50 Amp 4 Pole Miniature Circuit Breaker

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$93.85

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Stock: In Stock
Model: RDDLZ-MCB-4P50
Weight: 1.00
SKU: RDDLZ-MCB-4P50

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4 pole 50 amp miniature circuit breaker (MCB) operates at a rated frequency of 50-60Hz, which is commonly used in electrical systems to protect circuits from overcurrent, short circuits, and overload conditions, ensuring reliable performance and safety.

4 Pole MCB Breaker Features

Rapid arc extinguishing system: This 4P mini circuit breaker eliminates line danger, can sense even small currents, and provides sensitive protection.
Thermosetting shell: 4 pole MCB breaker uses thermosetting plastic, which solidifies or has insoluble characteristics under heat or other conditions.
Sealed terminal: 50 amp miniature circuit breaker has a built-in sealed terminal, which is rust-proof and convenient, and meets certification standards.
Ergonomic handle: The handle is comfortable to operate, has high segmentation capacity, and is sensitive to action.

Technical Data

Model	RDDLZ-BY6-63-4P-50A
Number of Poles	4P
Rated Frequency	50-60Hz
Frame Grade Current	63A
Rated Current(In)	50A
Rated Insulation Voltage	400V
Rated Impulse Withstand Voltage (Uimp)	4000KV
Rated Short-circuit Capacity(Inc)	3000-6000KA
Producible Leakage Protection Type	AC type
Electrical Characteristics	Short Circuit Protection, Overload Protection, Power Failure Protection
Electrical Life	10000
Mechanical Life	10000
Protection Level	IP20
Comply with the Standard	GB/T10963.1-2020 IEC60898-1

4 Pole MCB Breaker Dimensions (Unit: mm)

4 Pole MCB Breaker Wiring

How to Choose a Miniature Circuit Breaker for Home?

Rated Current	Copper Core Wire	Load Power	Applications
1~5A	＜1mm	≤1100W	Low-power Equipment
6A	≥1mm	≤1320W	Lighting
10A	≥1.5mm	≤2200W	Lighting
16A	≥2.5mm	≤3520W	Lighting, Sockets, 1~1.5 hp Air Conditioner
20A	≥2.5mm	≤4400W	Lighting, Sockets, 1~1.5 hp Air Conditioner
25A	≥4mm	≤5500W	Lighting, Sockets, 1~2.5 hp Air Conditioner
32A	≥6mm	≤7040W	Sockets, 3 hp Air Conditioner, 6 kW Water Heater
40A	≥10mm	≤8800W	8 kW Instant Water Heater, Main Power Switch
50A	≥10mm	≤11000W	Main Power Switch
63A	≥16mm	≤13200W	Main Power Switch

Tips: How do miniature circuit breakers protect circuits?

Miniature circuit breakers (MCBs) protect electrical circuits by automatically interrupting the current flow when an overload or short circuit occurs. They use two primary mechanisms: a thermal trip and a magnetic trip.

The thermal trip responds to prolonged overloads. Inside the mini circuit breaker, a bimetallic strip heats up as the current increases. If the current exceeds a safe limit for an extended period, the strip bends and triggers the trip mechanism, disconnecting the circuit to prevent overheating and potential fire hazards.

The magnetic trip reacts to sudden surges, like those from short circuits. It uses an electromagnet that generates a magnetic field proportional to the current. If the current spikes abruptly, the magnetic force pulls a lever to trip the breaker instantly, stopping the flow to prevent equipment damage.

MCBs are resettable and provide reliable, quick protection, making them essential for safeguarding electrical systems in homes, industries, and commercial buildings.

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