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Eaton S506-V-125-R 125 mA 250 Vac Time-Delay Axial Lead Glass Tube Fuse
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pEaton S506-V-125-R — 125 mA, 250 V, time-delay glass cartridge fuse, 35 A at 250 Vac, 50 Hz interrupting./p
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Eaton S506-V-125-R 125 mA 250 Vac Time-Delay Axial Lead Glass Tube Fuse
Built by Eaton, the S506-V-125-R carries 125 mA, uses a time-delay element, in a glass body.
Technical Data
| Parameter | Rating |
|---|---|
| Parameter | Value |
| Orderable part number | S506-V-125-R (TR2- = 1,500 pcs on reel; BK- = 100 pcs carton) |
| Current rating | 125 mA A |
| Lead diameter (dim A) | 0.65 mm tinned copper |
| Voltage | 250 Vac |
| Pre-arcing I2t (typical) | 0.063 A2s |
| Body diameter | 5.54 mm +/- 0.20 mm |
| Typical voltage drop | 390 mV at rated current |
| Interrupting rating | 35 A at 250 Vac, 50 Hz |
| Overall length (cap to cap) | 21.1 mm +/- 0.81 mm |
| Lead spacing (dim B) | 38.1 mm +/- 0.38 (BK-) / 15.8 mm +/- 2.0 (TR2-) |
| Agency | cURus (E19180, JDYX2); SEMKO; VDE; BSI; IMQ; KC; CCC |
| Body | 5 x 20 mm glass tube, nickel-plated brass end caps |
| Design standard | IEC 60127-1 and 60127-2, T time-lag |
| Typical DC cold resistance | 1.97 Ohm |
Selection Notes
- Interrupting capability is 35 A at 250 Vac, 50 Hz — confirm the circuit's prospective fault current stays below this.
- Time-delay element rides through motor starting and capacitive inrush without nuisance opening.
- Startup surges of several times rated current are tolerated for a short window.
- Glass body lets you inspect the element after a fault.
- Best kept for lower fault-current circuits where visual diagnosis matters.
- Do not upsize beyond 125 mA to stop nuisance trips — fix the cause instead.
Q&A
Is the S506-V-125-R fast-acting or time-delay?
It is time-delay. It tolerates short inrush surges.
Can the S506-V-125-R be used on a higher fault-current circuit?
No — its interrupting rating is 35 A at 250 Vac, 50 Hz. Choose a part whose breaking capacity exceeds the prospective fault current.
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