Specification

Siemens Industry, Inc. SPEEDFAX™ 2017 Product Catalog
3-41
3
MURRAY
Safety Switches
GUN322 GHN321N GHN423NW
Figure 1 Figure 2 Figure 3
a
“G“ Series switches are UL Listed for use on circuits
capable of delivering up to 100,000 Amps RMS sym-
metrical fault currents, provided Class “R“ or “T“
fuses and appropriate rejection or adapter kits are
installed. T-fuses can only be used on 100–200 Amp.
100–200A switches can also be used with Class J fuses.
b
Starting current of motors above standard horsepower
rating may require use of time delay fuses.
c
These switches are UL Listed for application on ground-
ed B systems.
d
Suitable for 3-pole motor loads.
e
Has service entrance label, neutral factory installed.
Accessories and Lug Data —
See pages 3-47 and 3-48.
Dimensions —
See pages 3-49, 3-50 and 3-51.
Knockout Drawings —
See page 3-52 and 3-53.
Switch Selection with Class “H“ Fuse Holders 30–600 Amps
(Convertible to Class “R“)
a
Symbol Amps
Indoor TYPE 1 Outdoor TYPE 3R
Hub
Horsepower Rating
Single Phase Three Phase
Catalog Number
Std.
Pkg.
Approx.
Wgt. Lbs. Catalog Number
Std.
Pkg.
Approx.
Wgt. Lbs.
240V AC 240V AC 250V DC
Std Max
b
Std Max
b
Std
FUSIBLE 2 POLE 3 WIRE S/N 240V AC (INSULATED GROUNDABLE NEUTRAL)
c
de
Fig-1
30
GHN321N
c
10
35.00
GHN321NW
c
10
35.00
ECHA
1
1
⁄2
3 3
7
1
⁄2
5
60
GHN322N
c
1
14.00
GHN322NW
c
1
14.00
ECHS 3 10
7
1
⁄2
15 10
100
GHN323N
c
1
23.00
GHN323NW
c
1
24.00
ECHS
7
1
⁄2
15 15 30 20
200
GHN324N
c
1
47.00
GHN324NW
c
1
48.00
ECHS
15 — 25 60 40
FUSIBLE 3 POLE 4 WIRE S/N 240V AC (INSULATED GROUNDABLE NEUTRAL)
e
Fig-2
30
GHN421N
5
24.00
GHN421NW
5
24.00
ECHA
1
1
⁄2
3 3
7
1
⁄2
5
60
GHN422N
1
15.00
GHN422NW
1
15.00
ECHS 3 10
7
1
⁄2
15 10
100
GHN423N
1
25.00
GHN423NW
1
25.00
ECHS
7
1
⁄2
15 15 30 20
200
GHN424N
1
49.00
GHN424NW
1
50.00
ECHS
15 — 25 60 40
NON-FUSIBLE 3 POLE 240V AC (SEE PREVIOUS PAGE FOR 2 POLE, 30 AMPS;
USE 3 POLE FOR 2 POLE APPLICATION FOR 60–200 AMPS)
Fig-3
30
GUN321
5
24.00
GUN321AW
5
24.00
ECHA — 3 —
7
1
⁄2
5
60
GUN322
1
12.00
GUN322AW
1
13.00
ECHS
— 10 — 15 10
100
GUN323
1
23.00
GUN323AW
1
24.00
ECHS
— 15 — 30 20
200
GUN324
1
46.00
GUN324AW
1
47.00
ECHS
— 15 — 60 40
Safety Switches
General Duty — 30–200 Amp, 10,000 & 100,000 Amp Withstand Cartridge Fuse Type 1 & Type 3R
Product Category HDSM