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Eaton SR-5H-400mA-APH 400 mA 300 Vac Time-Delay Subminiature Fuse
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pEaton SR-5H-400mA-APH — 400 mA, 300 V, time-delay fuse, 100 A at 300 Vac interrupting./p
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Eaton SR-5H-400mA-APH 400 mA 300 Vac Time-Delay Subminiature Fuse
Built by Eaton, the SR-5H-400mA-APH carries 400 mA, uses a time-delay element.
Technical Data
| Parameter | Rating |
|---|---|
| Parameter | Value |
| Orderable part number | SR-5H-400mA-APH (-APH = 1,000 pcs ammo pack, 12.7 mm pitch) |
| Current | 400 mA |
| Interrupting rating | 100 A at 300 Vac |
| Un (rated) | 300 Vac |
| Packaging family | -APH ammo pack / -BKH 200 in polybag / -BK2H 200 long lead |
| Agency | cURus E19180 (JDYX2, JDYX8) - the sub-1 A ratings carry only the UR mark |
| Typical drop | 127 mV at rated current |
| Dissipation at rating | 0.05 W |
| Body / package | Radial leaded thru-hole, plastic cap and base, UL 94V0 |
| Design standard | IEC 60127-3 sheet 4 |
| Characteristic | Time-delay (T), high inrush withstand |
| Melting I2t (typical) | 0.7716 A2s |
| Typical DC cold resistance | 0.285 Ohm |
Selection Notes
- Interrupting capability is 100 A at 300 Vac — 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.
- Do not upsize beyond 400 mA to stop nuisance trips — fix the cause instead.
Typical Applications
Engineers usually specify it for these duties:
- lighting
- surge
- transformer
Part Number and Packing
Order code SR-5H-400mA-APH from Eaton, supplied in Radial leaded thru-hole, plastic cap and base, UL 94V0. Confirm the exact suffix before release.
Q&A
Is the SR-5H-400mA-APH fast-acting or time-delay?
It is time-delay. It tolerates short inrush surges.
Can the SR-5H-400mA-APH be used on a higher fault-current circuit?
No — its interrupting rating is 100 A at 300 Vac. Choose a part whose breaking capacity exceeds the prospective fault current.
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