40 Amp 4 Pole Miniature Circuit Breaker

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Stock: In Stock
Model: RDDLZ-MCB-4P40
Weight: 1.00
SKU: RDDLZ-MCB-4P40

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4 pole MCB miniature circuit breaker is rated for 40 amps with a C trip curve, offering dependable overload and short circuit protection for electrical systems. This mini circuit breaker features a 6kA breaking capacity, delivering superior protection in both commercial and industrial settings.

4 Pole MCB Breaker Information

Rated Current: 40 amp
Rated Voltage: 230/400V AC, 50Hz
Number of poles: 4 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		RDDLZ-NB8-634PC40
Rated Current		40A
Rated Voltage		230/400V
Frequency		50Hz
Number of Poles		4P
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

4 Pole MCB Breaker Dimensions (Unit: mm)

Details

Tips: Main parameters of miniature circuit breaker

A miniature circuit breaker (MCB) is an essential component used for protecting electrical circuits from overload and short circuits. Here are the main parameters to consider when selecting an MCB:

Rated Current (In): The maximum current the MCB can carry without tripping, typically measured in amperes (A).
Breaking Capacity (Icu): The maximum fault current the mini circuit breaker can interrupt without causing damage, expressed in kA.
Tripping Curve: Defines the time it takes for the MCB to trip at different levels of overcurrent. Common types include B, C, and D curves, each suitable for different applications.
Rated Voltage (Un): The voltage the micro circuit breaker is designed to operate at, usually 230V or 400V for residential or industrial systems.
Poles: The number of poles (single, double, triple, or four-pole) depends on the configuration of the circuit.
Environmental Conditions: Consider temperature, humidity, and altitude ratings for optimal performance.

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