25 Amp 1 Pole Miniature Circuit Breaker

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Stock: In Stock
Model: RDDLZ-MCB-1P25
Weight: 1.00
SKU: RDDLZ-MCB-1P25

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A single pole miniature circuit breaker (MCB) is a compact mini safety switch that protects electrical circuits from overcurrent, preventing potential damage from overloads or short circuits. This 25 amp micro circuit breaker is commonly used in residential and light commercial installations.

Single Pole MCB Breaker Information

Rated Current: 25 amp
Rated Voltage: 230/400V AC, 50Hz
Number of poles: 1 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-NB8-631PC25
Rated Current		25A
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: Miniature circuit breaker structure

A miniature circuit breaker (MCB) consists of several key components that work together to provide circuit protection. The main parts include:

Housing: Made of high-strength, fire-resistant plastic to protect internal components.
Operating Mechanism: Includes a toggle switch or lever that allows manual switching of the circuit on or off.
Contacts: Metallic components that open and close the circuit. When the mini MCB trips, these contacts separate to interrupt the current flow.
Bimetallic Strip: A thermal element that bends when exposed to excessive current, triggering a trip in case of overload.
Magnetic Coil (Solenoid): Provides instant tripping during short circuits by generating a strong magnetic force.
Arc Chute: A series of plates that dissipate and extinguish the electrical arc formed when contacts open.

These components ensure reliable circuit protection, preventing damage from overcurrent conditions in residential, commercial, and industrial applications.

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