2-Pole Plastic Miniature Circuit Breaker

A 2-Pole Plastic Miniature Circuit Breaker (MCB) is a protective electrical device designed to automatically disconnect both live conductors in the event of overload or short circuit. It ensures safe and reliable circuit protection in both AC and DC systems, especially where dual-line isolation is required.Note: Please keep the product away from fire source when storing. This and need to be stored in a cool, dry place, away from heat and ignition sources.

Key Aspects of 2-Pole MCBs

Safety Function:

• Provides overload and short circuit protection
• Simultaneously disconnects both poles for enhanced safety
• Prevents damage to electrical equipment such as motors and transformers

Design:

• High-quality plastic housing with excellent insulation performance
• Silver copper contacts for stable conductivity
• Compact structure with long mechanical life (up to 10,000 operations)

Ratings:

• Rated current range: 6A–63A
• Breaking capacity: up to 6kA
• Insulation voltage: up to AC400V
• Standard 35mm DIN rail mounting

Difference from Tandem:

• 2-pole breakers control two circuits simultaneously with linked operation
• Tandem breakers operate two independent circuits in a single slot
• 2-pole breakers are safer for 240V or dual-line applications

Applications

Commercial / Industrial Systems:

• 2-Pole Plastic Miniature Circuit Breaker is widely used in factory distribution boards, control panels, and workshop power systems
• Provides reliable protection for motors, transformers, and heavy-duty equipment
• Ensures stable operation in high-load and continuous working environments

Protection of Sensitive Equipment:

• Ideal for automation systems, instrumentation, and control devices
• Prevents damage caused by overload, short circuit, and voltage fluctuations
• Improves system reliability and reduces downtime

Safety Isolation:

• Simultaneously disconnects both live conductors for enhanced safety
• Suitable for maintenance scenarios requiring complete circuit isolation
• Reduces risk of electric shock during servicing

DC Distribution Systems:

• Applicable in solar PV systems and wind power installations
• Provides effective protection on both AC and DC sides
• Ensures safe and stable operation of renewable energy systems

Advantages

• Plastic material: The 2-Pole Plastic Miniature Circuit Breaker is made of high standard plastic, silver copper, providing reliable electrical isolation and insulation resistance, using up to AC400V insulation voltage. Long service life, up to 10,000 Times.
• Easy Installation: Compact size and light weight, using standard 35mm DIN rail mounting, easy and quick installation.
• Wide Current Capacity: Supports up to 6kA breaking capacity for a wide range of applications from 6A to 63A.
• Compliant with CE, CCC, and ISO9001 standards

Selection Recommendations, Installation, and Maintenance

We recommend selecting a double-pole plastic miniature circuit breaker for use with: high-power equipment, humid environments, and circuits requiring frequent maintenance.

We recommend selecting a single-pole circuit breaker for use with: low-power lighting and standard small household appliances.

The Pugao technical team is available to provide expert advice, helping you achieve the optimal match between your equipment and circuitry.

• Install on a standard 35mm DIN rail in a dry, ventilated enclosure
• Ensure proper wiring according to rated voltage and current
• Regularly inspect for wear, overheating, or loose connections
• Keep away from fire sources and high humidity environments
• Disconnect power before maintenance or replacement

FAQ

What is the difference between a 1-pole and 2-pole breaker?

A 1-pole breaker protects a single circuit, while a 2-pole breaker simultaneously controls and protects two live wires, making it suitable for higher voltage or dual-line systems.

Can a 2-pole breaker be used for two 120V circuits?

Yes, but only if both circuits share a common trip mechanism. This ensures both lines disconnect simultaneously for safety compliance.

What does "trip-free" mean?

"Trip-free" means the breaker will disconnect the circuit even if the handle is held in the ON position during a fault condition.

How do I choose the right rating?

When selecting a 2-Pole Plastic Miniature Circuit Breaker, consider load power, circuit type, and environmental conditions. For high-power or critical systems, choose higher-rated models. For lighting or small appliances, lower ratings are sufficient. Professional guidance is recommended for optimal selection.

Why Choose Pugao

• Over 10 years of expertise in high and low voltage electrical equipment manufacturing
• ISO9001, ISO14001, ISO45001 certified production system
• Advanced automated production lines and strict quality control
• Comprehensive product range including switchgear, transformers, and circuit breakers
• Global distribution network with trusted partners in over 20 countries
• One-stop service from design and production to installation and maintenance