Full Product Manual

Volume 2—Commercial Distribution CA08100003E—April 2016 www.eaton.com V2-T1-23
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1.1
Switching Devices
Safety Switches
Product Enhancement
Eaton non-fusible safety
switches, per table below,
within the noted ampere
ratings, now carry series
combination short-circuit
ratings as shown when
combined with the identified
MCCB or fuse type. With this
listed rating, the safety
switch shown in the one-line
diagram, can be correctly
applied when the motor
feeder Eaton HMCP circuit
breaker is replaced with an
Eaton molded-case circuit
breaker properly sized for the
motor hp rating. This is a
significant enhancement to
the product’s performance
rating. To achieve these
ratings, the switches have
been tested in combination
with all of the overcurrent
devices shown. Furthermore,
the applicable combination
ratings are marked on the
inside of the switch door,
ensuring inspector approval.
One-Line Diagram
Transformer Fused Switch
Overload Fuse Links, 15.5 kV
125A
S
P
Power Transformer
2500 kVA 12,470/
480V 5.75% Z
Bus Duct–0001
1–#3200, 5 ft
Utility 12,470V
SC 3P 100 MVA
Main Switchgear
Eaton Magnum DS,
DT 520
3000A/3000A
MCC3 FDR
Magnum DS,
DT 520
800A/800A
MCC1 FDR
Magnum DS,
DT 520
800A/800A
Cable–0001
2–#500, 35 ft
MCC1
480V
32.91 kA
MTR FDR
HMCP
MTR O/L
Class 20
Cable–0002
1–#4, 50 ft
Motor Disconnect
480V
13.5 kA
Motor
50 hp
MCC2 FDR
Magnum DS,
DT 520
800A/800A
MTR FDR
HMCP
MTR O/L
Class 20
MTR FDR
HMCP
MTR O/L
Class 20
LV Motor Control Center
LV Switchgear
Main
Switchgear
480V
36.66 kA
Information and Application
The circuit breaker or fuse
rating is not to exceed the
ampere rating of the non-
fusible switch. When used on
systems with greater than
10 kA short-circuit rating
available, the UL Listed short-
circuit rating of the non-
fusible switch is based upon
the switch being used in
combination with fuses or
molded-case circuit breakers
identified in the table below.
Non-Fusible Safety Switches
Notes
1
For use on NEMA 1, 3R, 12/3R and 4X switches.
2
Fuse or circuit breaker rating is not to exceed switch rating.
3
NEMA 12, 4/4X only. NEMA 1, 3R are 100 kAIC at 600 Vac.
Eaton Non-Fusible
Safety Switch
Ampere Rating
1
Maximum
System
Voltage AC
Maximum
Short-Circuit
Rating
Upstream Device
2
Fuse Class Breaker Frame
30 and 60 600 10,000 H, K Any circuit breaker
14,000 FDB
18,000 FD, EGE
25,000 FDC, HFD, HFDE, EGH
200,000 R, T, J, L
100 480 10,000 H, K Any circuit breaker
35,000 EGH, EGS
200,000 R, T, J, L
600 10,000 H, K Any circuit breaker
14,000 FDB
18,000 FD, EGE
25,000 FDC, HFD, HFDE, EGH
200,000
3
R, T, J, L
200 480 10,000 H, K Any circuit breaker
65,000 HFD, HFDE, HJD, JGH
200,000 R, T, J, L
600 10,000 H, K Any circuit breaker
14,000 FDB
18,000 FD, JD, JGE
25,000 FDC, HFD, HFDE, HJD, JGH
200,000 R, T, J, L