R3-38 10×38 Inline Fuse Holder — 1A to 40A, 500V/1000V AC/DC
Screw-type inline fuse holder for 10x38mm glass and ceramic fuses. Bakelite body, brass hardware, carbon steel spring.
Because higher-voltage DC and AC circuits need fuses larger than 5×20, engineers choose the R3-38 for 10×38 tube fuses. In particular, it covers 1A to 40A at 500V/1000V. Moreover, its bakelite body resists heat. As a result, it works from -20°C up to 125°C.
ข้อมูลผลิตภัณฑ์โดยย่อ (สำหรับการอ้างอิงอย่างรวดเร็ว)
- Model: R3-38 inline fuse holder; for 10x38mm glass or ceramic fuses.
- Ratings: 1A–40A; 500V / 1000V AC/DC.
- Materials: bakelite body, brass hardware, carbon steel spring.
- Lead wires: gauge matched to current (specify when ordering).
- Operating temperature: -20°C to 125°C.
- Body: 74.5 mm long; head Ø18 mm.
ข้อกำหนด
| Product model | R3-38 inline fuse holder |
|---|---|
| Fuse size | 10 x 38 mm glass / ceramic tube |
| การจัดอันดับปัจจุบัน | 1A – 40A |
| ระดับแรงดันไฟฟ้า | 500V / 1000V AC / DC |
| Body material | Bakelite (phenolic) |
| Hardware | Brass |
| Spring | Carbon steel |
| Lead wires | Gauge matched to current |
| Operating temp. | -20°C to 125°C |
คุณสมบัติหลัก
- 10×38 compatibility: accepts larger glass and ceramic tube fuses.
- Up to 40A: covers heavier loads than 5×20 holders.
- 500V / 1000V rating: suits higher-voltage AC and DC circuits.
- Heat-resistant body: bakelite handles up to 125°C.
- Screw cap: fast fuse swaps by hand.
Why it suits higher-voltage power circuits
Because 10×38 fuses handle more voltage and current than 5×20, the R3-38 fits mid-power AC/DC equipment. Consequently, design engineers use it in inverters, servo drives and industrial control. For example, a 20A fuse protects a 48V DC control bus. However, you must match the lead wire gauge to the fuse rating. In addition, the brass hardware stays conductive over years of cycling.
วิธีการสั่งซื้อและติดตั้ง
First, choose a 10×38 fuse whose rating matches your load. Next, specify the lead wire gauge that suits the current. Then thread the holder in-line on the hot side. Finally, unscrew the cap, insert the fuse and tighten by hand. If you need a specific lead length, simply state it when ordering.
Mechanical Dimensions (mm, per factory drawing)
| มิติ | ค่า (มม.) | หมายเหตุ |
|---|---|---|
| Overall length | 74.50 | End-to-end body length |
| Head diameter | Ø18.00 | Screw cap / head OD |
| Center hole | Ø8.60 | Fuse entry bore |
| Cap section | 14.70 | Threaded cap length |
| Body section | 16.80 | Shoulder section length |
Dimensions per manufacturer drawing and subject to change without notice. Verify before production.
แอปพลิเคชัน
- Industrial AC/DC power supplies up to 1000V
- Servo drives, inverters and motor control input protection
- Photovoltaic and DC bus branch protection up to 40A
- Medical and lab equipment internal fusing
- Heavy-duty control panels and machinery
