Technical Data 2051
Effective June 2017
Supersedes March 2011
Product features
•Specify packaging, product and option code
•Ratings above 6.3 A have a 0.8 mm diameter lead
•With TR2 packaging code, lead wire length is 19.05 mm
Ordering information
•cURus: File E19180, Guide JDYX2, JDYX8
•CSA Component Acceptance: File 53787
•SEMKO Approval: File 413779
•VDE Approval: File 40015517
•IMQ Approval: File EB405
•CCC Approval: File 2005010207155691
•BSI Approval: File KM55676
•Fast-acting high breaking capacity
•Optional axial leads available
•5 mm x 20 mm physical size
•Ceramic tube with silver-plated (50 mA-400 mA) and
nickel-plated (500 mA-10 A) endcaps.
•Designed to IEC 60127-2 Electrical Characteristics
1.5 In2.1 In2.75 In4 In10 In
Inmin max min max min max max
50mA-4A 60 min 30 min 10 ms 2 sec 3 ms 300 ms 20 ms
5A-6.3A 60 min 30 min 10 ms 3 sec 3 ms 300 ms 20 ms
8A-10A 30 min 30 min 40 ms 20 sec 10 ms 1s 30 ms
Specifications
Voltage Interrupting Rating at
Rated Voltage (50Hz)
Typical DC Typical Typical Agency Approvals
Product Rating Cold Resistance Melting I 2t Voltage IMQ VDE BSI SEMKO cURus CCC MITI/ CSA
Code Vac Vac (amps) Drop (mV)† JET
S501-50-R 250 1500 157.5 0.0017 9000 X X X X X X X
S501-63-R 250 1500 39.0 0.0005 3300 X X X
S501-80-R 250 1500 27.9 0.0011 2600 X X
S501-100-R 250 1500 20.0 0.0018 2300 X X
S501-125-R 250 1500 12.3 0.0037 1900 X X
S501-160-R 250 1500 8.5 0.008 1600 X X X X X X X
S501-200-R 250 1500 6.0 0.02 1350 X X X X X X X
S501-250-R 250 1500 4.4 0.027 1300 X X X X X X X
S501-315-R 250 1500 3.3 0.01 1400 X X X X X X X
S501-400-R 250 1500 2.2 0.018 1200 X X
S501-500-R 250 1500 0.460 0.038 1050 X X X X X X X
S501-630-R 250 1500 0.340 0.064 1200 X X
S501-800-R 250 1500 0.245 0.097 490 X X X X X X X
S501-1-R 250 1500 0.231 0.146** 330 X X X X X
S501-1.25-R 250 1500 0.176 0.313** 297 X X X X
S501-1.6-R 250 1500 0.113 0.748** 239 X X X X X
S501-2-R 250 1500 0.073 2.0 205 X X X X X X X X‡
S501-2.5-R 250 1500 0.053 3.9 190 X X X X X X X X‡
S501-3.15-R 250 1500 0.037 8.1 160 X X X X X X X X‡
S501-4-R 250 1500 0.027 14 160 X X X X X X X X‡
S501-5-R 250 1500 0.019 25 155 X X X X X X X X‡
S501-6.3-R 250 1500 0.014 48 150 X X X X X X X
S501-8-R 250 1500 0.009 104 102 X X X X X X
S501-10-R 250 1500 0.008 155 111 X X X X X X
* DC Cold Resistance (measured at <10% of rated current)
** I2t of 1A, 1.25A & 1.6A is measured at 10I nDC
† Typical Voltage Drop (voltage drop was measured at 20°C ambient temperature at rated current)
‡ CSA approvals on these ratings will not be marked on the fuse cap
(Ω)*
S501
5 mm x 20 mm Fast-acting ceramic tube fuses
Agency information
Eaton
Electronics Division
1000 Eaton Boulevard
Cleveland, OH 44122
United States
www.eaton.com/electronics
© 2017 Eaton
All Rights Reserved
Printed in USA
Publication No. 2051 BU-SB11296
June 2017
Eaton is a registered trademark.
All other trademarks are property
of their respective owners.
Life Support Policy: Eaton does not authorize the use of any of its products for use in life support devices or systems without the express written
approval of an officer of the Company. Life support systems are devices which support or sustain life, and whose failure to perform, when properly
used in accordance with instructions for use provided in the labeling, can be reasonably expected to result in significant injury to the user.
Eaton reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Eaton also
reserves the right to change or update, without notice, any technical information contained in this bulletin.
S501
5 mm x 20 mm Fast-acting ceramic tube fuses
Technical Data 2051
Effective June 2017
Dimensions - mm
Drawing Not to Scale
Time -Current Curve
Packaging Code
Packaging CodeDescription
BK 100 fuses packed into a cardboard carton
BK11000 fuses packed into a poly bag
TR2
1500 fuses packed into tape on a reel (19.05 mm lead wire length)
Option Code
Option CodeDescription
VAxial leads - copper tinned wire with nickel-plated brass endcaps
Mouser Electronics
Authorized Distributor
Click to View Pricing, Inventory, Delivery & Lifecycle Information:
Eaton:
BK/S501-63-R BK/S501-250-R BK/S501-80-R BK/S501-8-R BK/S501-6.3-R BK/S501-50-R BK/S501-5-R
BK/S501-500-R BK/S501-3.15-R BK/S501-200-R BK/S501-2.5-R BK/S501-2-R BK/S501-160-R BK/S501-125-R
BK/S501-100-R BK/S501-4-R BK/S501-800-R S501-10-R BK1-S501-630-R BK-S501-1-R BK-S501-630-R S501-1-
R S501-315-R S501-400-R S501-630-R BK1-S501-1-6-R BK1-S501-2-5-R BK-S501-V-1-6-R S501-1-25A S501-1-
6A S501-1-6-R S501-2-5-R TR2-S501-V-6-3R BK-S501-10-R BK1-S501-100-R BK1-S501-10-R BK1-S501-125-R
BK1-S501-160-R BK1-S501-1-R BK1-S501-200-R BK1-S501-250-R BK1-S501-2-R BK1-S501-315-R BK1-S501-
400-R BK1-S501-4-R BK1-S501-500-R BK1-S501-50-R BK1-S501-5-R BK1-S501-63-R BK1-S501-800-R BK1-
S501-80-R BK1-S501-8-R BK-S501-125MA BK-S501-160MA BK-S501-2A BK-S501-800MA BK-S501-V-100-R BK-
S501-V-10A BK-S501-V-10-R BK-S501-V-125-R BK-S501-V-160-R BK-S501-V-1-R BK-S501-V-200-R BK-S501-V-
250-R BK-S501-V-2-5-R BK-S501-V-2-R BK-S501-V-3-15R BK-S501-V-4-R BK-S501-V-500-R BK-S501-V-50-R
BK-S501-V-5-R BK-S501-V-63-R BK-S501-V-63R81 BK-S501-V-800-R BK-S501-V-80-R BK-S501-V-8-R S501-100-
R S501-125-R S501-160-R S501-1A S501-200-R S501-250-R S501-2-R S501-315MA S501-400MA S501-4-R
S501-500-R S501-50-R S501-5-R S501-630MA S501-63-R S501-800-R S501-80-R S501-8A S501-8-R
BK1/S501-100-R BK1/S501-10-R BK1/S501-125-R BK1/S501-160-R BK1/S501-200-R
