The TBC-406M is a professional-grade 4-pole miniature circuit breaker engineered to deliver dependable overload and short-circuit protection in low-voltage electrical distribution networks. Featuring advanced thermal-magnetic trip technology with Type C characteristics, this MCB is ideal for residential, commercial, and light industrial applications where reliable circuit protection is essential.
The TBC-406M miniature circuit breaker represents a reliable solution for protecting electrical circuits against overload and short-circuit conditions in modern distribution systems. With its 4-pole design, this MCB provides simultaneous protection for all three phases plus neutral, making it particularly suitable for three-phase installations.
Built with thermal-magnetic trip technology, the TBC-406M combines a bimetallic thermal element for overload protection with an electromagnetic release for instantaneous short-circuit protection. The Type C tripping characteristic makes it ideal for circuits with moderate inrush currents, such as lighting circuits, small motors, and general power distribution.
Designed for professional installation, this circuit breaker mounts easily on standard 35mm DIN rails and features a robust toggle mechanism for manual switching. Its compact 72mm width allows for efficient use of panel space while maintaining full functionality. The device is engineered to perform reliably across a wide temperature range and meets stringent international safety standards.
Whether you're designing a new electrical installation or upgrading existing protection systems, the TBC-406M delivers the performance, reliability, and compliance required for modern electrical distribution applications.
Trip Characteristics: The TBC-406M features Type C tripping characteristics, with instantaneous magnetic trip occurring between 5 and 10 times the rated current (30-60A for this 6A model). The thermal overload protection activates at 1.13 times rated current within 60 minutes and at 1.45 times rated current within 60 seconds, providing comprehensive protection against sustained overloads.
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 ensures rapid disconnection during fault conditions, minimizing potential damage to connected equipment and wiring.
Construction & Materials: The circuit breaker housing is manufactured from high-grade thermoplastic materials providing excellent arc-quenching properties and mechanical strength. Internal contacts are designed for low contact resistance and high durability, rated for 4,000 electrical operations and 20,000 mechanical operations.
Installation & Wiring: The device mounts on standard 35mm DIN rails using an integrated snap-on mechanism. Terminal connections accommodate wire sizes suitable for 6A applications, with screw terminals providing secure and reliable connections. The 4-pole configuration requires appropriate busbar or wiring connections for all four poles.
Standards Compliance: Manufactured in accordance with IEC 60898-1 standards for miniature circuit breakers, the TBC-406M has been tested and certified by recognized international bodies including CE marking for European compliance, CB scheme certification for international recognition, and TÜV certification for quality assurance.
| Parameter | Specification |
|---|---|
| Electrical Characteristics | |
| Rated Voltage (Un) | 415 V AC |
| Rated Frequency | 50 / 60 Hz |
| Rated Impulse Voltage | 4 kV |
| Network Type | AC |
| Rated Current (In) | 6 A |
| Number of Poles | 4P |
| Tripping Technology | Thermal-Magnetic |
| Tripping Curve | Type C |
| Tripping Time | t < 0.1 s |
| Breaking Capacity | 6 kA |
| Mechanical Characteristics | |
| Control Type | Toggle |
| Mounting Type | DIN Rail (35 mm) |
| Mechanical Durability | 20,000 cycles |
| Electrical Durability | 4,000 cycles |
| Physical Dimensions | |
| Height | 78 mm |
| Width | 72 mm |
| Depth | 66 mm |
| Environmental Conditions | |
| Operating Temperature | -35 °C to +70 °C |
| Relative Humidity | 0 – 95 % |
| Degree of Protection | IP20 |
| Standards & Certifications | |
| Compliance Standard | IEC 60898-1 |
| Certifications | CE, CB, TÜV |
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