R3‑53 Bakelite Panel Fuse Holder 20A 250V for 6x30mm 3AG Fuse
R3‑53 M15×1.0 threaded bakelite panel mount fuse holder 20A 250V for 6×30mm fuse. UL94‑V0 phenolic base, high heat‑resistant, factory wholesale.
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R3‑53 M15×1.0 Threaded Bakelite Panel‑Mount Fuse Holder 20A 250V for 6×30mm 3AG Fuse Tube
Product Overview
The R3-53 is a fuse holder designed as an M15×1.0 threaded bakelite panel mount for 6×30mm 3AG fuses in power supplies and equipment. This holder supports 20A at 250V with UL94-V0 phenolic base.
,R3‑53 panel‑mount fuse holder is a threaded chassis‑mount socket constructed with high‑heat‑resistant Bakelite (Phenolic resin UL‑94V‑0) base, specially built for standard 6×30 mm (3AG) glass or ceramic fuse tubes. Electrical rating reaches 20A continuous current at 250V AC /125V DC. It adopts M15×1.0 thread locking nut installation and cross‑slot screw cap design for fuse replacement.
0.8 mm thick phosphor‑bronze terminals guarantee stable conductivity. Electrical performance includes 3000 VAC dielectric withstand voltage, contact resistance below 5 mΩ and insulation resistance＞100 MΩ, breaking capacity up to 50A for short‑circuit fault protection. Different from PBT‑based R3‑55A/R3‑55B series, bakelite material delivers superior high‑temperature stability for harsh‑temperature equipment. Manufactured by Dongguan GongFu Electronic (EssFuse), R3‑53 supports bulk OEM & ODM procurement for industrial electronic manufacturers.
Key Features & Benefits
- ✅ Fits 6×30 mm / 3AG fuse tube, rated 20A,250V AC /125V DC, breaking current up to 50A → universal compatible for standard 3AG cartridge fuses for over‑current & short‑circuit protection
- ✅ Bakelite(Phenolic resin) UL‑94V‑0 housing → outstanding high‑temperature resistance, anti‑deformation under continuous heat load, ideal for high‑heat equipment environmentAlibaba.co…
- ✅ M15×1.0 thread & nut‑locking panel installation, cross‑slot screw cap → simple panel assembly; screwdriver‑operated cap for convenient fuse swap without disassembling device
- ✅ 0.8 mm phosphor‑bronze terminals → excellent conductivity, anti‑oxidation, keep low contact resistance＜5 mΩ under long‑time working
- ✅ Superior electrical safety: 3000 VAC withstand voltage, insulation resistance＞100 MΩ → reliable isolation, reduce electric‑shock risk
- ✅ Strict factory quality control & stable mass‑production → suitable for large‑volume OEM electronic assembly projects
Technical Specifications
| Item | Parameter |
|---|---|
| Model | R3‑53 |
| Rated Current | 20 A |
| Rated Voltage | 250V AC /125V DC |
| Compatible Fuse Size | 6 × 30 mm (3AG) fuse tube |
| Breaking Current | 50 A |
| Housing Base | Bakelite(Phenolic resin) UL‑94 V‑0 |
| Terminal Material | 0.8 mm Phosphor Bronze |
| Mounting Thread | M15×1.0 |
| Panel Cut‑out Diameter | Φ15.0 mm |
| Withstand Voltage | 3000 VAC |
| Contact Resistance | ＜5 mΩ |
| Insulation Resistance | ＞100 MΩ |
| Cap Style | Cross‑slot screw cap |
| Note | Subject to product upgrade without prior notice |
R3‑53 VS R3‑55A / R3‑55B Material Difference
All three models accept 6×30 mm /3AG fuses and share identical electrical parameters. Core differences lie on housing material, thread size & panel cut‑out dimension:
| Model | Housing Material | Mounting Thread | Panel Cut‑out | Best‑for Scenario |
|---|---|---|---|---|
| R3‑53 | Bakelite(Phenolic, high‑temp resistant) | M15×1.0 | Φ15.0 mm | High‑temperature cabinet & industrial equipment |
| R3‑55A | PBT UL‑94V‑0 | Special thread | Φ19.8 mm | Thin‑panel application (0.75‑3.5 mm) |
| R3‑55B | PBT UL‑94V‑0 | Special thread | Φ19.8 mm | Thick‑panel application (0.5‑7.0 mm) |
Internal link text：👉 R3‑53 Bakelite Panel Fuse Holder 20A 250V for 6x30mm 3AG Fuse
Product Dimension Drawing
Overall length:45.3 mm; Mounting thread M15×1.0; Recommended panel cut‑out hole diameter Φ15.0 mm. Please refer to dimension drawing for complete mechanical tolerances.
Embed your R3‑53 installation dimension drawing here
Application Scenarios
- High‑temperature industrial control cabinets
- Power supply & charging equipment
- Test & measuring instruments
- Automation control units
- Laboratory electronic devices
- OEM projects requiring bakelite high‑heat‑resistant fuse socket
Frequently Asked Questions
1: What fuse tube works for R3‑53 fuse holder?
Designed for standard 6×30 mm / 3AG glass or ceramic cartridge fuses.
2: What panel hole size is required for installation?
Required panel cut‑out diameter: 15.0 mm, mounting thread specification M15×1.0.
3: Why choose bakelite R3‑53 instead of PBT R3‑55 series?
Bakelite phenolic resin offers better high‑temperature resistance. Choose R3‑53 if your equipment runs under continuous high‑temperature environment.
4: Can R3‑53 work under DC voltage?
Yes, rated for 250V AC and 125V DC, max continuous operating current is 20A.
5: Can you provide bulk wholesale and OEM service?
Yes, we are original manufacturer. Contact our sales for MOQ, unit price and customization options.
