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- ABB
- NCHM-21C
- Charging Monitoring Unit
- Sweden
- 90 x 36 x 78 mm
- 0.35kg
- 64011332E
- Xiamen, China
- New & In Stock
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We have a 10-year logistics and express cooperation agreement, so our products can be shipped to any place in the world.
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Our products are imported in bulk from the place of origin. Because of the cooperative relationship, our products are all original and 100% new.
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We provide 7*24 hours service to our customers. We will be there whenever you need us.
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All our products are priced very favorably because we have our own warehouse and supply.
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Product Overview: ABB NCHM-21C / 64011332E
Brand
Series
NCHM Series (Miniature Circuit Breakers / Thermal-Magnetic Protection)
Product Description
The ABB NCHM-21C (64011332E) is a miniature thermal-magnetic circuit breaker designed for reliable protection of low-voltage electrical circuits. It safeguards installations against overload and short-circuit events, ensuring both equipment and personnel safety.
The NCHM-21C is suitable for small to medium installations in residential, commercial, and light industrial applications. Its compact design allows for easy integration into distribution boards, control panels, and modular motor circuits.
Engineered for durability, this breaker features precise tripping, low maintenance requirements, and visual indication of operational and fault status. It is designed to provide long-term reliability while meeting international safety standards.
Applications
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Low-voltage electrical distribution boards in residential, commercial, and light industrial environments.
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Protection of small motors, pumps, and fans.
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Control and distribution panels in industrial or commercial installations.
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HVAC systems and auxiliary motor circuits.
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Applications requiring space-saving, reliable thermal-magnetic protection.
Product Advantages
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Dual Protection – Combines thermal overload and magnetic short-circuit protection for maximum safety.
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Compact Design – Optimized for space-limited panels.
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Reliable and Durable – Long operational life and low maintenance.
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Visual Status Indicators – ON/OFF and tripped conditions are clearly displayed.
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Standards Compliance – Meets IEC standards for miniature circuit breakers.
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Flexible Installation – Supports DIN rail and panel mounting.
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Precise Tripping – Accurate response to overload and short-circuit conditions.
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Versatile Use – Suitable for residential, commercial, and light industrial installations.
Technical Parameters
| Parameter | Specification |
|---|---|
| Model | ABB NCHM-21C |
| Part Number | 64011332E |
| Rated Operational Voltage | 230/400 V AC |
| Rated Current | 1–20 A |
| Tripping Characteristic | Class C, thermal-magnetic |
| Number of Poles | 2 |
| Breaking Capacity | 6–10 kA depending on variant |
| Mounting Type | DIN rail / Panel mount |
| Operating Temperature | -25°C to +60°C |
| Degree of Protection | IP20 |
| Dimensions (HxWxD) | 90 x 36 x 78 mm |
| Weight | 0.35 kg |
| Standards Compliance | IEC 60898 / IEC 60947-2 |
Recommended Related Models in NCHM Series
| Model | Rated Current (A) | Poles | Breaking Capacity (kA) | Weight (kg) | Dimensions (HxWxD mm) |
|---|---|---|---|---|---|
| NCHM-10C | 1–10 | 1 | 6 | 0.18 | 85 x 17.5 x 70 |
| NCHM-16C | 6–16 | 2 | 10 | 0.40 | 90 x 35 x 75 |
| NCHM-25C | 16–25 | 2 | 10 | 0.45 | 100 x 36 x 80 |
| NCHM-32C | 20–32 | 2 | 10 | 0.50 | 105 x 36 x 85 |
| NCHM-40C | 32–40 | 2 | 10 | 0.55 | 110 x 36 x 90 |
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 NCHM-21C provide?
A1: Thermal overload and magnetic short-circuit protection for low-voltage circuits.
Q2: What is the rated current range?
A2: 1–20 A.
Q3: How many poles does it have?
A3: 2 poles.
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: 6–10 kA depending on the variant.
Q6: Is it suitable for small motor protection?
A6: Yes, it can protect small motors, pumps, and fans.
Q7: What is the operating temperature range?
A7: -25°C to +60°C.
Q8: Does it have visual trip indicators?
A8: Yes, ON/OFF and tripped status are clearly visible.
Q9: Is it compliant with international standards?
A9: Yes, it meets IEC 60898 and IEC 60947-2.
Q10: Where is this breaker typically used?
A10: Residential, commercial, and light industrial installations requiring space-saving, reliable thermal-magnetic protection.