0 VDC 125-4A Specifications Description The SPFJ series is the smallest 0VDC 125-4A photovoltaic fuse available in the market. The SPFJ series is manufactured in Class J case sizes that allows for both fuseholder and busbar mounting configuration. The SPFJ meets both UL and IEC requirements. Features/Benefits Meets both UL and IEC photovoltaic standards Small footprint reduces panel size Full-range PV time-current characteristic Flexibility of fuseholder or busbar mounting Higher amperage solar fuses in standard sizes UL Listed Class J branch and feeder circuit rated Voltage Ratings: Interrupting Rating: 0 VDC AC: 0 kaic; DC: 125-0 A: kaic 2-0 A: 10 kaic 4 A: kaic Amperage: 125, 1, 0, 2,, 3, 0, 4 Approvals: UL 2579 Listed UL 248-8, Class J C UL (Approval on Class J fuse no PV standard) VDE certifications to IEC 269-6 in progress Material: Body-Melamine End Bells-Copper Alloy Environmental: RoHS Compliant Country of Origin: Mexico Applications Inverters Re-combiner boxes Recommended Fuseholder LFJ 0VDC Solar Series Dimensions in mm (inches) F E A B C D G Amperage DIMENSIONS IN INCHES (MM) A B C D E F G 125-0 3 (76.2) 4 11 /32 (110.19) 5 21 /32 (144.02) 1 1 /2 (38.1) 1 1 /8 (28.6) 9/32 (7.1) 3/16 (4.8) 2-0 3 3 /8 (85.7) 5 1/4 (133.35) 7 1 /8 (181.0) 2 (.8) 1 5 /8 (41.3) 13/32 (10.3) 1/4 (6.4) 4 3 3 /4 (95.3) 5.98 (151.99) 8 (3.2) 2 1 /2 (63.5) 2 (.8) 17/32 (13.5) 3/8 (9.5) Look for this logo to indicate products that are used in solar applications. Visit our website /solar for the latest updates on approvals, certifications, codes and standards. 1 JUNE 11 Littelfuse POWR-GARD Products
Ordering Information PART Number number UPC Agency Approvals UL VDE* CE ROHS CCC* C UL SPFJ 125 SPFJ125.X 125 07945894924 l l l l l l SPFJ 1 SPFJ1.X 1 07945894925 l l l l l l SPFJ 0 SPFJ0.X 0 07945894926 l l l l l l SPFJ 2 SPFJ2.X 2 07945894927 l l l l l l SPFJ SPFJ.X 07945894928 l l l l l l SPFJ 3 SPFJ3.X 3 07945894929 l l l l l l SPFJ 0 SPFJ0.X 0 079458949 l l l l l l SPFJ 4 SPFJ4.X 4 07945894931 l l l l l l Electrical Specifications Number Rating VOLTAGE RATING Interrupting Rating TOTAL CLEARING I 2 T (A 2 SEC) ka (0Vac) TOTAL CLEARING I 2 T (A 2 SEC) 10 ka (0Vdc) TOTAL CLEARING I 2 T (A 2 SEC) ka (0Vdc) AC DC AC DC SPFJ125.X 125 0 0 0 ka ka 247 17391 23529 SPFJ1.X 1 0 0 0 ka ka 38771 47465 SPFJ0.X 0 0 0 0 ka ka 1000 66151 79642 SPFJ2.X 2 0 0 0 ka 10 ka 850 55897 N/A SPFJ.X 0 0 0 ka 10 ka 140 91129 N/A SPFJ3.X 3 0 0 0 ka 10 ka 2 1863 N/A SPFJ0.X 0 0 0 0 ka 10 ka 00 2894 N/A SPFJ4.X 4 0 0 0 ka ka 565333 1687 0916 Number Rating Nom Cold Resistance (Ohm) MELTING I 2 T (10kA dc) (0Vdc) MELTING I 2 T (ka dc) (0Vdc) Watts Loss at % Rated Current (W) WATTS LOSS AT % RATED CURRENT (W) WATTS LOSS AT % RATED CURRENT (W) SPFJ125.X 125 0.964 6863 5824 23.00 12. 9.04 SPFJ1.X 1 0.613 153 19368 22.77 12.67 9.15 SPFJ0.X 0 0.4 353 322 27. 15.09 10.87 SPFJ2.X 2 0.485 31022 N/A 49.17 26..59 SPFJ.X 0.367 591 N/A 52. 28.32.02 SPFJ3.X 3 0.285 109799 N/A 54.48 29.31.99 SPFJ0.X 0 0.236 198654 N/A 58. 31.47 22.21 SPFJ4.X 4 0.187 317627 1877.55 28.68.79 * In Progress C UL Approval on Class J fuse (no CSA PV standard exists) 2 JUNE 11 Littelfuse POWR-GARD Products
Electrical Specification Agency Requirements NUMBER. % of Amp Rating per UL 113% of Amp Rating per IEC Opening Time (Minutes) 135% of Amp Rating per UL 145% of Amp Rating per IEC 0% of Amp Rating per UL SPFJ125.X 125 1 Min 1 Max SPFJ1.X 1 10 Max SPFJ0.X 0 SPFJ2.X 2 SPFJ.X SPFJ3.X 3 Temperature Stabilization 1 Min 1 Max 1 Max 12 Max SPFJ0.X 0 SPFJ4.X 4 2 Min 2 Max 14 Max PERCENT OF UPRATING Temperature Rerating Curve 0 0 PERCENT OF DOWNRATING - C - C - C 0 C C C C C C 1 C 1 C -76 F - F -4 F -32 F 68 F 104 F 1 F 176 F 212 F 248 F 284 F AMBIENT TEMPERATURE 3 JUNE 11 Littelfuse POWR-GARD Products
Recommended Torque Values For Buss Bar Mounting RECOMMENDED TORQUE VALUES FOR BUSS BAR MOUNTING FUSE NUMBER FUSE TORQUE METRIC (STANDARD) HARDWARE size Metric (Standard)* SPFJ125.X 7.3 N m (65 in-lb) 6mm ( 1 /4 -) SPFJ1.X 7.3 N m (65 in-lb) 6mm ( 1 /4 -) SPFJ0.X 7.3 N m (65 in-lb) 6mm ( 1 /4 -) SPFJ2.X 19.2 N m (1 in-lb) 10mm ( 3 /8-16) SPFJ.X 19.2 N m (1 in-lb) 10mm ( 3 /8-16) SPFJ3.X 19.2 N m (1 in-lb) 10mm ( 3 /8-16) SPFJ0.X 19.2 N m (1 in-lb) 10mm ( 3 /8-16) SPFJ4.X 19.2 N m (1 in-lb) 12mm ( 7 /16-14) * Recommended minimum hardware grade 2 or class 5.8 For fuseholder information, drawings and specifications visit /solar 4 JUNE 11 Littelfuse POWR-GARD Products
DRAWN BY: NCS POWR-GARD Fuse Datasheet TIME CURRENT CURVE Time Current Curve 000 000 000 000 000 000 000 00 000 00 00 00 00 00 00 00 0 00 0 0 0 0 0 0 0 0 10 0 0 0 0 0 0 0 4A 0 0 0 0 0 0 0 0 0A 0 3A A 2A 0A 1A 125A TIME IN SECONDS 10 98 7 6 5 4 3 2 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 10 9 8 7 6 5 4 3 2 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.2 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.1 0.09 0.08 0.07 0.06 0.05 0.04 0.03 0.02 0.02 0.01 0.01 10 0 0 0 0 0 0 0 0 5 00 CURRENT IN AMPERES 0 00 00 00 00 00 00 00 TEST VOLTAGE: 0 Vdc TIME CONSTANT/ POWER FACTOR: FUSE CATALOG NUMBER BASIS FOR DATA: 000 00 000 000 000 000 000 000 000 SPFJ 125A-4A JUNE 11 Littelfuse POWR-GARD Products
0000 PEAK LET-THRU CHARACTERISTIC CURVES 000 4A PEAK LET- THRU IN AMPERES 00 0A 3A A 2A 0A 0A 1A 125A 0 0 00 000 0000 Tested at 0 Vac AVAILABLE FAULT CURRENT SYMMETRICAL R.M.S. AMPERES 6 JUNE 11 Littelfuse POWR-GARD Products