA
N/A
DASKP100
83.4
100 A Q
DASKS100
H
DASKP100
H
DASKS100
ED/EG/EJ
DASKP100
150 A QOB, QOB-VH DASKS250
70 A FA H
N/A
DASKP100
125.1
Q
175 A
DASKP100
J
DASKS100 DASKS250
125 A ED/EG/EJ, H
N/A
150 A J
7x
DASKP250 DASKP250
208.4
225 A or Q 250 A J
DASKS100 DASKS250
250 A J
225 A or Q
10x
DASKP250
312.6
250 A J
DASKS100 DASKS250
400 A LA
DASKS400
300 A LA
10x
DASKP400
416.9
600 A M, P
DASKS1000
350 A LA
10x
DASKP400
625.3
800 A M, P
DASKS1000
500 A M, P
8x (M), 6x (P) DASKP1000
833.7
1200 A P
DASKS1200
800 A P
10x
DASKP1000
1389.5
1600 A R
DASKS1200
? 2009 Schneider Electric All Rights Reserved
Protection Sizing for Square D? Brand Low Voltage Transformers Quick Reference Guide
7435DB0901 06/2009
Table 3: Three Phase, 115 ?C Rise, TP1, Aluminum Winding, 480V to 208Y/120V, 60Hz
kVA
Transformer Catalog Number
Primary Nameplate
Current
15
EE15T3HF
18
30
EE30T3HF
36.1
45
EE45T3HF
75
EE75T3HF
112.5
EE112T3HF
150
EE150T3HF
225
EE225T3HF
300
EE300T3HF
500
EE500T68HF
54.2
90.3
135.5
180.6 271 361.3 602.1
Primary Circuit
Breaker
Handle Rating
Frame
Magnetic Trip Setting
Transformer Secondary
Primary Lug Nameplate
Kit
Current
Secondary Circuit
Breaker
Handle Rating
Frame
Transformer Secondary
Lug Kit
ED/EG/EJ
DASKP100
QOB,QOB-VH DASKS100
25 A FA
N/A
DASKP100
41.7
60 A FA
DASKS100
H
DASKP100
H
DASKS100
ED/EG/EJ
DASKP100
QOB, QOB-VH DASKS100
50 A FA
N/A
DASKP100
83.4
100 A Q
DASKS100
H
DASKP100
H
DASKS100
ED/EG/EJ
DASKP100
150 A QOB, QOB-VH DASKS250
70 A FA H
N/A
DASKP100
125.1
Q
175 A
DASKP100
J
DASKS100 DASKS250
125 A ED/EG/EJ, H
N/A
150 A J
5x
DASKP250 DASKP250
208.4
225 A or Q 250 A J
DASKS100 DASKS250
225 A J
225 A or Q
10x
DASKP250
312.6
250 A J
DASKS100 DASKS250
400 A LA
DASKS400
250 A J, LA
10x
DASKP400
416.9
600 A M, P
DASKS1000
350 A LA
10x
DASKP400
625.3
800 A M, P
DASKS1000
500 A P
6x
DASKP1000
833.7
1200 A P
DASKS1200
800 A P
10x
DASKP1000
1389.5
1600 A R
DASKS1200
Table 4: Three Phase, 80 ?C Rise, TP1, Aluminum Winding, 480V to 208Y/120V, 60Hz
kVA
Transformer Catalog Number
Primary Nameplate
Current
15
EE15T3HB
18
30
EE30T3HB
36.1
45
EE45T3HB
54.2
75
EE75T3HB
90.3
Primary Circuit
Breaker
Handle Rating
Frame
ED/EG/EJ
25 A FA
H
ED/EG/EJ
50 A FA
H
ED/EG/EJ
80 A
--
--
--
--
150 A J
112.5
EE112T3HB
135.5
225 A J
150
EE150T3HB
225
EE225T3HB
300
EE300T3HB
500
EE500T68HB
180.6 271 361.3 602.1
300 A 350 A 500 A 800 A
LA LA M, P P
Magnetic Trip Setting
Transformer Secondary
Primary Lug Nameplate
Kit
Current
Secondary Circuit
Breaker
Handle Rating
Frame
Transformer Secondary
Lug Kit
DASKP100
QOB,QOB-VH DASKS100
N/A
DASKP100
41.7
60 A FA
DASKS100
DASKP100
H
DASKS100
DASKP100
QOB, QOB-VH DASKS100
N/A
DASKP100
83.4
100 A Q
DASKS100
DASKP100
H
DASKS100
DASKP100
150 A QOB, QOB-VH DASKS250
N/A
DASKP100
125.1
Q
175 A
DASKP100
J
DASKS100 DASKS250
-- 9x
DASKP250 DASKP250
208.4
225 A or Q 250 A J
DASKS100 DASKS250
225 A or Q
10x
DASKP250
312.6
250 A J
DASKS100 DASKS250
400 A LA
DASKS400
10x
DASKP400
416.9
600 A M, P
DASKS1000
10x
DASKP400
625.3
800 A M, P
DASKS1000
10x (M), 6x (P) DASKP1000
833.7
1200 A P
DASKS1200
10x
DASKP1000
1389.5
1600 A R
DASKS1200
Schneider Electric - North American Operating Division 1010 Airpark Center Drive Nashville, TN 37217 USA 1-888-SquareD (1-888-778-2733) schneider-electric.us
2
Electrical equipment should be installed, operated, serviced, and maintained only by qualified personnel. No responsibility is assumed by Schneider Electric for any consequences arising out of the use of this material.
? 2009 Schneider Electric All Rights Reserved
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