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Thermal-Magnetic Circuit Protectors

Class 9080-Type GCB


Maximum Current^b	Internal Resistance ¾	Maximum Voltage	Catalog Number^a	Price
0.1	133	250 Vac 65 Vdc	GCB01	$43.70
0.5	6.6		GCB05
0.8	2.55		GCB08
1.0	1.97		GCB10
1.2	1.22		GCB12
1.5	0.86		GCB15
2.0	0.49		GCB20	48.00
2.5	0.31		GCB25
3.0	0.20		GCB30
4.0	0.10		GCB40
5.0	0.08		GCB50
7.0	0.03		GCB70
10.0	<0.02	125 Vac 65 Vdc	GCB100
15.0	<0.02	125 Vac 65 Vdc	GCB150

^aThese 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 cases 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.

^bReplacement adapter is 9080GH64, $1.10 each, standard pack of 10.

Selection:

In order to properly select a Class 9080 Type GCB circuit protector, 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 protected.

4. Multiply the sealed current by the two correction factors and choose the closest circuit protector. Note: Choosing a circuit protector with a value lower than the calculated value might cause nuisance tripping, while choosing the larger might provide a protector that will not properly protect the load.

Example: Solenoid with sealed current of .75 A, an inrush ratio of 1:6 and in an ambient temperature of 85° F.
.75 x 1.5 x 1.05 = 1.18
Choose the 1.2 A protector

Tripping Time:

Tripping time of the circuit protector is determined from Table C at right. Divide the circuit protector value by the temperature correction factor from Table B above to determine actual rated current referenced in Table C.

Table A—Inrush Ratio Correction Table
Note: For resistive loads, use inrush correction factor of 1.0.
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

Note: When several protectors are channel mounted adjacent to each other, the "no trip" current will be 80% of rated current at 70° F.


	File CCN	E152841 QVNU2
	File	UL1077
	File	LR25490

For additional information, reference the NEMA Type Terminal Block Catalog #9080CT9901R5/02.


CP5		Discount Schedule

Thermal-Magnetic Circuit Protector

GB2


Description	Maximum Voltage	Thermal Rating	Catalog Number	Price Each^c
One pole Thermal Magnetic Circuit Protector	300 Vac	0.5 A	GB2CB05	$21.80
		1 A	GB2CB06
		2 A	GB2CB07
		3 A	GB2CB08
		4 A	GB2CB09
		5 A	GB2CB10
		6 A	GB2CB12
		8 A	GB2CB14
		10 A	GB2CB16
		12 A	GB2CB20

^cMust order in multiples of 6.

For markers, use AB1

R and AB1

G markers from page 22-15.


Description	Maximum Voltage	Thermal Rating	Catalog Number	Price Each^c
Two pole Thermal Magnetic Circuit Protector	300 Vac	0.5 A	GB2CD05	$26.20
		1 A	GB2CD06
		2 A	GB2CD07
		3 A	GB2CD08
		4 A	GB2CD09
		5 A	GB2CD10
		6 A	GB2CD12
		8 A	GB2CD14
		10 A	GB2CD16
		12 A	GB2CD20

File
CCN

E164873
QVNU2

File

UL1077

File
Class

LR25490
321501

IEC 157-1
VDE 0660

	File CCN	E164873 QVNU2		File	UL1077		File Class	LR25490 321501	IEC 157-1 VDE 0660

For additional product and information, reference Catalog #9080CT9901R5/02.


I		Discount Schedule

9/8/03

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