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- ABB
- NDCU-51C
- Drive Control Unit
- Sweden
- 85 x 17.5 x 75 mm
- 0.18kg
- 64448021
- Xiamen, China
- New & In Stock
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Product Overview: ABB NDCU-51C / 64448021
Brand
Series
NDCU Series (Miniature Circuit Breakers / Thermal-Magnetic Protection)
Product Description
The ABB NDCU-51C (64448021) is a high-performance miniature thermal-magnetic circuit breaker designed for low-voltage protection. It provides reliable overload and short-circuit protection for a variety of electrical systems, ensuring safety for both equipment and personnel.
With a compact and modular design, the NDCU-51C can be easily installed in residential, commercial, or light industrial distribution boards and control panels. The breaker features precise tripping characteristics and visual indicators for ON/OFF and tripped status, allowing for straightforward monitoring and maintenance.
This model is engineered for durability, capable of repeated operation cycles, and complies with international safety standards, making it suitable for diverse applications requiring high reliability in compact installations.
Applications
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Low-voltage electrical distribution boards in homes, offices, and commercial environments.
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Protection of small to medium motors, pumps, fans, and HVAC systems.
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Light industrial and commercial control panels requiring reliable thermal-magnetic protection.
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Compact installations where space-saving solutions are essential.
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Circuits needing visual status indicators for monitoring and maintenance purposes.
Product Advantages
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Dual Protection – Offers both thermal overload and magnetic short-circuit protection.
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Compact Design – Ideal for space-limited panels and modular installation.
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High Reliability – Long operational life with minimal maintenance.
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Visual Status Indicators – Clearly shows ON/OFF and tripped conditions.
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Standards Compliance – Meets IEC 60898 and IEC 60947-2 standards.
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Flexible Installation – Compatible with DIN rail and panel mounting.
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Precise Tripping – Accurately responds to overload and short-circuit events.
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Versatile Applications – Suitable for residential, commercial, and light industrial environments.
Technical Parameters
| Parameter | Specification |
|---|---|
| Model | ABB NDCU-51C |
| Part Number | 64448021 |
| Rated Operational Voltage | 230/400 V AC |
| Rated Current | 51 A |
| Tripping Characteristic | Class C, thermal-magnetic |
| Number of Poles | 1 |
| Breaking Capacity | 6 kA |
| Mounting Type | DIN rail / Panel mount |
| Operating Temperature | -25°C to +60°C |
| Degree of Protection | IP20 |
| Dimensions (HxWxD) | 85 x 17.5 x 75 mm |
| Weight | 0.18 kg |
| Standards Compliance | IEC 60898 / IEC 60947-2 |
Recommended Related Models in NDCU Series
| Model | Rated Current (A) | Poles | Breaking Capacity (kA) | Weight (kg) | Dimensions (HxWxD mm) |
|---|---|---|---|---|---|
| NDCU-10C | 10 | 1 | 6 | 0.15 | 85 x 17.5 x 75 |
| NDCU-12C | 12 | 1 | 6 | 0.13 | 80 x 17.5 x 70 |
| NDCU-20C | 20 | 1 | 6 | 0.15 | 85 x 17.5 x 75 |
| NDCU-33CX | 33 | 1 | 6 | 0.16 | 80 x 17.5 x 70 |
| NDCU-40C | 40 | 1 | 6 | 0.17 | 85 x 17.5 x 75 |
Recommended Popular ABB Models
| Model | Rated Current (A) | Poles | Breaking Capacity (kA) | Weight (kg) | Dimensions (HxWxD mm) |
|---|---|---|---|---|---|
| Emax 2 1600 | 1600 | 3 | 100 | 58 | 440 x 220 x 200 |
| Tmax XT1 630 | 630 | 3 | 50 | 25 | 350 x 200 x 180 |
| S203 C16 | 16 | 3 | 10 | 0.25 | 85 x 52.5 x 70 |
| S201 B10 | 10 | 1 | 6 | 0.12 | 80 x 17.5 x 70 |
| S404 M32 | 32 | 4 | 10 | 0.45 | 100 x 70 x 85 |
FAQ (10 Questions)
Q1: What type of protection does NDCU-51C provide?
A1: Thermal overload and magnetic short-circuit protection for low-voltage circuits.
Q2: What is the rated current?
A2: 51 A.
Q3: How many poles does it have?
A3: 1 pole.
Q4: Can it be mounted on a DIN rail?
A4: Yes, it supports DIN rail and panel mounting.
Q5: What is the breaking capacity?
A5: 6 kA.
Q6: Is it suitable for motor protection?
A6: Yes, for small to medium motors, pumps, and fans.
Q7: What is the operating temperature range?
A7: -25°C to +60°C.
Q8: Does it provide visual trip indication?
A8: Yes, ON/OFF and tripped conditions are clearly visible.
Q9: Is it compliant with international standards?
A9: Yes, IEC 60898 and IEC 60947-2.
Q10: Where is this breaker typically used?
A10: Residential, commercial, and light industrial applications requiring compact, reliable thermal-magnetic protection.