Special Application Fuses Intrinsically Safe > Radial Leaded > PICO® 305 Series Fuse PICO® 305 Series - 277V Intrinsically Safe Fuse RoHS Description The PICO® 305 Series Fuse offers a range of encapsulated fuses certified under UL 913 , the standard for intrinsically safe electrical equipment, to operate in hazardous locations. Ideal for use in oil, gas, mine, chemical, and pharmaceutical process industries, the PICO 305 Series fuse was designed to limit the energy and temperature generated during its operation. The fuse design and its encapsulant are suitable for use in an intrinsically safe apparatus and associated apparatus for peak voltage not exceeding 375V. Features • High Interrupting Rating of • Designed for operation in a range of hazardous 1500A environments • Well suited for 277V Agency Approvals Agency Agency File Number • Encapsulated and sealed (1mm minimum) applications • RoHS Compliant DEMKO 13 ATEX 1200U • Global hazardous location certifications E358130 IECEx UL 13.0077U Applications • Testing, measuring or • Process control and processing electronic and automation electrical equipment •Sensors • Motor controllers •Lighting Reference Standards Agency Standards ATEX EN 60079-0, EN 60079-11, EN 60079-26 IECEx IEC 60079-0, IEC 60079-11, IEC 60079-26 UL UL 913, UL 60079-0, UL 60079-11 cUL CAN/CSA C22.2 No. 157, CAN/CSA C22.2 No. 60079-0, CAN/CSA C22.2 No. 60079-11 • Communication handsets • Flow/gas meters Electrical Characteristics for Series % of Ampere Rating 110% 300% 1000% Opening Time 4 Hours, Minimum 10 Seconds, Maximum 0.002 Seconds, Maximum Electrical Specifications by Items Ampere Rating (A) Amp Code Interrupting Rating Nominal Melting I2t (A2 Sec.) Minimum Cold Minimum Cold Resistance at Resistance at -20°C (Ohms) -40°C (Ohms) Agency Approvals Nominal Cold Resistance at 25°C (Ohms) 0.050 .050 0.00019 9.202 9.010 12.00 x x x 0.080 .080 0.00035 6.031 5.963 8.19 x x x 0.100 .100 0.00070 2.709 2.668 5.00 x x x 0.160 .160 0.00202 2.297 2.292 3.00 x x x 0.200 .200 0.00288 1.935 1.839 2.68 x x x 0.250 .250 0.060050 1.268 1.105 1.60 x x x 0.500 .500 0.127400 0.392 0.368 0.46 x x x 0.750 .750 0.13448 0.219 0.196 0.27 x x x 1500A @ 277VAC/DC Notes: 1) The fuse must be mounted so that creepage and clearance distances aren’t impaired in any way. 2) The fuse is suitable for use in intrinsically safe equipment and associated apparatus for voltage not exceeding 375V peak. 3) Maximum surface temperature rise at 170% rated current: ≤200mA=80°C, 250mA = 84°C, 500mA = 56°C, and 750mA = 84°C. © 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 12/04/15 Special Application Fuses Intrinsically Safe > Radial Leaded > PICO® 305 Series Fuse - 40ºC to +50ºC 0.250 A - 40ºC to +46ºC 0.500 A - 40ºC to +74ºC 0.750 A - 40ºC to +46ºC 100 .080A .100A .160A .200A .250A Ambient Temperature ≤ 0.200 A .050A Operating Temperature Current Rating .500A .750A 305Curves Series Average Time Current Product Characteristics 0.1 1 CURRENT IN AMPERES 10 Notes: 1) Any use of the 305 Series fuse outside of the ambient temperature ranges specified in the table is subject to additional investigation. 2) Specified ambient temperature range is for intrinsic safety certification. Polyamide 6 CTI 175 volts minimum Continuous Operating Temperature: 130°C Thermal Shock Withstands 5 cycles of –55°C to 125°C Vibration Per MIL-STD-202 Insulation Resistance (After Opening) Greater than 10,000 ohms (at twice rated DC voltage) Soldering Parameters Wave Soldering TIME IN SECONDS Molding Material 1 0.1 0.01 0.001 0.0001 0.01 10 100 1000 260°C, 10 seconds max. Temperature Rerating Curve Dimensions 15.60±0.50 9.00±0.50 +1.00 5.00- 0.50 12.70±0.20 0.64 Part Numbering System 0305 .050 M SERIES AMP CODE Refer to Amp Code column in the Electrical Specifications table. Notes: 1) Rerating depicted in this curve is in addition to the standard rerating of 25% for continuous operation. 2) The temperature rerating curve represents the nominal conditions. For questions about temperature rerating curve, please consult Littelfuse technical support for assistance. QUANTITY & PACKAGING CODE M = Bulk pack, 1000 pcs H = Bulk pack, 100 pcs V = Bulk pack, 5 pcs © 2015 Littelfuse, Inc. Specifications are subject to change without notice. Revised: 12/04/15