RUEF400 is out of stock and can be placed on backorder.
Available Substitutes:

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Littelfuse Inc.
In Stock: 0
Unit Price: $1.20000
Datasheet

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Littelfuse Inc.
In Stock: 0
Unit Price: $0.99000
Datasheet

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Bourns Inc.
In Stock: 0
Unit Price: $0.59000
Datasheet

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Bel Fuse Inc.
In Stock: 0
Unit Price: $0.52000
Datasheet
Polymeric PTC Resettable Fuse 30V 4 A Ih Through Hole Radial, Disc
Image shown is a representation only. Exact specifications should be obtained from the product data sheet.
Polymeric PTC Resettable Fuse 30V 4 A Ih Through Hole Radial, Disc
Building Automation – Protect/Sense/Control
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RUEF400

DigiKey Part Number
RUEF400HF-ND
Manufacturer
Manufacturer Product Number
RUEF400
Description
PTC RESET FUSE 30V 4A RADIAL
Manufacturer Standard Lead Time
15 Weeks
Customer Reference
Detailed Description
Polymeric PTC Resettable Fuse 30V 4 A Ih Through Hole Radial, Disc
Datasheet
 Datasheet
EDA/CAD Models
RUEF400 Models
Product Attributes
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Category
Time to Trip
12.7 s
Manufacturer
Littelfuse Inc.
Resistance - Initial (Ri) (Min)
10 mOhms
Series
Resistance - Post Trip (R1) (Max)
50 mOhms
Packaging
Bag
Operating Temperature
-40°C ~ 85°C
Part Status
Active
Mounting Type
Through Hole
Type
Polymeric
Package / Case
Radial, Disc
Voltage - Max
30V
Size / Dimension
0.551" L x 0.118" W (14.00mm x 3.00mm)
Current - Hold (Ih) (Max)
4 A
Height - Seated (Max)
0.760" (19.30mm)
Current - Trip (It)
8 A
Lead Spacing
0.199" (5.05mm)
Current - Max
100 A
Approval Agency
CQC, CSA, TUV, UL
Environmental & Export Classifications
Product Questions and Answers
Additional Resources
Substitutes (4)
Part NumberManufacturerQuantity AvailableDigiKey Part NumberUnit PriceSubstitute Type
30R400UFLittelfuse Inc.0F1919-ND$1.20000Similar
30R400UMRLittelfuse Inc.0F1984CT-ND$0.99000Similar
MF-R400Bourns Inc.0MF-R400-ND$0.59000Similar
0ZRB0400FF1ABel Fuse Inc.05923-0ZRB0400FF1A-ND$0.52000Similar
In-Stock: 0
500 estimated in stock on 08-Mar-2027
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All prices are in USD
Bag
QuantityUnit PriceExt Price
1$0.67000$0.67
5$0.55600$2.78
10$0.51300$5.13
50$0.42560$21.28
100$0.39280$39.28
250$0.35308$88.27
500$0.32566$162.83
1,000$0.30026$300.26
5,000$0.25000$1,250.00
Tariff Status: Tariff may apply if shipping to the United States. Estimated tariff costs will be calculated and displayed in the shopping cart to help you assess potential expenses.