المقاولين,قاطع الدائرة,العاكس للطاقة الشمسية,عداد كهرباء,البطاريات الشمسية
| الجزء النموذجي | وصف |
| ر.ت | Filled cartridge tubular fuse (national standard code) |
| 28 | Design serial number |
| ن | New base, differentiated from old-type RT28 base |
| 32 | Base rated current 32A (fuse link applicable range: 2-32أ) |
| /20أ | Matched fuse link rated current 20A |
- Main Specification Parameters
2.1 Base (RT28N-32) حدود
| المعلمة | قيمة |
| الجهد المقنن | AC 500V |
| التصنيف الحالي | 32أ |
| Applicable Fuse Link Size | 10×38mm (cylindrical ceramic fuse link) |
| نوع التركيب | تركيب السكك الحديدية DIN |
| رقم القطب | 1P/2P/3P optional |
| Indicator Device | Optional indicator type (شفرة “X”, neon lamp + resistor assembly) |
| فئة الحماية | IP20 |
| المعيار المطبق | اللجنة الانتخابية المستقلة 60269-2 |
2.2 Fuse Link (RT28-32/20A) حدود
| المعلمة | قيمة |
| التصنيف الحالي | 20أ |
| Utilization Category | ز.ج (full-range breaking capacity, for power distribution protection) |
| الجهد المقنن | AC 500V |
| كسر القدرة | 100ال (AC 500V) |
| Dimension | 10×38mm (ceramic material) |
| Equivalent Industry Model | RO15-20A |
- طلب & مبدأ العمل
نطاق التطبيق: Used in distribution circuits with AC 45Hz~62Hz, rated voltage up to 500V and rated current up to 32A, serving as overload and short-circuit protection device.
مبدأ العمل: When circuit overload or short circuit occurs, the melt inside the fuse link heats up and melts, cutting off the circuit to protect electrical equipment from damage.
ملحوظات: Not recommended for capacitor cabinets; replace with RT36 series if used for capacitor cabinets.
- Accessory List
| Accessory Type | وصف |
| Fuse Link | RT28-32/20A (10×38mm ceramic fuse link) |
| Indicator Assembly | Optional neon lamp + resistor kit (indicator model: RT28N-32X) |
| Mounting Fittings | Rail buckle (fits 35mm standard DIN rail) |
| Fixing Screws | For base installation and fastening |
- Competitor & Cross-Brand Equivalent
| ماركة | Equivalent Model | الفرق الرئيسي |
| شنايدر | NH00 gG 20A + matching base | Breaking capacity up to 120kA, higher price |
| ايه بي بي | OT 20 gG 10×38 + base | Same dimension, 100كا كسر القدرة, فعالة من حيث التكلفة |
| لذيذ | RT28N-32/20A | Same parameters as Chint, slightly lower price, قابلة للتبديل بالكامل |
| سيمنز | 3NE1 820-0 + base | 100كا كسر القدرة, مع المؤشر, higher price |
- اختيار النقاط الرئيسية & الحلول البديلة
اختيار النقاط الرئيسية
- المطابقة الحالية: Fuse link rated current shall be 1.1~1.5 times the rated current of protected equipment.
- كسر القدرة: Ensure fuse breaking capacity ≥ circuit prospective short-circuit current.
- Dimension Matching: RT28N-32 base only fits 10×38mm fuse links; mixed use of other sizes is prohibited.
- اختيار القطب: Select 1P (مرحلة واحدة), 2ص (single-phase double-pole) or 3P (ثلاث مراحل) according to circuit phase.
- Indicator Requirement: Choose indicator type (RT28N-32X) if blown fuse indication is needed.
الحلول البديلة
- Upgraded Same Series: RT28N-63X (applicable for fuse links below 63A, AC 690V)
- Fast Fuse: RT36 series (for special occasions such as capacitor cabinets)
- Circuit Breaker Replacement: DZ47 series miniature circuit breaker (reusable, with overload and short-circuit protection)
- تثبيت & Maintenance Guidelines
- Verify matching model of base and fuse link before installation; check fuse link for damage.
- Fasten the rail buckle during DIN rail mounting to avoid poor contact caused by looseness.
- Tighten terminals during wiring; conductor cross-section shall meet current requirement (2.5-4mm² copper wire recommended for 20A).
- Inspect fuse status regularly; lit indicator on indicator-type model means the fuse link is blown and shall be replaced timely.
- Cut off power supply and use insulated tools when replacing fuse link to avoid electric shock risk.
Chint Cylindrical Fuse Base + Fuse Link Complete Model List
- قاعدة تسمية النموذج
Base Model: RT28N-□(X) □P
ر.ت: Filled cartridge tubular fuse
28: Design serial number
ن: New type base
□: Base rated current (32/63)
X: With blown fuse indicator (خياري)
□P: Pole number (1ف/2ف/3ف)
Fuse Link Model: RT28-□/△A (industry equivalent: RO15 series)
□: Matched base rated current (32/63)
△: Fuse link rated current (2-32A/2-63A)
ز.ج: Full-range breaking capacity, الغرض العام
- Complete Base Model List
| Base Model | التصنيف الحالي | رقم القطب | With Indicator | Applicable Fuse Link | نوع التركيب | فئة الحماية |
| RT28N-32 1P | 32أ | 1ص | لا | RT28-32 series (10×38mm) | دين السكك الحديدية | IP20 |
| RT28N-32 2P | 32أ | 2ص | لا | RT28-32 series (10×38mm) | دين السكك الحديدية | IP20 |
| RT28N-32 3P | 32أ | 3ص | لا | RT28-32 series (10×38mm) | دين السكك الحديدية | IP20 |
| RT28N-32X 1P | 32أ | 1ص | نعم (neon lamp+resistor) | RT28-32 series (10×38mm) | دين السكك الحديدية | IP20 |
| RT28N-32X 2P | 32أ | 2ص | نعم (neon lamp+resistor) | RT28-32 series (10×38mm) | دين السكك الحديدية | IP20 |
| RT28N-32X 3P | 32أ | 3ص | نعم (neon lamp+resistor) | RT28-32 series (10×38mm) | دين السكك الحديدية | IP20 |
| RT28N-63 1P | 63أ | 1ص | لا | RT28-63 series (14×51mm) | دين السكك الحديدية | IP20 |
| RT28N-63 2P | 63أ | 2ص | لا | RT28-63 series (14×51mm) | دين السكك الحديدية | IP20 |
| RT28N-63 3P | 63أ | 3ص | لا | RT28-63 series (14×51mm) | دين السكك الحديدية | IP20 |
| RT28N-63X 1P | 63أ | 1ص | نعم (neon lamp+resistor) | RT28-63 series (14×51mm) | دين السكك الحديدية | IP20 |
| RT28N-63X 2P | 63أ | 2ص | نعم (neon lamp+resistor) | RT28-63 series (14×51mm) | دين السكك الحديدية | IP20 |
| RT28N-63X 3P | 63أ | 3ص | نعم (neon lamp+resistor) | RT28-63 series (14×51mm) | دين السكك الحديدية | IP20 |
- Complete Fuse Link Model List (for RT28N Base)
3.1 RT28-32 Series Fuse Link (for 32A Base, 10×38mm Ceramic)
| Fuse Link Model | التصنيف الحالي | Equivalent Model | كسر القدرة | الجهد المقنن |
| RT28-32/2A | 2أ | RO15-2A | 100ال(AC 500V) | AC 500V |
| RT28-32/4A | 4أ | RO15-4A | 100ال(AC 500V) | AC 500V |
| RT28-32/6A | 6أ | RO15-6A | 100ال(AC 500V) | AC 500V |
| RT28-32/10A | 10أ | RO15-10A | 100ال(AC 500V) | AC 500V |
| RT28-32/16A | 16أ | RO15-16A | 100ال(AC 500V) | AC 500V |
| RT28-32/20A | 20أ | RO15-20A | 100ال(AC 500V) | AC 500V |
| RT28-32/25A | 25أ | RO15-25A | 100ال(AC 500V) | AC 500V |
| RT28-32/32A | 32أ | RO15-32A | 100ال(AC 500V) | AC 500V |
3.2 RT28-63 Series Fuse Link (for 63A Base, 14×51mm Ceramic)
| Fuse Link Model | التصنيف الحالي | Equivalent Model | كسر القدرة | الجهد المقنن |
| RT28-63/2A | 2أ | RO16-2A | 100ال(AC 500V) | AC 500V |
| RT28-63/4A | 4أ | RO16-4A | 100ال(AC 500V) | AC 500V |
| RT28-63/6A | 6أ | RO16-6A | 100ال(AC 500V) | AC 500V |
| RT28-63/10A | 10أ | RO16-10A | 100ال(AC 500V) | AC 500V |
| RT28-63/16A | 16أ | RO16-16A | 100ال(AC 500V) | AC 500V |
| RT28-63/20A | 20أ | RO16-20A | 100ال(AC 500V) | AC 500V |
| RT28-63/25A | 25أ | RO16-25A | 100ال(AC 500V) | AC 500V |
| RT28-63/32A | 32أ | RO16-32A | 100ال(AC 500V) | AC 500V |
| RT28-63/40A | 40أ | RO16-40A | 100ال(AC 500V) | AC 500V |
| RT28-63/50A | 50أ | RO16-50A | 100ال(AC 500V) | AC 500V |
| RT28-63/63A | 63أ | RO16-63A | 100ال(AC 500V) | AC 500V |
- Typical Combination Model Examples
| Complete Combination Model | Base Model | Fuse Link Model | سيناريو التطبيق |
| RT28N-32 1P + RT28-32/16A | RT28N-32 1P | RT28-32/16A | Single-phase 220V circuit, 16A load protection |
| RT28N-32X 2P + RT28-32/20A | RT28N-32X 2P | RT28-32/20A | Single-phase 2P circuit, 20A load protection with blown indicator |
| RT28N-32 3P + RT28-32/32A | RT28N-32 3P | RT28-32/32A | Three-phase 380V circuit, 32A load protection |
| RT28N-63X 3P + RT28-63/50A | RT28N-63X 3P | RT28-63/50A | Three-phase 380V circuit, 50A load protection with blown indicator |
- اختيار & ملاحظات التطبيق
- Dimension Matching: RT28-32 series (10×38mm) only fits RT28N-32 base; RT28-63 series (14×51mm) only fits RT28N-63 base.
- اختيار القطب: Choose 1P/2P for single-phase circuits, 3P for three-phase circuits.
- Indicator Requirement: Select X-type with indicator if fuse blown alert is required.
- Current Selection: Fuse rated current shall be 1.1~1.5 times the rated current of protected equipment.
- Special Application: Not suitable for capacitor cabinets; adopt RT36 series as alternative.
