TBC-432M Miniature Circuit Breaker (MCB) 4P 32A 6kA

Name: TBC-432M Miniature Circuit Breaker (MCB) 4P 32A 6kA
Brand: TBC
SKU: TBC-432M

TBC-432M

The TBC-432M is a professional-grade 4-pole miniature circuit breaker engineered to deliver dependable overload and short-circuit protection in low-voltage electrical distribution systems. Featuring advanced thermal-magnetic trip technology with Type C tripping characteristics, this MCB is ideal for safeguarding circuits in residential, commercial, and light industrial environments where reliable protection is essential.

Key Features

4-pole configuration for comprehensive three-phase and neutral protection
32A rated current capacity for medium-load applications
Type C tripping curve optimized for inductive loads and motor circuits
6kA breaking capacity suitable for standard distribution networks
Thermal-magnetic trip technology for dual protection against overloads and short circuits
Fast tripping time under 0.1 seconds for enhanced safety
Standard 35mm DIN rail mounting for quick and easy installation
Compact 72mm width design for space-efficient panel layouts
Wide operating temperature range from -35°C to +70°C
High mechanical durability rated for 20,000 switching cycles
IEC 60898-1 compliant with CE, CB, and TÜV certifications
IP20 degree of protection for standard indoor environments

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The TBC-432M miniature circuit breaker represents a reliable solution for modern electrical distribution systems requiring robust four-pole protection. Designed to meet the demanding requirements of both commercial and industrial installations, this MCB combines proven thermal-magnetic technology with precision engineering to ensure consistent performance and long service life.

With its Type C tripping characteristic, the TBC-432M is specifically suited for circuits with moderate inrush currents, including lighting systems, motor-driven equipment, and general power distribution. The 6kA breaking capacity provides adequate protection for typical low-voltage networks, while the compact four-module width allows for efficient use of distribution board space.

Built to international standards and backed by multiple certifications, the TBC-432M offers peace of mind for electrical contractors, facility managers, and system designers who demand quality and reliability in their protection devices.

Trip Mechanism: The TBC-432M employs a dual-element thermal-magnetic trip mechanism. The thermal element provides time-delayed protection against sustained overloads, while the magnetic element delivers instantaneous protection against short-circuit faults. The Type C characteristic triggers magnetic tripping at 5-10 times the rated current, making it ideal for circuits with moderate inrush currents.

Breaking Performance: With a rated breaking capacity of 6kA at 415V AC, this MCB can safely interrupt fault currents up to 6,000 amperes. The ultra-fast tripping time of less than 0.1 seconds under short-circuit conditions minimizes potential damage to downstream equipment and wiring.

Construction: The circuit breaker features a robust thermoplastic housing with silver-alloy contacts designed for reliable arc interruption. The toggle mechanism provides clear ON/OFF indication and tactile feedback. All four poles are mechanically linked to ensure simultaneous disconnection of all phases and neutral.

Installation: Standard 35mm DIN rail mounting enables tool-free installation and removal. The compact 72mm width (4 modules at 18mm each) optimizes panel space utilization. Terminal design accommodates a range of conductor sizes for flexible wiring options.

Durability: Rated for 20,000 mechanical operations and 4,000 electrical operations at rated current, the TBC-432M is built for long-term reliability in demanding applications. The wide operating temperature range and humidity tolerance ensure consistent performance across diverse environmental conditions.

Residential distribution boards and consumer units for whole-house protection
Commercial building electrical panels and sub-distribution boards
Light industrial control panels and machinery circuits
Three-phase motor protection circuits with moderate starting currents
HVAC equipment and air conditioning system protection
Lighting distribution circuits in commercial and industrial facilities
General power distribution in offices, retail spaces, and workshops
Pump and compressor control circuits
Small manufacturing equipment and production line circuits
Building services and facility management applications

Parameter	Specification
Electrical Characteristics
Rated Voltage (Un)	415 V AC
Rated Frequency	50 / 60 Hz
Rated Impulse Voltage (Uimp)	4 kV
Network Type	AC
Number of Poles	4P
Rated Current (In)	32 A
Tripping Technology	Thermal-Magnetic
Tripping Curve	Type C
Tripping Time	t < 0.1 s
Breaking Capacity (Icn)	6 kA
Mechanical Characteristics
Control Type	Toggle Switch
Mounting Type	DIN Rail (35 mm)
Mechanical Durability	20,000 cycles
Electrical Durability	4,000 cycles
Physical Dimensions
Height	78 mm
Width	72 mm (4 modules)
Depth	66 mm
Environmental Conditions
Operating Temperature	-35 °C to +70 °C
Relative Humidity	0 – 95 % (non-condensing)
Degree of Protection	IP20
Standards & Compliance
Standards	IEC 60898-1
Certifications	CE, CB, TÜV

TBC-432M Miniature Circuit Breaker (MCB) 4P 32A 6kA

Key Features

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