Specification

Corner-Grounded Delta (Grounded B Phase) Systems 2700DB0202R03/12
Devices 09/2012
© 2002–2012 Schneider Electric All Rights Reserved6
ENGLISH
Safety Switches Table 4 lists 2-pole safety switches that are UL Listed for use on 240 and
480 Vac grounded B phase systems. Refer to the Digest, CAD drawings, or
device wiring diagram(s) for complete information.
Molded Case Circuit Breakers Table 5 lists molded case circuit breakers that are UL Listed for 240 Vac
grounded B phase systems.
Table 4: Safety Switches
Safety Switches Ampere Rating System Voltage (VAC) Type Construction NEMA Types Short Circuit Rating
General Duty
30 120
Neutral installed
e.g., D223N
1, 3R
10,000 A
240
10,000 A when used in conjunction with
Class H or K fuses. 100,000 A when used
in conjunction with Class R, J, or T fuses.
60
100
200
Heavy Duty
30
240
or
480
2- or 3-pole
neutral installed
e.g., H223N
1, 3R, 4, 4X, 5,
12, 12K
10,000 A when used in conjunction with
Class H or K fuses. 200,000 A when used
in conjunction with Class R, J, or T fuses.
60
100
200
1
400
600
1
200 A switch is limited to 100,000 A short circuit current rating when used with Class R, J, or T fuses.
Table 5: 240 Vac UL Listed Grounded B Phase Interrupting Ratings
Catalog
Number Prefix
No. of
Poles
Ampere Rating
UL Listed 240 Vac Grounded
B Phase RMS Sym. Amperes
Footnotes
QO-H, QOB-H
2
15–100 5,000
QB, QD, QG, QJ 100–225 10,000
1
1
Standard labeling includes grounded B phase.
EDB, EGB, EJB 15–125 18,000 / 35,000 / 65,000
1
HD, HG, HJ, HL 15–150
42,000 / 42,000 / 65,000 / 100,000
1, 2
2
3.0, 5.0, 3.0A, 5.0A, 6.0A, 5.0P, 6.0P, 5.0H, and 6.0H Micrologic trip system.
JD, JG, JJ, JL 150–250
1, 2, 3
3
Manufactured using 3-pole module.
FH, FHL 15–100 42,000
1, 4
4
Add suffix 5861 to the catalog number for grounded B phase labeling.
LH, LHL 125–400 30,000
3, 4
MG, MJ 300–800
65,000
3, 5
5
ET1.01 electronic trip system.
PG, PJ, PK, PL 600–1200
2, 3, 5
RG, RK, RJ, RL 1200-2500 35,000 / 65,000 / 100,000 / 125,000
2, 3, 5