Specification

Siemens Industry, Inc. SPEEDFAX™ 2017 Product Catalog
3-40
3
MURRAYSafety Switches
General Duty Stand-by Power Panel
GU221
GP321N
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.
Figure 1 Figure 2 Figure 3 Figure 4
a
Starting current of motors above standard horsepower
rating may require use of time delay fuses.
b
Bottom cable entry & exit only.
c
Suitable for service entrance application. Neutral fac-
tory installed. UL1008 listed as a non-automatic transfer
switch under file #E315030. Suitable for use as Transfer
Equipment on optional stand-by systems as defined by
Article 702 of the NEC.
d
Wire ranges (75°C Cu/Al)
Line, load & neutral (1) #14-1
Service ground (1) #14-4
e
Discount Schedule HDSM.
This unique device provides an economical means to transfer from normal to an
alternate source of power. It contains two 100A, 2-pole circuit breakers interlocked
in a “double throw” configuration and supplies both overload and short circuit pro-
tection (10,000 AIC max.). The external handle is padlockable in the OFF position.
N
General Duty Compact Safety Switches
Symbol
Fuse
Type
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.
120V AC 240V AC 240V AC
Std Max
a
Std Max
a
Std Max
a
30 AMP FUSIBLE 1 POLE 2 WIRE S/N 120V AC (INSULATED GROUNDABLE NEUTRAL)
Fig-1 Plug
GP211N
10
33.60
— —
—
—
1
⁄2
2 — — — —
30 AMP FUSIBLE 2 POLE 3 WIRE S/N 240V AC (INSULATED GROUNDABLE NEUTRAL)
Fig-2 Plug
GP321N
10
37.00
— —
—
ECHA
1
⁄2
2
1
1
⁄2
3 — —
Fig-3 None
GU221
10 33.00
GU221AW
5 35.00 ECHA — 2 — 3 — —
60 AMP NON-FUSIBLE 2 POLE 240V AC SPECIAL APPLICATION SWITCH
Fig-4 None — —
—
GU222AW
10
36.00
—
b
— — — 10 — —
Hubs
Conduit
Size
(Inches) Catalog Number
Approx.
Wgt. Lbs.
(Std. Pkg. — 1)
3
⁄4
ECHA075
.10
1
ECHA100
.10
1
1
⁄4
ECHA125
.10
Outdoor TYPE
HubCatalog Number Std. Pkg.
Approx.
Wgt.
Lbs.
100A 2 POLE 3 WIRE S/N 120/240V AC OUTDOOR TYPE 3R
d
DUL313NW
ce
1 19.00 ECHS
Safety Switches
General Duty Compact — 10,000 Amp Withstand Plug Fuse Type 1 & Type 3R
Product Category GDSM