40 amp 1 pole Miniature Circuit Breaker

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$54.99

Low single pole cost miniature circuit breaker is 35mm DIN rail mounted, 40 amp rated current at 230/400V AC voltage, 6kA short circuit breaking capacity. The 1 pole mini MCB breaker offers a compact solution for protection requirements.

SKU: ATO-MCB-1P40

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Overview
Related Video

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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Existing reviews of 40 amp 1 pole Miniature Circuit Breaker

I will definitely buy this product again.

I used this miniature circuit breaker on my new solar system to make sure it worked and I upped the voltage. It shuts down the system as it was supposed to. Highly recommend it and I will definitely buy this product again.

From: Donald | Date: 20/05/2022

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