Special Application Fuses PICO 259 Series Safe-T-Plus Fuse for Hazardous Locations RoHS PICO 259 Series Safe-T-Plus Fuse 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 Features Encapsulated and sealed Suitable for use in Class Agency Agency File Number Ampere Range (1mm minimum) I, Groups A, B, C and Baseefa02ATEX0071U 0.062A - 5A D Class II, Groups E, 0.062A - 5A range options F and G Class III and IECEx BAS 10.0098U 0.062A - 5A Designed to operate Class I, Zone 0, AEx ia IIC within environments Hazardous Locations. E10480 0.062A - 5A where there is danger of E358130 Suitable for use in Gas, gas explosion from faulty Zone 0 Hazardous circuits Locations per IEC and EN Electrical Characteristics for Series ATEX and IECEx certified 60079 Series components % of Ampere Rating Opening Time RoHS compliant 100% 4 Hours, Minimum 200% 5 Seconds, Maximum Applications Reference Standards Testing, measuring or processing electronic and Agency Standards electrical equipment ATEX EN 60079-0, EN 60079-11 IECEx IEC 60079-0, IEC 60079-11 Additional Information UL UL 913, UL 60079-0, UL 60079-11 Datasheet Samples Resources 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD.10/13/20Special Application Fuses PICO 259 Series Safe-T-Plus Fuse for Hazardous Locations Electrical Specifications by Items Agency Approvals Ampere Minimum Cold Minimum Cold Nominal Cold Amp Nominal Melting Rating Interrupting Rating Resistance at Resistance at Resistance at 25C 2 2 Code I t (A Sec.) (A) -20C (Ohms) -40C (Ohms) (Ohms) 0.062 .062 0.00011 4.89 4.39 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 50A 125 VAC 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 300A 125 VDC 0.750 .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 50A 125 VAC 5.00 005. 4.14 0.01 0.005 0.0158 x x x 300A 63 VDC Schedule of limitations: 1.The fuse must be so mounted that creepage and clearance distances arent 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=40C, 1A=55C, 3A=118C and 5A=135C. 259 Series Product Characteristics Average Time Current Curves Body : Polyamide Materials Terminals - Tin Plated Copper Alloy Max. operating temperature of materials 130C 100 Operating temperature depends on fuse Operating rating and max. allowed fuse surface Temperature temperature. (Consider re-rating) Thermal Shock Withstands 5 cycles of 55C to 125C 10 Vibration Per MIL-STD-202, Method 201 Insulation Resistance Greater than 10,000 ohms (After Opening) 1 Temperature Re-rating Curve 0.1 0.01 0.001 0.1 1 10 100 1000 CURRENT IN AMPERES Note: 1. Re-rating depicted in this curve is in addition to the standard derating of 25% for continuous operation. 2020 Littelfuse, Inc. Specifications are subject to change without notice. Revised: GD.10/13/20 TIME IN SECONDS .062 A .125 A .250 A .375 A .500 A .750 A 1 A 3.15 A 5 A