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.
لمحة سريعة عن المنتج (للرجوع السريع)
- 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.
تحديد
| نموذج المنتج | R3-38 inline fuse holder |
|---|---|
| Fuse size | 10 x 38 mm glass / ceramic tube |
| التقييم الحالي | 1A – 40A |
| تصنيف الجهد | 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 |
الميزات الرئيسية
- 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.
كيفية الطلب والتركيب
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)
| الأبعاد | القيمة (مم) | ملحوظات |
|---|---|---|
| الطول الإجمالي | 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.
التطبيقات
- 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
