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| PartNumber | FBMOV420M | FBMOV460M | FBMOV440M |
| Description | Varistors Fuse Body MOV | Varistors Fuse Body MOV | Varistors Fuse Body MOV |
| Manufacturer | Littelfuse Inc. | Littelfuse Inc. | Littelfuse Inc. |
| Product Category | TVS - Varistors, MOVs | TVS - Varistors, MOVs | TVS - Varistors, MOVs |
| Series | FBMOV | FBMOV | FBMOV |
| Packaging | Bulk | Bulk | Bulk |
| Mounting | Axial | Axial | Axial |
| Operating Temperature Range | - 55 C to + 85 C | - 55 C to + 85 C | - 55 C to + 85 C |
| Length | 85.1 mm | 85.1 mm | 85.1 mm |
| Package Case | Axial Cylinder | Axial Cylinder | Axial Cylinder |
| Capacitance | 1640 pF | 1500 pF | 1580 pF |
| Mounting Type | Screw Mount | Screw Mount | Screw Mount |
| Number of Circuits | 1 | 1 | 1 |
| Diameter | 40.2 mm | 40.2 mm | 40.2 mm |
| Varistor Voltage Min | 612V | 675V | 643V |
| Varistor Voltage Typ | 680V | 750V | 715V |
| Varistor Voltage Max | 748V | 825V | 787V |
| Current Surge | 40kA | 40kA | 40kA |
| Maximum AC Volts | 420VAC | 460VAC | 440VAC |
| Maximum DC Volts | 560VDC | 615VDC | 585VDC |
| Energy | 920J | 980J | 940J |
| Voltage Rating AC | 420 VAC | 460 VAC | 440 VAC |
| Voltage Rating DC | 560 VDC | 615 VDC | 585 VDC |
| Clamping Voltage | 1.1 kV | 1.22 kV | 1.16 kV |
| Peak Surge Current | 40 kA | 40 kA | 40 kA |
| Surge Energy Rating | 920 J | 980 J | 940 J |
