RT18-32 10×38mm Cylindrical Cap Fuse with DIN-Rail Holder

Product Overview

The RT18-32 series is a filled cylindrical cap fuse system with modular DIN-rail mount holder, widely used for overload and short-circuit protection in low-voltage AC distribution systems. It consists of a thermoplastic fuse base and replaceable 10×38mm cartridge fuse links, enabling easy and safe fuse replacement without tools.

With a rated current range of 2A to 32A and a breaking capacity up to 100kA, it delivers reliable protection for general distribution circuits. The gG/gL utilization category covers both sustained overload and high short-circuit current conditions. Optional LED indicator version (RT18-32X) provides visual blown-fuse status for quick fault diagnosis. Standard 35mm DIN rail mounting and compact 18mm per pole design make it ideal for integration into distribution boards and control panels. Compliant with IEC 60269-2 international standard, it is universally applied in residential, commercial and light industrial power distribution systems.

Key Product Features

✅ 10×38mm Standard Cylindrical Fuse Link Universal 10×38mm cartridge fuse size, interchangeable with mainstream brands. Filled with quartz sand for effective arc quenching, ensures safe and reliable short-circuit interruption.

✅ 100kA High Breaking Capacity Rated breaking capacity up to 100kA at rated voltage, safely clears short-circuit faults within milliseconds, protects downstream equipment and prevents fire hazards caused by overcurrent.

✅ gG/gL General Purpose Utilization Full-range general purpose fuse, provides protection against both low-value sustained overload and high-value short-circuit current, suitable for most distribution circuit applications.

✅ Modular DIN-Rail Mount Base 18mm width per pole, fits standard 35mm DIN rail. Snap-on installation, no complex fixing required. Compact structure saves internal space of distribution cabinets.

✅ Optional Blown-Fuse Indicator RT18-32X version equipped with integrated LED indicator. The indicator lights up automatically when the fuse link blows, enabling fast visual fault location without testing.

✅ Flame-Retardant Insulating Housing High-grade flame-retardant engineering plastic base, excellent dielectric strength, heat resistance and mechanical toughness. Stable performance in long-term energized distribution environment.

✅ IEC 60269-2 International Standard Manufactured and tested in full compliance with IEC 60269-2 and GB/T 13539.2 standards, CE certified. Meets global low-voltage distribution safety requirements.

Technical Specifications

表格

Application Scenarios

• Low-voltage distribution boards and consumer units overload & short-circuit protection
• Industrial control panels and machinery equipment circuit protection
• Lighting, socket and general branch circuit protection
• PV combiner box and renewable energy distribution systems
• Commercial building and infrastructure power distribution systems
• Control transformer and auxiliary circuit protection

Our Advantages

1. Full specification stock availability Complete current ratings and pole configurations in stock, support mixed batch orders for panel builders, with fast bulk shipment available.
2. Stable and reliable breaking performance Precision manufactured fuse elements with consistent melting characteristics, accurate tripping performance, avoid premature failure and failure to break under fault conditions.
3. Strict factory quality inspection Each batch undergoes overload test, short-circuit breaking test and dielectric withstand test before delivery to ensure reliable on-site performance.
4. Universal compatible dimensions Standard mounting dimensions and fuse link size, fully compatible with mainstream RT18 series fuses on the market. Can be directly replaced without cabinet modification.
5. Complete technical documentation support Provide dimension drawings, selection guides and product datasheets to support project design and tender bidding. Fast overseas technical response.

Custom Solution

We provide project-oriented custom solutions for RT18-32 fuse assemblies:

• OEM Brand Customization: Custom silk-screen logo and model marking on fuse base for branded resale.
• Specification Customization: Custom current ratings, pole configurations and indicator options according to project requirements.
• Fuse Link Package: Supply matched 10×38mm fuse links in bulk or pre-assembled in holders according to customer BOM.
• Export-grade Custom Packing: Neutral carton, customer-branded packaging, seaworthy reinforced packing for long-distance sea transportation.
• Large-order Priority Production: Priority production scheduling for large-volume project orders to guarantee delivery lead time.

Share your required current rating, pole configuration and indicator requirement, our engineers will recommend the most suitable fuse solution within 24 working hours.

FAQ

Q1: What is the difference between RT18-32 and RT18-32X?

A: RT18-32 is the standard version without indicator. RT18-32X is equipped with an integrated LED indicator that lights up when the fuse link blows, for quick visual fault identification.

Q2: What is the breaking capacity of RT18-32 fuse?

A: The rated short-circuit breaking capacity is 100kA at rated voltage, which meets the protection requirements of most low-voltage distribution systems.

Q3: Are the fuse links interchangeable with other brands?

A: Yes, it uses standard 10×38mm cylindrical fuse links, which are interchangeable with all mainstream brands of 10×38mm cartridge fuses.

Q4: Is this fuse DIN-rail mountable?

A: Yes, the fuse base fits standard 35mm DIN rail, which is the universal mounting standard for modular low-voltage distribution components.

Q5: What does gG/gL mean?

A: gG/gL is the general purpose utilization category for fuses, meaning it provides full-range protection for both overload currents and short-circuit currents in general distribution circuits.

Q6: Do you support OEM private label service for distributors?

A: Yes, we support custom logo and marking printing on the fuse base, with a certain MOQ applied for OEM service.

Q7: What pole options are available for this series?

A: Standard options include 1P, 2P, 3P and 4P to match different types of distribution circuit requirements.

Package Content

1 × RT18-32 Fuse Base (with fuse link pre-installed or separately packed as required)