Industrial & Electrical Fuses

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FNA Time-Delay Supplemental Fuses

Bussmann / Eaton FNA Time-Delay Supplemental Fuses are color-coded by maximum voltage rating and offer a pin indicator for visual indication of the open fuse condition. The dual-element, time-delay performance permits close sizing on control transformers and relays. These 250V_AC fuses are 13/32" x 1 1/2" and use a silver-plated pin for positive, electrical signal activation. The 12A and higher versions feature dual-tube construction. Bussmann / Eaton FNA Time-Delay Supplemental Fuses are ideal for power electronic circuits and inductive load circuits.

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Part #

Industrial & Electrical Fuses 250VAC .5A Dual Element Time Delay

FNA-1/2
Bussmann / Eaton
1: S/408.95
10In Stock

Mfr. Part #
FNA-1/2

Mouser Part #
504-FNA-1/2

Bussmann / Eaton

Industrial & Electrical Fuses 250VAC .5A Dual Element Time Delay

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Datasheet

10In Stock

S/408.95

S/377.77

S/313.58

Min.: 1
Mult.: 1

Circuit Protection Fuses

500 mA

125 VAC

Time-Delay Fuses

35 A

Clip

5AG

Bulk

FNA

Industrial & Electrical Fuses 125VAC 3.2A Dual Element Time Delay

FNA-3-2/10
Bussmann / Eaton
1: S/457.56
20In Stock

Mfr. Part #
FNA-3-2/10

Mouser Part #
504-FNA-3-2/10

Bussmann / Eaton

Industrial & Electrical Fuses 125VAC 3.2A Dual Element Time Delay

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Datasheet

20In Stock

S/457.56

Min.: 1
Mult.: 1

Circuit Protection Fuses

3.2 A

125 VAC

Time-Delay Fuses

10 kA

Clip

5AG

Bulk

FNA

Industrial & Electrical Fuses 125VAC 1A Dual Element Time Delay

FNA-1
Bussmann / Eaton
1: S/342.23
1In Stock

Mfr. Part #
FNA-1

Mouser Part #
504-FNA-1

Bussmann / Eaton

Industrial & Electrical Fuses 125VAC 1A Dual Element Time Delay

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Datasheet

1In Stock

S/342.23

S/292.25

S/266.83

S/245.85

S/239.97

Min.: 1
Mult.: 1

Circuit Protection Fuses

1 A

125 VAC

Time-Delay Fuses

10 kA

Clip

5AG

Bulk

FNA

Industrial & Electrical Fuses 125VAC 1.4A Dual Element Time Delay

FNA-1-4/10
Bussmann / Eaton
1: S/492.95
9In Stock

Mfr. Part #
FNA-1-4/10

Mouser Part #
504-FNA-1-4/10

Bussmann / Eaton

Industrial & Electrical Fuses 125VAC 1.4A Dual Element Time Delay

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Datasheet

9In Stock

S/492.95

S/410.81

Min.: 1
Mult.: 1

Circuit Protection Fuses

1.4 A

125 VAC

Time-Delay Fuses

10 kA

Clip

5AG

Bulk

FNA

Industrial & Electrical Fuses 125VAC 20A Dual Element Time Delay

FNA-20
Bussmann / Eaton
1: S/601.24
3In Stock

Mfr. Part #
FNA-20

Mouser Part #
504-FNA-20

Bussmann / Eaton

Industrial & Electrical Fuses 125VAC 20A Dual Element Time Delay

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Datasheet

3In Stock

S/601.24

S/501.04

Min.: 1
Mult.: 1

Circuit Protection Fuses

20 A

125 VAC

Time-Delay Fuses

1 kA

Clip

5AG

Bulk

FNA

Industrial & Electrical Fuses 125VAC 6A Dual Element Time Delay

FNA-6
Bussmann / Eaton
1: S/454.64
5In Stock

Mfr. Part #
FNA-6

Mouser Part #
504-FNA-6

Bussmann / Eaton

Industrial & Electrical Fuses 125VAC 6A Dual Element Time Delay

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Datasheet

5In Stock

S/454.64

S/439.70

Min.: 1
Mult.: 1

Circuit Protection Fuses

6 A

125 VAC

Time-Delay Fuses

10 kA

Clip

5AG

Bulk

FNA

Industrial & Electrical Fuses 125VAC 12A Dual Element Time Delay

FNA-12
Bussmann / Eaton
1: S/494.43
2Expected 3/31/2027

Mfr. Part #
FNA-12

Mouser Part #
504-FNA-012

Bussmann / Eaton

Industrial & Electrical Fuses 125VAC 12A Dual Element Time Delay

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Datasheet

2Expected 3/31/2027

S/494.43

S/478.12

Min.: 1
Mult.: 1

Circuit Protection Fuses

12 A

125 VAC

Time-Delay Fuses

10 kA

Clip

5AG

Bulk

FNA

Industrial & Electrical Fuses 125VAC 6.25A Dual Element Time Delay

FNA-6-1/4
Bussmann / Eaton
1: S/451.57
Non-Stocked Lead-Time 12 Weeks

Mfr. Part #
FNA-6-1/4

Mouser Part #
504-FNA-6-1/4

Bussmann / Eaton

Industrial & Electrical Fuses 125VAC 6.25A Dual Element Time Delay

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Datasheet

Non-Stocked Lead-Time 12 Weeks

S/451.57

S/436.70

Min.: 1
Mult.: 1

Circuit Protection Fuses

6.25 A

125 VAC

Time-Delay Fuses

10 kA

Clip

5AG

Bulk

FNA

Industrial & Electrical Fuses 125VAC 1.5A Dual Element Time Delay

FNA-1-1/2
Bussmann / Eaton
10: S/392.83
Non-Stocked

Mfr. Part #
FNA-1-1/2

Mouser Part #
504-FNA-1-1/2

Bussmann / Eaton

Industrial & Electrical Fuses 125VAC 1.5A Dual Element Time Delay

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Datasheet

Non-Stocked

S/392.83

Min.: 10
Mult.: 10

Circuit Protection Fuses

1.5 A

125 VAC

Time-Delay Fuses

10 kA

Clip

5AG

Bulk

FNA

Industrial & Electrical Fuses 125VAC 1.25A Dual Element Time Delay

FNA-1-1/4
Bussmann / Eaton
10: S/392.83
Non-Stocked

Mfr. Part #
FNA-1-1/4

Mouser Part #
504-FNA-1-1/4

Bussmann / Eaton

Industrial & Electrical Fuses 125VAC 1.25A Dual Element Time Delay

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Datasheet

Non-Stocked

S/392.83

Min.: 10
Mult.: 10

Circuit Protection Fuses

1.25 A

125 VAC

Time-Delay Fuses

10 kA

Clip

5AG

Bulk

FNA

Industrial & Electrical Fuses 125VAC 1.125A Dual Element Time Delay

FNA-1-1/8
Bussmann / Eaton
1: S/374.07
Non-Stocked

Mfr. Part #
FNA-1-1/8

Mouser Part #
504-FNA-1-1/8

Bussmann / Eaton

Industrial & Electrical Fuses 125VAC 1.125A Dual Element Time Delay

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Datasheet

Non-Stocked

S/374.07

S/357.37

Min.: 1
Mult.: 1

Circuit Protection Fuses

1.125 A

125 VAC

Time-Delay Fuses

10 kA

Clip

5AG

Bulk

FNA

Industrial & Electrical Fuses 125VAC 1.6A Dual Element Time Delay

FNA-1-6/10
Bussmann / Eaton
1: S/383.53
Non-Stocked

Mfr. Part #
FNA-1-6/10

Mouser Part #
504-FNA-1-6/10

Bussmann / Eaton

Industrial & Electrical Fuses 125VAC 1.6A Dual Element Time Delay

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Datasheet

Non-Stocked

S/383.53

S/366.40

Min.: 1
Mult.: 1

Circuit Protection Fuses

1.6 A

125 VAC

Time-Delay Fuses

10 kA

Clip

5AG

Bulk

FNA

Industrial & Electrical Fuses 125VAC 1.8A Dual Element Time Delay

FNA-1-8/10
Bussmann / Eaton
10: S/392.83
Non-Stocked

Mfr. Part #
FNA-1-8/10

Mouser Part #
504-FNA-1-8/10

Bussmann / Eaton

Industrial & Electrical Fuses 125VAC 1.8A Dual Element Time Delay

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Datasheet

Non-Stocked

S/392.83

Min.: 10
Mult.: 10

Circuit Protection Fuses

1.8 A

125 VAC

Time-Delay Fuses

10 kA

Clip

5AG

Bulk

FNA

Industrial & Electrical Fuses 250VAC .1A Dual Element Time Delay

FNA-1/10
Bussmann / Eaton
10: S/469.12
Non-Stocked

Mfr. Part #
FNA-1/10

Mouser Part #
504-FNA-1/10

Bussmann / Eaton

Industrial & Electrical Fuses 250VAC .1A Dual Element Time Delay

Learn More

Datasheet

Non-Stocked

S/469.12

Min.: 10
Mult.: 10

Circuit Protection Fuses

100 mA

125 VAC

Time-Delay Fuses

35 A

Clip

5AG

Bulk

FNA

Industrial & Electrical Fuses 250VAC .25A Dual Element Time Delay

FNA-1/4
Bussmann / Eaton
10: S/448.88
Non-Stocked

Mfr. Part #
FNA-1/4

Mouser Part #
504-FNA-1/4

Bussmann / Eaton

Industrial & Electrical Fuses 250VAC .25A Dual Element Time Delay

Learn More

Datasheet

Non-Stocked

S/448.88

Min.: 10
Mult.: 10

Circuit Protection Fuses

250 mA

125 VAC

Time-Delay Fuses

35 A

Clip

5AG

Bulk

FNA

Industrial & Electrical Fuses 125VAC 10A Dual Element Time Delay

FNA-10
Bussmann / Eaton
1: S/409.02
Non-Stocked

Mfr. Part #
FNA-10

Mouser Part #
504-FNA-10

Bussmann / Eaton

Industrial & Electrical Fuses 125VAC 10A Dual Element Time Delay

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Datasheet

Non-Stocked

S/409.02

S/304.12

S/285.44

Min.: 1
Mult.: 1

Circuit Protection Fuses

10 A

125 VAC

Time-Delay Fuses

10 kA

Clip

5AG

Bulk

FNA

Industrial & Electrical Fuses 125VAC 15A Dual Element Time Delay

FNA-15
Bussmann / Eaton
1: S/501.04
Non-Stocked

Mfr. Part #
FNA-15

Mouser Part #
504-FNA-15

Bussmann / Eaton

Industrial & Electrical Fuses 125VAC 15A Dual Element Time Delay

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Datasheet

Non-Stocked

S/501.04

Min.: 1
Mult.: 1

Circuit Protection Fuses

15 A

125 VAC

Time-Delay Fuses

10 kA

Clip

5AG

Bulk

FNA

Industrial & Electrical Fuses 250VAC .15A Dual Element Time Delay

FNA-15/100
Bussmann / Eaton
10: S/448.88
Non-Stocked

Mfr. Part #
FNA-15/100

Mouser Part #
504-FNA-15/100

Bussmann / Eaton

Industrial & Electrical Fuses 250VAC .15A Dual Element Time Delay

Learn More

Datasheet

Non-Stocked

S/448.88

Min.: 10
Mult.: 10

Circuit Protection Fuses

150 mA

125 VAC

Time-Delay Fuses

35 A

Clip

5AG

Bulk

FNA

Industrial & Electrical Fuses 125VAC 2A Dual Element Time Delay

FNA-2
Bussmann / Eaton
1: S/428.80
Non-Stocked

Mfr. Part #
FNA-2

Mouser Part #
504-FNA-2

Bussmann / Eaton

Industrial & Electrical Fuses 125VAC 2A Dual Element Time Delay

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Datasheet

Non-Stocked

S/428.80

S/355.70

S/324.71

S/299.22

Min.: 1
Mult.: 1

Circuit Protection Fuses

2 A

125 VAC

Time-Delay Fuses

10 kA

Clip

5AG

Bulk

FNA

Industrial & Electrical Fuses 125VAC 2.5A Dual Element Time Delay

FNA-2-1/2
Bussmann / Eaton
10: S/439.70
Non-Stocked

Mfr. Part #
FNA-2-1/2

Mouser Part #
504-FNA-2-1/2

Bussmann / Eaton

Industrial & Electrical Fuses 125VAC 2.5A Dual Element Time Delay

Learn More

Datasheet

Non-Stocked

S/439.70

Min.: 10
Mult.: 10

Circuit Protection Fuses

2.5 A

125 VAC

Time-Delay Fuses

10 kA

Clip

5AG

Bulk

FNA

Industrial & Electrical Fuses 125VAC 2.25A Dual Element Time Delay

FNA-2-1/4
Bussmann / Eaton
10: S/413.38
Non-Stocked

Mfr. Part #
FNA-2-1/4

Mouser Part #
504-FNA-2-1/4

Bussmann / Eaton

Industrial & Electrical Fuses 125VAC 2.25A Dual Element Time Delay

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Datasheet

Non-Stocked

S/413.38

Min.: 10
Mult.: 10

Circuit Protection Fuses

2.25 A

125 VAC

Time-Delay Fuses

10 kA

Clip

5AG

Bulk

FNA

Industrial & Electrical Fuses 250VAC .2A Dual Element Time Delay

FNA-2/10
Bussmann / Eaton
10: S/410.81
Non-Stocked

Mfr. Part #
FNA-2/10

Mouser Part #
504-FNA-2/10

Bussmann / Eaton

Industrial & Electrical Fuses 250VAC .2A Dual Element Time Delay

Learn More

Datasheet

Non-Stocked

S/410.81

Min.: 10
Mult.: 10

Circuit Protection Fuses

200 mA

125 VAC

Time-Delay Fuses

35 A

Clip

5AG

Bulk

FNA

Industrial & Electrical Fuses 125VAC 25A Dual Element Time Delay

FNA-25
Bussmann / Eaton
10: S/501.04
Non-Stocked

Mfr. Part #
FNA-25

Mouser Part #
504-FNA-25

Bussmann / Eaton

Industrial & Electrical Fuses 125VAC 25A Dual Element Time Delay

Learn More

Datasheet

Non-Stocked

S/501.04

Min.: 10
Mult.: 10

Circuit Protection Fuses

25 A

125 VAC

Time-Delay Fuses

1 kA

Clip

5AG

Bulk

FNA

Industrial & Electrical Fuses 125VAC 3A Dual Element Time Delay

FNA-3
Bussmann / Eaton
1: S/348.42
Non-Stocked

Mfr. Part #
FNA-3

Mouser Part #
504-FNA-3

Bussmann / Eaton

Industrial & Electrical Fuses 125VAC 3A Dual Element Time Delay

Learn More

Datasheet

Non-Stocked

S/348.42

S/306.77

Min.: 1
Mult.: 1

Circuit Protection Fuses

3 A

125 VAC

Time-Delay Fuses

10 kA

Clip

5AG

Bulk

FNA

Industrial & Electrical Fuses 125VAC 3.5A Dual Element Time Delay

FNA-3-1/2
Bussmann / Eaton
10: S/457.56
Non-Stocked

Mfr. Part #
FNA-3-1/2

Mouser Part #
504-FNA-3-1/2

Bussmann / Eaton

Industrial & Electrical Fuses 125VAC 3.5A Dual Element Time Delay

Learn More

Datasheet

Non-Stocked

S/457.56

Min.: 10
Mult.: 10

Circuit Protection Fuses

3.5 A

125 VAC

Time-Delay Fuses

10 kA

Clip

5AG

Bulk

FNA

FNA Time-Delay Supplemental Fuses

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100 mA
125 mA
150 mA
200 mA
250 mA
300 mA
400 mA
500 mA
600 mA
750 mA
800 mA
1 A
1.125 A
1.25 A
1.4 A
1.5 A
1.6 A
1.8 A
2 A
2.25 A