The TBC-240M is a high-performance 2-pole miniature circuit breaker engineered to deliver dependable protection against overload and short-circuit faults in low-voltage electrical distribution systems. Featuring thermal-magnetic tripping technology with Type C characteristic and 6kA breaking capacity, this MCB ensures optimal safety and reliability for residential, commercial, and light industrial installations.
The TBC-240M Miniature Circuit Breaker represents a robust solution for protecting electrical circuits in diverse applications. This 2-pole MCB combines advanced thermal-magnetic tripping technology with a Type C characteristic curve, making it particularly suitable for circuits with moderate inductive loads such as lighting systems, small motors, and general power distribution.
Designed to meet the demanding requirements of modern electrical installations, the TBC-240M offers a breaking capacity of 6kA at 415V AC, ensuring reliable protection against short-circuit faults. The thermal element provides time-delayed protection against overload conditions, while the magnetic element delivers instantaneous tripping for short-circuit faults, with a tripping time of less than 0.1 seconds.
The compact design with a width of just 36mm allows for efficient use of distribution board space, while the standard 35mm DIN rail mounting ensures quick and secure installation. With an impressive mechanical durability of 20,000 operations and electrical durability of 4,000 operations, the TBC-240M is built for long-term reliability in demanding environments.
Certified to international standards including IEC 60898-1 and bearing CE marking, CB CERT, and TÜV certifications, the TBC-240M meets the highest quality and safety requirements for global markets.
Tripping Characteristics:
The TBC-240M features a Type C tripping curve, which is specifically designed for circuits with moderate inductive loads. The Type C characteristic provides tripping at 5 to 10 times the rated current (In), making it ideal for applications where inrush currents may occur, such as fluorescent lighting, small transformers, and motor circuits.
Thermal-Magnetic Protection:
The dual protection mechanism combines a bimetallic thermal element for overload protection with an electromagnetic release for short-circuit protection. The thermal element responds to sustained overcurrent conditions with time-delayed tripping, while the magnetic element provides instantaneous protection against high-magnitude short-circuit faults.
Breaking Capacity:
With a rated breaking capacity of 6kA at 415V AC, the TBC-240M is suitable for most residential and commercial applications where fault levels are moderate. The breaking capacity represents the maximum prospective short-circuit current that the MCB can safely interrupt without damage.
Installation and Mounting:
The MCB is designed for standard 35mm DIN rail mounting, allowing for quick installation and removal without the need for special tools. The toggle control mechanism provides clear ON/OFF indication and manual operation for maintenance and testing purposes.
Environmental Performance:
Engineered to operate reliably across a wide temperature range from -35°C to +70°C, the TBC-240M is suitable for both indoor and temperature-controlled outdoor applications. The IP20 degree of protection ensures safety against solid objects larger than 12.5mm while being suitable for standard electrical enclosures.
| Parameter | Specification |
|---|---|
| Electrical Characteristics | |
| Model Number | TBC-240M |
| Type | Miniature Circuit Breaker (MCB) |
| Number of Poles | 2P |
| Rated Current (In) | 40 A |
| Rated Voltage (Un) | 415 V AC |
| Rated Frequency | 50 / 60 Hz |
| Rated Impulse Voltage | 4 kV |
| Network Type | AC |
| 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 operations |
| Electrical Durability | 4,000 operations |
| Environmental Conditions | |
| Operating Temperature | -35°C to +70°C |
| Relative Humidity | 0 – 95% |
| Degree of Protection | IP20 |
| Physical Dimensions | |
| Height | 78 mm |
| Width | 36 mm |
| Depth | 66 mm |
| Compliance & Certification | |
| Standards | IEC 60898-1 |
| Certifications | CB CERT, CE Marking, TÜV |
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