50 amp double pole miniature circuit breaker (MCB) compliant with IEC standards, providing reliable protection against short circuits, overloads, and power failures. This mini circuit breaker is ideal for supplementary protection in commercial and industrial settings, ensuring enhanced safety and performance.
Double Pole MCB Breaker Features
- Rapid arc extinguishing system: This double pole mini circuit breaker eliminates line danger, can sense even small currents, and provides sensitive protection.
- Thermosetting shell: 2 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 |
ATO-BY6-63-2P-50A |
Number of Poles |
2P |
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 |
Double Pole MCB Breaker Dimensions (Unit: mm)

Double 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: 50 amp 2 pole miniature circuit breaker applications
A 50 amp 2 pole mini circuit breaker (MCB) is commonly used in residential, commercial, and light industrial applications to protect electrical circuits from overloads and short circuits. It is designed to handle higher current loads and simultaneously disconnect both live wires in a 240V system, ensuring safety and compliance with electrical standards.
In residential settings, it is often used for high-power appliances like electric water heaters, ovens, and air conditioning units. In commercial applications, it protects equipment such as HVAC systems, large lighting installations, and heavy-duty power tools. In light industrial environments, it safeguards machinery, motors, and small distribution boards.
The compact design of the double pole MCB allows for easy installation in standard electrical panels, making it a reliable choice for space-constrained setups. Its quick response to fault conditions helps prevent equipment damage and fire hazards, ensuring long-term operational safety and system integrity.