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Glossary of Terms <strong>Bussmann</strong> ® Ohm’s Law The relationship between voltage, current, and resistance, expressed by the equation E = IR, where E is the voltage in volts, I is the current in amperes, and R is the resistance in ohms. One Time Fuses Generic term used to describe a Class H nonrenewable cartridge fuse, with a single element. Overcurrent A condition which exists on an electrical circuit when the normal load current is exceeded. Overcurrents take on two separate characteristics—overloads and short circuits. Overload Can be classified as an overcurrent which exceeds the normal full load current of a circuit. Also characteristic of this type of overcurrent is that it does not leave the normal current carrying path of the circuit—that is, it flows from the source, through the conductors, through the load, back through the conductors, to the source again. Peak Let-Through Current, lp The instantaneous value of peak current letthrough by a current-limiting fuse, when it operates in its current-limiting range. Renewable Fuse (600V & below) A fuse in which the element, typically a zinc link, may be replaced after the fuse has opened, and then reused. Renewable fuses are made to Class H standards. Resistive Load An electrical load which is characteristic of not having any significant inrush current. When a resistive load is energized, the current rises instantly to its steady-state value, without first rising to a higher value. R.M.S. Current The R.M.S. (root-mean-square) value of any periodic current is equal to the value of the direct current which, flowing through a resistance, produces the same heating effect in the resistance as the periodic current does. Semiconductor Fuses Fuses used to protect solid-state devices. See “High Speed Fuses”. Short Circuit Can be classified as an overcurrent which exceeds the normal full load current of a circuit by a factor many times (tens, hundreds or thousands greater). Also characteristic of this type of overcurrent is that it leaves the normal current carrying path of the circuit—it takes a “short cut” around the load and back to the source. Short-Circuit Rating The maximum short-circuit current an electrical component can sustain without the occurrence of excessive damage when protected with an overcurrent protective device. Short-Circuit Withstand Rating Same definition as short-circuit rating. Single Phasing That condition which occurs when one phase of a three phase system opens, either in a low voltage (secondary) or high voltage (primary) distribution system. Primary or secondary single phasing can be caused by any number of events. This condition results in unbalanced currents in polyphase motors and unless protective measures are taken, causes overheating and failure. Threshold Current The symmetrical RMS available current at the threshold of the current-limiting range, where the fuse becomes current-limiting when tested to the industry standard. This value can be read off of a peak let-through chart where the fuse curve intersects the A-B line. A threshold ratio is the relationship of the threshold current to the fuse’s continuous current rating. Time-Delay Fuse A fuse with a built-in delay that allows temporary and harmless inrush currents to pass without opening, but is so designed to open on sustained overloads and short circuits. Voltage Rating The maximum open circuit voltage in which a fuse can be used, yet safely interrupt an overcurrent. Exceeding the voltage rating of a fuse impairs its ability to clear an overload or short circuit safely. Withstand Rating The maximum current that an unprotected electrical component can sustain for a specified period of time without the occurrence of extensive damage. 232
Index by Part Number <strong>Bussmann</strong> ® Catalog Symbol Page Catalog Symbol Page Catalog Symbol Page Catalog Symbol Page Catalog Symbol Page AAO 196 ABC 34 ABCNA 170 ABFNA 170 ABGNA 170 ABWNA 170 AC 197 AD 197 ADLSJ 169 ADOSJ 169 AGA 32 AGC 34 AGU 36 AGW 32 AGX 32 AMWNA 170 ANL 38 ANN 38 ATC 40 ATM 40 BAF 24 BAN 24 BAO 196 BBS 23 BBU 157-158 BC 197 BC6031 64 BC6032 64 BC6033 64 BCCM 64 BD 197 BDAUX 112 BDH 101-102, 104, 109, 111, 114 BDNF 107, 111 BDS 102, 104, 105, 111 BDST 102 BDTA 103, 105 BDTL 103, 104, 105, 112 BDTS 112 BDZX 112 BG 64 BG3011 64 BG3012 64 BG3013 64 BG3021 64 BG3022 64 BG3023 64 BG3031 64 BG3032 64 BG3033 64 BH-0_ _ _ 67, 130, 147 BH-1_ _ _ 67, 130, 147 BH-2_ _ _ 67, 130, 147 BH-3_ _ _ 67, 130, 147 BM 64 BM6031 64 BM6032 64 BM6033 64 BNQ21-WH 93 BP/AGX 208 BP/GLH 208 BP/MAS 208 BP/XMAS 208 BQQ41-WH 93 C30F 199 C515 29 C517 29 C518 29 C519 29 C520 29 C5268 130, 150 C60F 199 CAV 170 CAVH 170 CD 197 CDAUX 103 CDBY 109 CDH 100, 102, 108, 110, 114 CDHX 101-102, 109, 111 CDHXB 104, 114 CDHXY 104, 114 CDHZX 110 CDMC 109 CDN 189 CDNF 106, 108, 110 CDS 100-101, 108-109, 186 CDSWM 109 CEO 196 CFC 103 CFD 99, 100, 101, 103, 102 CFTS 103 CFZ 103 CGL 190 CH 65 CIF06 191 CIF21 191 CIH 194 CIK 194 CIL 194 CJ 192 CM_ _CF 194 CS/XMAS 2048 CT 149 DD 197 DEO 196 DIN 132-138 DLN-R 14 DLS-R 14 DRA 204 ECL055 159 ECL155 160 ED 197 EDA 27 EET 149-150 EF 1937 EFC 113-116 EFJ 113-116 EFL 113-114, 116 EFS 197 EK 191 ENA 27 ENF 117-120 ERK-28 206 ESD 196 ET 149-150 FD 99, 104 FDM 209 FE 149-150 FEE 149-150 FF 197 FG 197 FL11H_ _ 173 FL11K_ _ 173 FL11T_ _ 173 FM 149-150 FMM 149-150 FNA 37 FNM 25 FNQ 25 FNQ-R 22 FP 202 FR-1000 205 FRN-R 12, 205 FRS-R 13, 205 FSD 209 FT 202 FWA 124, 151 FWC 153 FWH 33, 126, 152 FWJ 129, 155 FWK 154 FWL 155 FWP 128, 153-154 FWS 155 FWX 125, 152 G 64 GBA 37 GBB 35 GDA 30 GDB 30 GDC 30 GF 197 GG 197 GH 197 GLD 37 GLQ 39 GLR 39 GMA 31 GMC 31 GMD 31 GMF 39 GMQ 39 GMT 186 GRF 39 H07C 194 H25_ _ _ 47 H60_ _ _ 48 HBH 70 HBV 70 HBW 70 HEB 80, 81 HEC 80 HEG 80 HEH 80 HEJ 80 HET 80 HEX 80 HEY 80 HFA 77 HFB 76 HHB 76 HHC 82 HHD 82 HHF 82 HHG 82 HHL 82 HHM 87 HHT 77 HHX 82 HJL 75 HK 75 HKL 75 HKP 72 HKR 75 HKT 75 HKU 75 HKX 75 HLD 75 HLQ 39 HLR 39 HLS 186 HLT 186 HM 77 HME 77 HMF 77 HMG 77 HMH 77 HMI 77 HMJ 77 HPC-D 79 HPD 78 HPF 78 HPG 78 HPM 79 HPS 78 HPS2 79 HR 77 HRC 195, 199 HRE 77 HRF 77 HRG 77 HRH 77 HRI 77 HRJ 77 HRK 76 HTB 73, 74 HTC-140M 85 HTC-15M 85 HTC-200M 85 HTC-210M 85 HTC-30M 71 HTC-35M 71 HTC-40M 71 HTC-45M 69 HTC-50M 69 HTC-55M 71 HTC-60M 69 HTC-65M 69 HTC-70M 71 HVA 171 HVB 171 HVJ 171 HVL 171 HVR 171 HVT 171 HVU 171 HVW 171 HVX 171 IBS 150 J-_ _ 203 J60030 53, 54 J60060 53, 54 J60100 53, 54 J60200 53, 54 J60400 53, 54 J60600 53, 54 J70100 56 JCD 166 JCE 166 JCG 161, 163 JCH 161, 162 JCI 166 JCK 162, 162 JCL 161, 162, 163 JCQ 166 JCR 161, 163 JCT 166 JCU 168 JCW 166 JCX 167 JCY 167 JCZ 168 JDZ 168 JJN 19 JJS 19 JKS 18 JP60030 55 JT(N)60030 57, 58 JT(N)60060 57, 58 K 28 K07C 194 KAC 127 KAZ 38 KBC 127 KCA 28 KCB 28 KCC 28 KCD 28 KCE 28 KCF 28 KCH 28 KCJ 28 KCM 28 KCR 28 KCS 28 KCY 28 KCZ 28 KDA 28 KDB 28 KDC 28 KDD 28 KDE 28 KDF 28 KDH 28 KDJ 28 KDM 28 KDP 28 KDR 28 KDT 28 KDY 28 KEW 28 KEX 28 KFH-A 28 KFM 28 KFT 28 233
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Bussmann® Circuit Protection Solut
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Bussmann ® i Section Guide Page 1
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General Data — Selection Chart Bu
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General Data - Dimensions (Millimet
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Electrical - Power Fuses CUBEFUSE a
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Electrical - Power Fuses Bussmann
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Electrical - Power Fuses Low-Peak
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Electrical - Power Fuses Fusetron
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Electrical - Power Fuses T-Tron ®
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Electrical - Power Fuses Plug Fuses
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Electronic - PC Board and Small Dim
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⁄Ω¢∑ Diameter ≈ 1∑ Length
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Fuseblocks, Holders and Terminal Bl
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Fuseblocks, Holders and and Disconn
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Overview for Fusible Disconnect Swi
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Handles & Shafts For 30A Fusible Di
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Accessories For 60A - 100A Fusible
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Accessories Bussmann ® For 200A -
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Overview Bussmann ® For Non-Fusibl
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Handles & Shafts Bussmann ® For 16
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400A - 800A Non-Fusible Disconnect
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Enclosed Fusible Disconnect Switche
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Other Configurations Bussmann ® fo
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Enclosed Non-Fusible Disconnect Swi
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Enclosed Non-Fusible Disconnect Swi
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Disconnect Switches Bussmann ® Fus
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High Speed Fuses North American Sty
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High Speed Fuses Bussmann ® North
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High Speed Fuses Bussmann ® Europe
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High Speed Fuses European Style Squ
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High Speed Fuses Fuse Bases (Blocks
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High Speed Fuses British Standard B
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High Speed Fuses Bussmann ® Ferrul
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Medium Voltage Fuses and Fuse Links
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Telpower ® DC Power Protection Sys
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Telecommunications Protection Fused
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Telpower ® DC Power Protection Sys
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Page 194 and 195: British, European, & Canadian Stand
Page 206 and 207: Fuse Accessories, Displays, Kits, E
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Page 222 and 223: Fuse Diagnostic Chart Bussmann ® 2
Page 224 and 225: Time-Current & Current Limitation C
Page 238 and 239: Index by Part Number Bussmann ® Ca
Page 240: CUBEFuse The World’s First “Fin
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