Zhejiang Hongman Electric Technology Co., Ltd. is one of the most reliable manufacturers and suppliers of 690v ac 63a 14x51mm pv fuse link in China. We are committed to providing high quality customized products made in China with competitive price. Welcome to wholesale bulk cheap 690v ac 63a 14x51mm pv fuse link from our factory.
Product Introduction
The RT18-63 cylindrical ceramic fuse link adopts standard 14×51mm overall dimension, classified as universal gG AC Fuse Link designed for 690V AC photovoltaic and industrial low-voltage circuits. Matched perfectly with RT18B-63 TH35 DIN rail fuse holder, this 14x51mm PV Fuse Link supports plug-and-play quick replacement without extra tools.
Product Parameter
|
Item |
Professional Specification Data |
|
Full Model |
RT18-63 690V AC PV Fuse Link |
|
Overall Dimension |
14mm Dia × 51mm Length (14x51mm PV Fuse Link standard size) |
|
Rated Working Voltage |
AC380 / AC400 / AC500 / AC690V |
|
Rated Breaking Capacity |
AC380/400/500V: 120kA; AC690V: 50kA |
|
Full Current Range In Stock |
0.5A ~ 63A |
|
Rated Max Current |
63A |
|
Utilization Category |
gG (General full-range overcurrent protection) |
|
Tube Material |
High-strength flame retardant sintered ceramic |
|
Arc Extinguishing Medium |
99% purity silica quartz sand filler |
|
Melt Material |
Precision pure copper strip, low power loss & stable conduction |
|
Executive Standard |
IEC60269-2, GB/T 13539.2 |
|
Global Certifications |
CE, ISO9001, RoHS |
|
Matching Holder |
RT18B-63 TH35 DIN fuse base (1P/2P/3P optional) |
|
Mounting Standard |
35mm DIN rail plug-in installation |
|
Applicable Wire Range |
1.5 ~ 50 mm² |
|
Working Environment |
-40℃ ~ +60℃, Pollution Grade 3, Installation Category III, Altitude ≤2000m |
|
Core Application |
Medium-power PV combiner boxes, industrial motor control panels, UPS & frequency converter AC loops |
Product Advantage
Equipped with 99% high-purity arc-extinguishing quartz sand and precision pure copper melt strip, it delivers 120kA breaking capacity at AC500V and 50kA at AC690V. As mainstream AC Fuse Link for medium-power PV string circuits, it maintains ultra-low temperature rise under continuous 63A rated load, and high-temperature sintered explosion-proof ceramic tube effectively isolates high-energy short-circuit arcs inside compact PV distribution cabinets.
Medium-Size 14x51mm PV Fuse Link, Optimized for Medium PV Strings Compared with miniature 10×38 fuses, this 14x51mm PV Fuse Link carries up to 63A rated current, suitable for medium and large PV string branch protection. The standardized outline is fully compatible with universal RT18B-63 fuse base, realizing unified cabinet layout design for batch solar projects.
Ultra-High Breaking AC Fuse Link Ensures PV System Safety As reliable AC Fuse Link for 690V PV circuits, it features 120kA short-circuit interrupt capability under 500V working condition, which can instantly cut surge current caused by PV module mismatch, avoiding permanent damage to inverters and power distribution components. The sealed ceramic shell restrains arc leakage completely during fault conditions.
Production Process & Quality Control System
Packaging, Shipping & After-sales Service
Standard Export Packaging: Fuse link is placed inside a separate inner box, then packed in reinforced shockproof outer export carton for ceramic component protection
Professional After-Sales Service: Complete CE, RoHS official test reports provided for customs clearance and overseas project bidding; 1-year full quality warranty for all RT18-125 fuse links, free electrical selection technical guide for Low Voltage Fuse and PV Fuse system matching
FAQ
Q1: Can this 14x51mm PV Fuse Link be used for 690V medium-power PV combiner circuits?
A1: Yes, this standard AC Fuse Link is rated up to AC690V with max 63A rated current, perfectly matched for medium solar string overload & short-circuit protection.
Q2: What is the breaking capacity of this AC Fuse Link at AC500V working voltage?
A2: This 14x51mm PV Fuse Link reaches 120kA rated short-circuit breaking capacity at AC500V, capable of isolating severe fault surges in low-voltage PV systems.
Q3: Does this AC Fuse Link need current derating for high-altitude solar power plants?
A3: Follow IEC standard: derate working current by 0.5% per 100m above 2000m altitude to prevent overheating of the 14x51mm PV Fuse Link.
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