LITTELFUSE 0259001., 0259.750, 0259.500, 0259.375, 0259.250 Datasheet
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Hazardous Area Fuses
326
www.littelfuse.com
Barrier Network Fuse 242 Series
Safe-T-Plus Fuse
259 Series
(.512")
13
mm
(.394")
10
mm
(.025")
.635
mm
(.315")
8
mm
(.197")
5
mm
• Meets Barrier Network Standards (EN50020) for hazardous applications.
• High interrupting rating. Meets the 1500A minimum.
• Available in both axial lead and surface mount.
ELECTRICAL CHARACTERISTICS:
% of Ampere Rating Opening Time
110% 4 hours, Minimum
300% 10 seconds, Maximum
1000% 0.002 seconds, Maximum
INTERRUPTING RATINGS: 4000 amperes at 250VAC/VDC
PACKAGING (500 pcs): For surface mount version add packaging suf-
fix UR. For Axial Leaded version add packaging suffix UA. For Axial
Leaded version, taped add packaging suffix UAT1.
ORDERING INFORMATION:
Nominal Nominal
Catalog Ampere Color Resistance Melting I2t
Number Rating Coding Cold Ohms A2Sec.
0242.050 .050 Red 11.34 0.000103
0242.080 .080 Green 8.19 0.000214
0242.100 .100 Blue 3.60 0.000977
0242.160 .160 Violet 3.00 0.00157
0242.200 .200 Brown 2.68 0.0038
0242.250 .250 Black 1.6 0.00579
• Designed to allow equipment to meet “Intrinsically Safe” certification for
applications in gas plants, petrochemical and processing industries
where there is a danger of gas explosion from faulty circuits.
• Hermetically sealed.
ELECTRICAL CHARACTERISTICS:
% of Ampere Rating Opening Time
100% 4 hours, Minimum
200% 5 seconds, Maximum
AGENCY APPROVALS: Meets CENELEC EN500014 to 039 and
IEC 60079-11.
INTERRUPTING RATINGS:
50 amperes at 125 VAC
300 amperes at 125 VDC
ORDERING INFORMATION:
3.02mm
(.119")
8.40mm
(.331")
4.60mm
(.181" )
1.90mm
(.075")
3.02mm
(.119")
8.40mm
(.331")
4.60mm
(.181" )
1.90mm
(.075")
.635mm
(.025")
Maximum Nominal
Catalog Ampere Voltage Resistance Melting I2t
Number Rating Drop Cold Ohms A2Sec.
0259.062 .062 2.1 8.1 0.00016
0259.125 .125 1.3 2.4 0.0012
0259.250 .250 0.83 0.87 0.0095
0259.375 .375 0.81 0.46 0.025
0259.500 .500 0.78 0.32 0.07
0259.750 .750 0.23 0.19 0.062
0259001. 1 0.24 0.14 0.01
Schedule of limitations.
1) The fuse must be so mounted that creepage and clearance distances meet the requirements
of Table 2 of EN50020 :1977 or Table 4 of EN50020 :1994 (equivalent to IEC 60079-11 4th
Edition 1999).
2) When used in intrinsically safe apparatus it will be necessary to determine a surface
temperature classification for the fuse.
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