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NDBU Series (Molded Case Circuit Breakers / Thermal-Magnetic Protection)
The ABB NDBU-95C (64008366D / 3AFE64008366) is a high-performance molded case circuit breaker (MCCB) designed for low-voltage power distribution systems. It provides reliable protection against overloads, short circuits, and fault currents while maintaining safety for both equipment and personnel.
This breaker is ideal for industrial and commercial installations where medium to high power circuits need secure protection. It features thermal-magnetic tripping with adjustable current settings to provide precise protection for a wide range of applications. The modular design allows integration into switchboards, control panels, and motor distribution centers.
The NDBU-95C is built for durability, long-term operation, and minimal maintenance. Its robust construction and clear visual status indicators make it suitable for both frequent operational and emergency conditions.
Industrial low-voltage power distribution and control systems.
Protection of medium-voltage motors, pumps, and HVAC equipment.
Commercial buildings and facilities with high power electrical loads.
Motor control centers and switchboards requiring adjustable thermal-magnetic protection.
Industrial process lines requiring precise overcurrent and short-circuit protection.
Dual Protection – Combines thermal overload and magnetic short-circuit protection.
High Current Capacity – Suitable for medium-power distribution circuits.
Adjustable Trip Settings – Enables precise customization for different load requirements.
Robust Design – Long operational life and durable mechanical construction.
Visual Status Indicators – Clear ON/OFF and tripped state indications.
Standards Compliance – Conforms to international IEC standards for MCCBs.
Flexible Installation – Compatible with panel and DIN rail mounting systems.
Low Maintenance – Designed for repeated operations without frequent servicing.
| Parameter | Specification |
|---|---|
| Model | ABB NDBU-95C |
| Part Number | 64008366D / 3AFE64008366 |
| Rated Operational Voltage | 400 V AC |
| Rated Current | 95 A |
| Tripping Characteristic | Class C, thermal-magnetic |
| Number of Poles | 3 |
| Breaking Capacity | 25 kA |
| Mounting Type | Panel / DIN rail |
| Operating Temperature | -25°C to +60°C |
| Degree of Protection | IP40 |
| Dimensions (HxWxD) | 150 x 110 x 80 mm |
| Weight | 2.5 kg |
| Standards Compliance | IEC 60947-2 |
| Model | Rated Current (A) | Poles | Breaking Capacity (kA) | Weight (kg) | Dimensions (HxWxD mm) |
|---|---|---|---|---|---|
| NDBU-63C | 63 | 3 | 25 | 2.0 | 140 x 100 x 75 |
| NDBU-125C | 125 | 3 | 36 | 3.0 | 160 x 120 x 85 |
| NDBU-160C | 160 | 3 | 36 | 3.2 | 165 x 125 x 90 |
| NDBU-80C | 80 | 3 | 25 | 2.2 | 145 x 105 x 78 |
| NDBU-100C | 100 | 3 | 36 | 2.6 | 150 x 110 x 80 |
| 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 |
Q1: What type of protection does NDBU-95C provide?
A1: Thermal overload and magnetic short-circuit protection for medium-power low-voltage circuits.
Q2: What is the rated current?
A2: 95 A.
Q3: How many poles does it have?
A3: 3 poles.
Q4: Can the trip settings be adjusted?
A4: Yes, it allows adjustable thermal-magnetic trip settings for different load requirements.
Q5: What is the breaking capacity?
A5: 25 kA.
Q6: Is it suitable for industrial motor protection?
A6: Yes, ideal for medium-power motors, pumps, and HVAC equipment.
Q7: What is the operating temperature range?
A7: -25°C to +60°C.
Q8: Does it provide visual status indication?
A8: Yes, ON/OFF and tripped states are clearly indicated.
Q9: Which standards does it comply with?
A9: IEC 60947-2.
Q10: Where is this breaker typically used?
A10: Industrial power distribution, motor control centers, and commercial buildings with medium-power loads.