CHINT NRT28 Cylindrical Fuse Holder

Name: CHINT NRT28 Cylindrical Fuse Holder
Brand: CHINT
SKU: 1769744568321843200

Brand Name:Chint
Place of Origin:China
Use:LOW VOLTAGE
Model Number:NRT28
Safety Standards:IEC
Breaking Capacity:High
Brand:Chint

Rated Current

Rated Voltage

Fuse Size

Description

Chint NRT28-32 NRT28-32X NRT28-63 NRT28-125 32A 63A 125A 1P 2P 3P Chnt Fuse Holder

Chint NRT28 series cylindrical cap fuse applies to power distribution system with AC 50Hz, rated voltage of 500V, and rated current of 125A, to protect overload and short circuit (it is not recommended but RT36 fuse in capacitor box).

Neon light and resistance comprise the fuse base's fuselink fuse signal device (code “X”).

NRT28 series holder can be used in combination with RT28-32, RT28-63, and RT29-125 “gG” fuse links, “gG” is the general-purpose fuse link with full-range breaking capacity.

Standard: IEC 60269-2.

Additional information

Fuse Size	10×38, 14×51, 22×58
Rated Current	2A, 4A, 6A, 10A, 16A, 20A, 25A, 32A, 40A, 50A, 63A, 80A, 100A, 125A
Rated Voltage	AC 500V

Technical Datasheet & Downloads

📄 Technical Documentation & Product Specifications

Download official engineering datasheets, certified test standards (IEC / UL / CE), wiring diagrams, and dimensional drawings for CHINT NRT28 Cylindrical Fuse Holder.

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Official Technical Datasheet (PDF) Complete electrical ratings, tripping characteristics, dimensions, and compliance specifications.

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2D/3D CAD & Dimensional Drawings STEP, DXF, and PDF CAD drawing files for panel builders and switchgear designers.

Technical FAQ & Selection Guide

💡 Frequently Asked Technical Questions & Selection Guide

Pure engineering specifications, tripping curve parameters, and electrical selection guidance for panel builders and system designers.

Voltage & Load Sizing

How to verify rated operational voltage, frequency, and load duty cycle?

Verify that the nominal line voltage (AC 230V single-phase or 400V/415V/690V three-phase at 50/60Hz, or DC voltage ratings) falls within the continuous maximum operating limits of the device. Check duty cycle ratings (continuous vs intermittent duty) to ensure thermal stability under full load.

Protection & Environment

What ingress protection (IP Rating) and environmental enclosures are recommended?

For clean indoor electrical rooms, standard IP20 modular DIN-rail housings are recommended. For outdoor, industrial washdown, or dusty environments, mount components inside weatherproof enclosures rated IP65/IP66 with UV-resistant polycarbonate or powder-coated steel enclosures equipped with compression cable glands.

Selectivity & Grading

How to ensure upstream and downstream coordination in power distribution boards?

Ensure proper discrimination by grading current thresholds and tripping time delays: upstream devices should have higher current ratings and intentional short-time delays (Class S), allowing downstream branch MCBs to clear localized faults without blacking out the entire facility.

Installation & Mounting

What mounting rails, busbars, and spatial clearances are required?

Components mount on standard symmetrical 35mm DIN rail (EN 60715 / TH35-7.5) or backplate screw fixings. Maintain recommended top/bottom ventilation gaps (typically 30–50mm) to ensure unrestricted air convection, and use standard pin/fork comb busbars to minimize contact resistance and wiring errors.

Conductor & Torque Sizing

What conductor sizes and terminal tightening torques should be applied?

Select copper or aluminum conductor cross-sections complying with IEC 60364-5-52 current-carrying capacity tables based on continuous load. Always use a calibrated torque screwdriver or torque wrench to tighten terminal screws to the manufacturer-specified torque to prevent hot-spot degradation and loose connections.