
6
NEMA Type Terminal Blocks
Supplementary Protectors
One Pole Thermal-Magnetic Control Circuit Protectors
Single Pole Type GCB Circuit Protector Blocks
The 9080GCB... have solderless box lugs.
They accept 1 #10 -16 Cu AWG wire.
Technical Data:
Dielectric Strength 1500 Vac
Insulation Resistance 100 M
Ω
Weight approx. 2.2 oz.
Terminals: Box lug type
Recommended tightening torque 8-10 lbf-in (0.9 - 1.1 N-m)
Approvals File E152841
CCN QVNU2
File LR25490
FINGERSAFE
®
per DIN 57470 YES
Type GCB Circuit Protector Application Data
Technical Data:
Maximum voltage rating
250VAC/65VDC (GCB01 through 70)
125VAC/65VDC (GCB100 and 150)
Maximum interrupting rating 200 Amperes, but
not exceeding 10,000% (100 times) rated current
Selection:
In order to properly select a Class 9080 Type GCB circuit pro-
tector, follow the following steps:
1. Determine the inrush correction factor from Table A at
right.
2. Determine the temperature correction factor from Table B
at right.
3. Determine the sealed current of the load that is being pro-
tected.
4. Multiply the sealed current by the two correction factors
and choose the closest circuit protector.
Note:
Choosing a circuit protector with a value lo wer than the
calculated value might cause nuisance tripping, while choos-
ing the larger might provide a protector that will not properly
protect the load.
(D) (C)
(A)
(E)
(B)
A. Thermal-Magnetic circuit protector
B. 14 different stock current ratings – 0.1 to 15 Amp
C. On - Off switch
D. Visible trip indication
E. Mounts on Class 9080 Type GH track and on DIN
mounting track
Example:
Solenoid with sealed current of .75 Amps, an inrush
ratio of 1:6 and in an ambient temperature of 85˚F.
0.75 x 1.5 x 1.05 = 1.18
Choose the 1.2 Amp protector
The 9080GCB... circuit protectors come standard with the trac k
adapter f or mounting on 9080GH track (replacement adapter is
9080GH64). Removal of this adapter permits mounting on
9080MH2xx, MH3xx, and AM1 track. See page 8 for complete
listing of available tracks. Use the 9080MH62 (see page 9)
mounting adapter for the 9080MH1xx DIN 1 track.
♦
These maximum current values assume the use of insulated copper conductors with 75
°
C
temperature rating, and are calculated based on NEC Article 310, Table 310-16. In most cas-
es this value is the maximum ampacity of that wire or combination of wires (as listed in the
above table) which has the greatest current carrying capacity. The actual allowable current
for a particular application is dependent upon the number, size, insulation class and other
characteristics of the wires used.
T ripping Time:
Tripping time of the circuit protector is determined from Table C
below. Divide the circuit protector value by the temper ature cor-
rection f actor from Table B abov e to determine actual rated cur-
rent referenced in Table C.
Note:
When se veral protectors are channel mounted adjacent
to each other, the “no tr ip” current will be 80% of rated current
at 70
°
F.
Maximum
Current
♦
Internal
Resistance
Ω
Maximum
Voltage Single Pole Type
0.1
0.5
0.8
1.0
1.2
1.5
133
6.6
2.55
1.97
1.22
.86
.49
.31
.20
.10
.08
.03
250VAC
65VDC
GCB01
GCB05
GCB08
GCB10
GCB12
GCB15
2.0
2.5
3.0
4.0
5.0
7.0
GCB20
GCB25
GCB30
GCB40
GCB50
GCB70
10.0
15.0 <0.02
<0.02 125VAC
65VDC GCB100
GCB150
Table A
Inrush Ration Correction Table
Inrush Ratio 1:1 to 1:4 1:5 1:6 1:7 1:8
Factor 1.3 1.4 1.5 1.6 1.7
Table B
Ambient Temperature Correction Table
Ambient
Temperature 70˚F
(21.1˚C) 100˚F
(37.8˚C) 120˚F
(48.9˚C) 140˚F
(60˚C) 160˚F
(71.1˚C) 180˚F
(82.2˚C) 200˚F
(93.3˚C)
Factor 1.0 1.1 1.2 1.3 1.4 1.5 1.6
Table C
Tripping times in seconds at 70
°
F (21.1
°
C)
Percent rated
current 100% 200% 300% 400% 500% 600% 1000% 2000% and
greater
Tripping Time
(seconds) no trip 10-40 38 1.5-9 .8-6 .003-4 .003-2 Max. .02