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Eaton SR-5H-4A-APH 4 A 300 Vac Time-Delay Subminiature Fuse
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pEaton SR-5H-4A-APH — 4 A, 300 V, time-delay fuse, 100 A at 300 Vac interrupting./p
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Eaton SR-5H-4A-APH 4 A 300 Vac Time-Delay Subminiature Fuse
Eaton SR-5H-4A-APH 4 A 300 Vac Time-Delay Subminiature Fuse belongs to the Eaton range. It carries 4 A, uses a time-delay element.
Technical Data
| Parameter | Rating |
|---|---|
| Parameter | Value |
| Orderable part number | SR-5H-4A-APH (-APH = 1,000 pcs ammo pack, 12.7 mm pitch) |
| Typical melting I2t | 80 A2s |
| Characteristic | Time-delay (T), high inrush withstand |
| Typical cold resistance | 0.013 Ohm |
| Typical voltage drop | 65 mV at rated current |
| Voltage | 300 Vac |
| Agency | cURus E19180 (JDYX2, JDYX8); VDE 40020842; SEMKO 1414025; CCC 2009010207369246; EK SU05011-9006; PSE JET1641-31007-1006 |
| Body | Radial leaded thru-hole, plastic cap and base, UL 94V0 |
| Packaging family | -APH ammo pack / -BKH 200 in polybag / -BK2H 200 long lead |
| Current rating | 4 A |
| Interrupting rating | 100 A at 300 Vac |
| Design standard | IEC 60127-3 sheet 4 |
| Dissipated power at rating | 0.26 W |
Design 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 4 A to stop nuisance trips — fix the cause instead.
Where It Is Used
Typical places this fuse turns up:
- transformer
Ordering Details
Order code SR-5H-4A-APH from Eaton, supplied in -APH ammo pack / -BKH 200 in polybag / -BK2H 200 long lead. Confirm the exact suffix before release.
Common Questions
Is the SR-5H-4A-APH fast-acting or time-delay?
It is time-delay. It tolerates short inrush surges.
Can the SR-5H-4A-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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