POWR-GARD Fuse Datasheet SPXI SERIES IN-LINE SOLAR FUSE 1500 V dc 2.532 A Specifications Voltage Rating 1500 V dc Amperage Rating 2.5, 3.5, 4, 4.5, 5, 6, 8, 10, 12, 15, 20, 25, 30, 32 A Interrupting Ratings SPXI and SPXI-B: 30 kA SPXI-M and SPXI-BM: 50 kA Time Constant 1ms Material Body: Melamine Caps: copper alloy (nickel plated) Approvals SPXI and SPXI-B: UL 248-19 Recognized SPXI-M and SPXI-BM: UL Pending (File: E339112) Environmental RoHS Compliant Description REACH The Littelfuse SPXI solar fuse is designed to integrate Country of Origin Mexico into an in-line assembly within a wire harness. The fuse US Patent 9,564,281 provides photovoltaic (PV) protection that meets UL 248-19 for photovoltaic applications. The SPXI can be electrically Part Numbering System insulated by either overmolding or using heat-shrink. SPXI xxx T XB Options Features/Benefits Series Blank = 1012 AWG UL 248-19 Recognized XB = 8 AWG (2.520A) XM = 10-12 AWG (2532 A) Meets IEC 60269-6 electrical performance requirements Amp Code XBM = 8 AWG (2532 A) 50,000 A interrupting rating Refer to Amp Code Column in Ordering Information Table No fuse holder required Package Quantity T = 10 Applications L = 50 Photovoltaic wire harness Web Resources Recommended Crimping Tool Download additional technical information and view the SPXI and SPXI-M: T&B Sta-Kon ERG4002 complete solar portfolio: Littelfuse.com/spxi SPXI-B and SPXI-BM: T&B Sta-Kon ERG4 SPXI Dimensions mm (in) 81.41 (3.205) 2.54 A 9.53 3.56 5.59 10.31 12.26 (0.375) (0.140) (0.220) (0.406) (0.483) 110.06 (4.333) 4.520 A 3.56 5.59 12.26 9.53 (0.140) (0.220) (0.483) (0.375) 10.31 (0.406) 110.06 (4.333) 3.56 9.53 12.26 13.72 5.59 (0.140) (0.375) 2530 A (0.483) (0.540) (0.220) Littelfuse.com 2019 Littelfuse, Inc. 1 of 11 Rev: 110419 POWR-GARD Fuse Datasheet 81.41 SPXI SERIES IN-LINE SOLAR FUSE (3.205) 9.53 3.56 5.59 10.31 12.26 (0.375) (0.140) (0.220) (0.406) (0.483) SPXI-M Dimensions mm (in) 2532 A 110.06 (4.333) 3.56 5.59 12.26 9.53 (0.140) (0.220) 10.31 (0.483) (0.375) (0.406) 110.06 (4.333) 3.56 9.53 13.72 12.26 (0.140) 5.59 (0.375) (0.483) (0.540) (0.220) SPXI-B Dimensions mm (in) SPXI-B Dimensions mm (in) 22..55-4A4 A 85.40 3.362 4.70 10.25 6.70 14.25 10.31 0.404 0.185 0.264 0.561 0.406 44..55-202A0 A 114.05 SPXI-B Dimensions mm (in) 4.490 4.70 6.70 14.25 10.25 10.31 0.185 0.264 0.561 0.404 0.406 2.5-4A 85.40 3.362 4.70 10.25 6.70 14.25 0.404 10.31 0.185 0.264 0.561 0.406 SPXI-BM Dimensions mm (in) 2532 A 4.5-20A 114.05 4.490 4.70 6.70 14.25 10.25 10.31 0.185 0.264 0.561 0.404 0.406 Littelfuse.com 2019 Littelfuse, Inc. 2 of 11 Rev: 110419