Brochure

© 2017 Littelfuse, Inc.
Specifications are subject to change without notice.
Revised: 03/03/17
Special Application Fuses
PICO
®
259 Series Safe-T-Plus Fuse for Hazardous Locations
PICO
®
259 Series Safe-T-Plus Fuse
Description
Agency Approvals
Reference Standards
Agency Agency File Number Ampere Range
Baseefa02ATEX0071U 0.062A - 5A
IECEx BAS 10.0098U 0.062A - 5A
E10480 0.062A - 5A
Agency Standards
ATEX
EN 60079-0, EN 60079-11
IECEx
IEC 60079-0, IEC 60079-11
Electrical Characteristics for Series
Features
Applications
RoHS
% of Ampere
Rating
Opening Time
100% 4 Hours, Minimum
200% 5 Seconds, Maximum
• Encapsulated and sealed
(1mm minimum)
•
0.062A - 5A range options
• Designed to operate
within environments
where there is danger of
gas explosion from faulty
circuits
• ATEX and IECEx certified
components
• RoHS compliant
Electrical Specifications by Items
Schedule of limitations:
1) The fuse must be so mounted that creepage and clearance distances aren’t impaired in any way.
2) The fuse is suitable for use in intrinsically safe equipment for voltages not exceeding 190V peak.
3) Maximum surface temperature rise at 170% rated current: ≤750mA=40ºC, 1A=55ºC, 3A=118ºC and 5A=135ºC.
Ampere
Rating
(A)
Amp
Code
Interrupting
Rating
Nominal
Melting
I
2
t (A
2
Sec.)
Minimum Cold
Resistance at
-20°C (Ohms)
Minimum Cold
Resistance at
-40°C (Ohms)
Nominal Cold
Resistance at
25°C (Ohms)
Agency Approvals
0.062 .062
50A @ 125 VAC
300A @ 125 VDC
0.00011 4.89 4.39 7. 0 0 x x x
0.125 .125 0.0012 1.35 1.26 1.70 x x x
0.250 .250 0.0095 0.51 0.48 0.665 x x x
0.375 .375 0.025 0.32 0.29 0.395 x x x
0.500 .500 0.0598 0.24 0.22 0.302 x x x
0.750 .750 0.153 0.14 0.12 0.175 x x x
1. 0 0 0 01. 0.256 0.10 0.07 0.128 x x x
3.00 003. 1.27 0.03 0.01 0.03 x x x
5.00 005.
50A @ 125 VAC
300A @ 63 VDC
4.14 0.01 0.005 0.0158 x x x
The Safe-T-Plus 259 Series offers a range of encapsulated
fuses designed to enable greater safety for operating
electronic equipment within potentially explosive
environments. Originally designed to serve the needs of gas
plants, petrochemical and processing industries, these fuses
are certitifed for use within intrinsically safe apparatus with
ATEX and IECEx certifications.
The fuse design and its encapsulant are suitable for use in
intrinsically safe appartatus and associated apparatus for
voltage not exceeding 125V rms (190V peak).
• Testing, measuring or
processing electronic and
electrical equipment
Additional Information
Datasheet
Samples
Resources
Application testing is strongly recommended.