Special Application Fuses
PICO® 259 Series Safe-T-Plus Fuse for Hazardous Locations
PICO® 259 Series Safe-T-Plus Fuse
RoHS
Description
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).
Agency Approvals
Agency
Features
Agency File Number
Ampere Range
Baseefa02ATEX0071U
0.062A - 5A
IECEx BAS 10.0098U
0.062A - 5A
E10480
0.062A - 5A
• Encapsulated and sealed
(1mm minimum)
• 0.062A - 5A range options • RoHS compliant
• Designed to operate
within environments
where there is danger of
gas explosion from faulty
circuits
Electrical Characteristics for Series
% of Ampere
Rating
Opening Time
100%
4 Hours, Minimum
200%
• ATEX and IECEx certified
components
5 Seconds, Maximum
Applications
• Testing, measuring or
processing electronic and
electrical equipment
Reference Standards
Additional Information
Agency
Standards
ATEX
EN 60079-0, EN 60079-11
IECEx
IEC 60079-0, IEC 60079-11
Datasheet
Samples
Resources
Electrical Specifications by Items
Ampere
Rating
(A)
Amp
Code
0.062
.062
Interrupting
Rating
Nominal
Melting
I2t (A2 Sec.)
0.00011
Minimum Cold Minimum Cold
Resistance at
Resistance at
-20°C (Ohms)
-40°C (Ohms)
4.89
4.39
Agency Approvals
Nominal Cold
Resistance at
25°C (Ohms)
7
.00
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
0.500
.500
0.750
50A @ 125 VAC
0.025
0.32
0.29
0.395
x
x
x
300A @ 125 VDC
0.0598
0.24
0.22
0.302
x
x
x
.750
0.153
0.14
0.12
0.175
x
x
x
1.00
001.
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
4.14
0.01
0.005
0.0158
x
x
x
5.00
005.
50A @ 125 VAC
300A @ 63 VDC
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.
© 2016 Littelfuse, Inc.
Specifications are subject to change without notice. Application testing is strongly recommended.
Revised: 01/04/16