Safety Switches
Product Description
SAFETY SWITCH
A safety switch is used to open or close an electrical
circuit. Non-fusible safety switches provide a means
to manually connect or disconnect the equipment
from the power source. Fusible safety switches pro-
vide a means to manually open and close a circuit and
overcurrent protection by using customer-installed
fuses. Safety switches are also commonly referred
to as a disconnect switch or simply a disconnect.
DP221NGB Plug Fuse Safety Switch,
30 Amperes, 120/240 Volts
DOUBLE THROW SAFETY SWITCH
A double throw safety switch is sometimes referred to
as a transfer switch. It performs the same function as a
safety switch by opening or closing a circuit; however,
its primary use is to transfer service from a normal
power source to an alternate source (i.e., a residential
generator) or to switch from one load circuit to another.
Features, Functions and Benefits
✓
✓
✓
✓
✓
DT224URK-NPS General-Duty, Non-Fusible Double
Throw Emergency Power Safety Switch, 200
Amperes, 120/240 Volts
DH362UGK Heavy-Duty, Non-Fusible Safety Switch,
60 Amperes, 600 Volts
EATON CORPORATION Cutler-Hammer
6-7
Disconnects
120/240, 240 or 600 volts.
Easy to install.
Ample wiring space.
Padlockable.
UL listed.
DG322URB General-Duty, Non-Fusible Safety Switch,
60 Amperes, 240 Volts
Safety Switches
DG321NRB General-Duty, Cartridge Fuse Safety Switch,
30 Amperes, 120/240 Volts
DP221NGB
DT223URH-N General-Duty, Non-Fusible
Double Throw Emergency Power Safety Switch,
100 Amperes, 120/240 Volts
DT224URK-NPS
DG324NGK
Disconnects
DH362NGK Heavy-Duty, Fusible Safety Switch,
60 Amperes, 600 Volts
DT363URK Heavy-Duty, Non-Fusible Double Throw
Emergency Power Safety Switch, 100 Amperes, 600 Volts
6-8
EATON CORPORATION Cutler-Hammer
Applications
FIGURE 6-3. RESIDENTIAL GENERATOR APPLICATION WITH
MANUALLY OPERATED DOUBLE THROW SAFETY SWITCH
FIGURE 6-2. HOUSEHOLD WORKBENCH APPLICATION
FIGURE 6-4. RESIDENTIAL GENERATOR APPLICATION WITH
AUTOMATIC TRANSFER SWITCH AND SERVICE ENTRANCE RATED
SAFETY SWITCH
Catalog Numbering System
TABLE 6-14. SAFETY SWITCH CATALOG NUMBERING SYSTEM
DG 2 2 1 N R B
Switch Type
Series
Poles/Blades
NEMA Enclosure Ratings
Amperes
DP
= General-Duty/Plug Fuse
DG
= General-Duty/Cartridge Fuse
DH
= Heavy-Duty
DT
= Double Throw
1
2
3
4
=
=
=
=
1-Pole
2-Pole
3-Pole
4-Pole
Voltage
1
= 120 Vac
2
= 240 Vac
6
= 600 Vac
1
=
2
=
3
=
4
=
5
=
6
=
7
=
8
=
30
60
100
200
400
600
800
1200
G
=
R
=
D
=
W
=
NEMA 1
NEMA 3R
NEMA 12
NEMA 4X
Corrosion Resistant
(304 Grade Stainless Steel)
K
= Design (All General-Duty Switches
Above 200 Amperes and All Heavy-Duty
Switches Incorporate K-Series Switch
Design Features Listed Below)
B
= Design General-Duty (30 – 100 Amperes)
H
= General-Duty Double Throw Switch
(Compact Design 30 – 100 Amperes)
Fusible/Non-Fusible
or Neutral
F
= Fusible without Neutral
U
= Non-Fusible
N
= Fusible with Neutral
EATON CORPORATION Cutler-Hammer
6-9
Disconnects
120/240 VAC GENERAL-DUTY, FUSIBLE, SINGLE THROW
TABLE 6-16. 120/240 VAC GENERAL-DUTY, FUSIBLE, SINGLE THROW
Maximum Horsepower Ratings
1-Phase ac
Ampere
Rating
Fuse Type
Provision
120
Volt
240
Volt
3-Phase ac
240
Volt
dc
250
Volt
NEMA 1
Enclosure
Indoor
Catalog
Number
UPC
Code
NEMA 3R
Enclosure
Rainproof
Catalog
Number
UPC
Code
3-Pole 3-Wire (Three Blades, Three Fuses) — 240 Vac
30
60
100
200
400
600
30
60
100
200
400
600
—
—
—
—
H
H
H
H
H
H
H
H
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
1-1/2 – 3
3 – 10
7-1/2 – 15
15
—
—
—
—
—
—
50 – 125
75 – 200
3 – 7-1/2
7-1/2 – 15
15 – 30
25 – 60
50 – 125
75 – 200
—
—
—
—
—
—
—
—
—
—
—
—
DG325FGK
DG326FGK
DG321NGB
DG322NGB
DG323NGB
DG324NGK
DG325NGK
DG326NGK
—
—
—
—
782113589510
782113589572
782113120201
782113144283
782113144344
782113213538
782113639208
782113639222
DG325FRK
DG326FRK
DG321NRB
DG322NRB
DG323NRB
DG324NRK
DG325NRK
DG326NRK
—
—
—
—
782113589527
782113589589
782113120348
782113144290
782113144351
782113213545
782113639215
782113639239
4-Wire (Three Blades, Three Fuses, S/N) — 120/240 Vac
Maximum hp ratings apply only when dual element time delay fuses are used.
Use 4-wire catalog numbers below.
Solid neutral bars are not included. Order separately from
Table 6-27
on
Page 6-18.
120/240 VAC GENERAL-DUTY, NON-FUSIBLE, SINGLE THROW
TABLE 6-17. 120/240 VAC GENERAL-DUTY, NON-FUSIBLE, SINGLE THROW
Maximum Horsepower Ratings
1-Phase ac
Ampere
Rating
120
Volt
240
Volt
3-Phase ac
240
Volt
dc
250
Volt
Catalog
Number
UPC
Code
Catalog
Number
UPC
Code
Non-Fusible — 2-Pole 2-Wire (Two Blades) — 240 Vac
30
60
100
200
30
60
100
200
400
600
2
3
—
—
2
3
—
—
—
—
3
10
15
—
3
10
15
15
—
—
—
—
—
—
7-1/2
15
30
60
125
200
—
—
—
—
—
—
—
—
—
—
DG221UGB
DG222UGB
DG223UGB
782113120102
782114731130
782114731147
—
782113120140
782113144306
782113144368
782113213552
782113589534
782113589596
DG221URB
DG222URB
DG223URB
782113120232
782113144238
782114731154
—
782113120287
782113144313
782113144375
782113213576
782113589541
782113589602
3-Pole 3-Wire (Three Blades) — 240 Vac
DG321UGB
DG322UGB
DG323UGB
DG324UGK
DG325UGK
DG326UGK
DG321URB
DG322URB
DG323URB
DG324URK
DG325URK
DG326URK
WARNING!
Switch is not approved for service entrance unless a neutral kit is installed.
Use 3-wire catalog numbers below.
Drilled to accept field installed neutral kits.
Note:
All general-duty safety switches are individually packaged.
Note:
Accessories are limited in scope on general-duty safety switches. In addition, clear line shields are available as an accessory
on 200 – 600 ampere general-duty switches.
Catalog Numbers: 200 A = 70-7759-11, 400 A = 70-8063-8, 600 A = 70-8064-8.
EATON CORPORATION Cutler-Hammer
6-11
Disconnects
NEMA 1
Enclosure
Indoor
NEMA 3R
Enclosure
Rainproof
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