Circuit Breakers

Circuit Breakers & Electrical Breakers Singapore – MCB, MCCB & RCCB for Complete Electrical Protection

A circuit breaker is one of the most important safety components in any electrical system. Whether in residential homes, commercial buildings, or industrial facilities, circuit breakers protect electrical circuits from overloads, short circuits, and earth leakage faults that can cause equipment damage, fire hazards, or serious injury. Choosing the right electrical breaker, such as an MCB breaker, MCCB breaker, or RCCB breaker, is essential for maintaining electrical safety and system reliability.

At Horme Hardware, we supply a comprehensive range of circuit breakers in Singapore, suitable for distribution boards, electrical panels, and power systems across homes, offices, and industrial environments. Our selection supports safe power distribution, compliance with safety standards, and long-term operational reliability.

Buy Circuit Breakers in Singapore

Circuit breakers are designed to automatically interrupt electrical current when abnormal conditions occur. Unlike fuses, circuit breakers can be reset after tripping, making them a practical and reusable safety solution.

Circuit breakers are commonly used in:
• HDB flats, condominiums, and landed homes
• Commercial offices and retail spaces
• Industrial plants and factories
• Electrical distribution boards and panels
• Maintenance, upgrade, and renovation projects

Selecting the correct circuit breaker helps prevent electrical damage and ensures safe operation of electrical systems.

Electrical Breakers for Safe Power Distribution

An electrical breaker is a general term covering all types of circuit breakers used to protect electrical circuits. These devices detect faults such as excessive current or leakage and disconnect power before damage occurs.

Electrical breakers are essential for:
• Protecting wiring and appliances
• Preventing electrical fires
• Reducing equipment downtime
• Ensuring user safety

Whether for residential or industrial use, electrical breakers form the backbone of any safe power distribution system.

MCB Breakers for Residential & Light Commercial Use

An MCB breaker (Miniature Circuit Breaker) is commonly used in residential homes and light commercial installations. MCB breakers protect circuits from overloads and short circuits by automatically tripping when current exceeds safe levels.

MCB breakers are suitable for:
• Homes and residential units
• Offices and small commercial spaces
• Lighting and power socket circuits
• Electrical distribution boards

MCB breakers are compact, reliable, and easy to reset, making them ideal for everyday electrical protection.

MCCB Breakers for Industrial & High-Current Applications

An MCCB breaker (Moulded Case Circuit Breaker) is designed for higher current ratings and more demanding applications. MCCB breakers are commonly used in industrial and commercial power systems where greater protection capacity is required.

MCCB breakers are ideal for:
• Industrial plants and factories
• Commercial buildings with high power demand
• Main incomer and sub-distribution circuits
• Heavy machinery and equipment

MCCB breakers provide robust protection and are essential for managing high-load electrical systems safely.

RCCB Breakers for Earth Leakage & Electrical Safety

An RCCB breaker (Residual Current Circuit Breaker) protects against earth leakage currents that may not trigger overload protection. RCCB breakers are critical for preventing electric shock and enhancing personal safety.

RCCB breakers are commonly used for:
• Residential electrical systems
• Bathrooms, kitchens, and wet areas
• Commercial and office installations
• Safety-critical circuits

By detecting leakage currents and disconnecting power quickly, RCCB breakers significantly improve electrical safety.

Circuit Breakers for Distribution Boards & Panels

Circuit breakers are installed in distribution boards and electrical panels to manage and protect individual circuits. A typical distribution board may contain a combination of MCB, MCCB, and RCCB breakers to provide layered protection.

Common applications include:
• Main and sub-distribution boards
• Electrical control panels
• Building power systems
• Industrial electrical installations

Using the right mix of circuit breakers ensures comprehensive protection across all circuits.

How to Choose the Right Circuit Breaker

Choosing the correct circuit breaker depends on several factors:
• Type of installation (home, office, industrial)
• Current rating and load requirements
• Need for earth leakage protection
• Installation environment

MCB breakers are suitable for general residential use, MCCB breakers are designed for higher-capacity industrial systems, and RCCB breakers are essential for earth leakage protection. Understanding these differences helps ensure proper electrical safety.

Circuit Breakers in Singapore Electrical Systems

In Singapore, circuit breakers are widely used across residential developments, commercial buildings, and industrial estates. With dense infrastructure and high electrical demand, reliable circuit protection is essential for safety and compliance.

Common local use cases include:
• HDB flats and condominiums
• Office buildings and shopping malls
• Industrial facilities and warehouses
• Electrical upgrades and retrofits

Properly selected circuit breakers help maintain safe and efficient electrical systems.

Installation & Maintenance Considerations

Correct installation and maintenance are crucial for circuit breaker performance.

Best practices include:
• Proper sizing and rating selection
• Secure installation in distribution boards
• Periodic inspection and testing
• Replacing damaged or faulty breakers

Routine checks help ensure circuit breakers function correctly when needed.

Benefits of Using the Right Electrical Breakers

Using appropriate circuit breakers provides multiple advantages:
• Enhanced electrical safety
• Protection against overloads and faults
• Reduced risk of fire and equipment damage
• Improved system reliability

A well-designed circuit protection system helps ensure long-term safety and performance.

Why Buy Circuit Breakers from Horme Hardware

Horme Hardware is a trusted supplier of circuit breakers and electrical breakers in Singapore, serving homeowners, electricians, contractors, and industrial users. Our range includes MCB breakers, MCCB breakers, and RCCB breakers suitable for various electrical applications.

When you buy circuit breakers from Horme Hardware, you benefit from:
• A wide selection of electrical protection solutions
• Products suitable for residential, commercial, and industrial use
• Reliable options for distribution boards and panels
• Convenient online ordering with local delivery across Singapore

As a one-stop hardware supplier, we also provide complementary electrical accessories and installation tools.

You can find great deals on circuit breakers from the best-selling brands like Schneider & ABB, whom you know you can trust for high-quality circuit breakers. Other circuit breakers can also be found here in the Horme Hardware Webstore, Singapore's leading online DIY hardware supplier for circuit breakers.

Note: Singapore has mandated the installation of residual current circuit breakers (RCCBs) in all Housing Board (HDB) flats and private dwellings by July 1, 2025. Non-compliance may result in a fine of $5,000. HDB said it will cover the installation and rewiring cost for one- and two-room flats built in and before July 1985, while those staying in larger flats will get a subsidy of up to 95 per cent.

Frequently Asked Questions About Circuit Breakers

What is the difference between a circuit breaker and an electrical breaker?
The terms are often used interchangeably to describe devices that protect electrical circuits.

What is the difference between MCB, MCCB and RCCB breakers?
MCB protects against overloads, MCCB handles higher currents, and RCCB protects against earth leakage.

Which circuit breaker is suitable for homes?
MCB breakers combined with RCCB breakers are commonly used in homes.

Are MCCB breakers used in residential buildings?
MCCB breakers are typically used in commercial and industrial installations.

Why is RCCB important for safety?
RCCB breakers help prevent electric shock by detecting leakage currents.