Description
Cost-effective single pole 40 amp miniature circuit breaker is a protective electrical switch designed to disconnect a circuit in case of faults, such as overloads or short circuits. This mini MCB breaker ensures the safety of conductors by preventing excessive current flow that could cause overheating or damage.
Single Pole MCB Breaker Information
- Rated Current: 40 amp
- Rated Voltage: 230/400V AC, 50Hz
- Number of poles: single pole
- 6 kA rated short-circuit breaking capacity
- Compliant with IEC standard
- C curve trip characteristic
- With overload protection and short circuit protection function
Technical Data
| Model | ATO-NB8-631PC40 | |
| Rated Current | 40A | |
| Rated Voltage | 230/400V | |
| Frequency | 50Hz | |
| Number of Poles | 1P | |
| Mechanical Life | 20000 Times | |
| Electrical Life | 10000 Times | |
| Rated Short-Circuit Breaking Capacity | 6000A | |
| Operating Short-Circuit Breaking Capacity | 6000A | |
| Rated Impulse Withstand Voltage (1.2/50) | 6kV | |
| Dielectric Test Voltage | 2000V (50Hz, 1 min) | |
| Heat & Humidity Resistance | 28 Cycles | |
| Vibration Resistance | No Obvious Vibration and Impact | |
| Terminal Block | Terminal Block Type | Pillar Terminal Block |
| Min. Terminal Size Acceptability | 1mm2 | |
| Max. Terminal Size Acceptability | 25mm2 | |
| Standard Connection Torque | 2 N.m | |
| Max. Tolerable Torque | 2.5 N.m | |
| Wire Insertion Depth | 13mm | |
| Reference Temperature | 30℃ | |
| Operating Temperature | -35℃~+70℃ | |
| Storage Temperature | 35℃~+85℃ | |
| Applicable Altitude | 2000m | |
| Tripping Mode | Thermal Magnetic Trip | |
| Electromagnetic Tripping Type | Type C (5In-10In) | |
| Shell Flame Retardant Grade | V0 | |
| Wire Entry Method | Both Upper and Lower | |
| Installation Method | TH35-7.5 Standard Rail | |
| Protection Level | Direct Installation | IP20B |
| Installed in the Distribution Box | IP40B |
Single Pole MCB Breaker Dimension (Unit: mm)
Details
Tips: 40 amp 1 pole mini circuit breaker applications
A 40 Amp single pole miniature circuit breaker (MCB) is designed for single phase electrical systems, providing reliable protection against overloads and short circuits. With a 40A current rating, it is suitable for higher-power applications in residential, commercial, and light industrial settings.
Common applications:
- Residential Use: Protects circuits for high-power appliances such as electric water heaters, air conditioners, and electric ovens.
- Commercial Buildings: Used in office spaces, shops, and restaurants to safeguard lighting and power distribution circuits.
- Industrial Applications: Ideal for controlling individual equipment and machinery with moderate power consumption.
- EV Charging Stations: Protects dedicated electric vehicle chargers in homes or small commercial setups.
- HVAC Systems: Ensures safe operation of heating, ventilation, and air conditioning units.
ATO mini MCB’s compact design, compliance with IEC standards, and easy reset capability make it a dependable choice for electrical protection.
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