Thermal Trip Unit for MCB Miniature Circuit Breaker (3057280)
When a short circuit occurs in the (MCB) circuit (such as the phase line and the phase line, or the phase line and the neutral line are directly connected), the (MCB) will instantly generate a short-circuit current far greater than the normal operating current (usually tens to hundreds of times the rated current). The core of the magnetic release is an electromagnet (composed of a coil and an iron core): When the (MCB) short-circuit current passes through the coil, it will generate a strong electromagnetic force, attracting the iron core to move, and then push the mechanical mechanism of the circuit breaker, so that the moving and static contacts are quickly separated, and the circuit is cut off in a very short time (usually milliseconds), avoiding the continuous action of the short-circuit current, which will cause the line to overheat, the equipment to burn, and even cause a fire.
Each thermal trigger is a "temperature sentinel" that undergoes a 300-hour aging test. HAIPART's patented disc-shaped spring structure achieves a mechanical tripping action within 0.3 seconds upon reaching the preset temperature. Compared to traditional fuses, our resettable design can reduce production line maintenance downtime by 90%—this is not only a technological innovation, but also the ultimate respect for production efficiency.
Why choose the HAIPART Thermal Trip Unit?
✅
A composite metal layer bonded by vacuum diffusion welding increases thermal response speed by 40%, maintaining ±5% operational consistency in ambient temperatures from -25°C to 60°C.
✅
A Swiss CNC-machined V-groove latch mechanism controls the tripping force to 0.49N ± 0.03N, preventing false tripping.
✅
Exclusive rapid cooling and reset technology restores the metal plate to its original shape within 90 seconds after power failure, far exceeding the industry average of 300 seconds.
Applications:
Suitable for home power, industrial production lines, new energy photovoltaics, and other applications.
Each thermal trigger is a "temperature sentinel" that undergoes a 300-hour aging test. HAIPART's patented disc-shaped spring structure achieves a mechanical tripping action within 0.3 seconds upon reaching the preset temperature. Compared to traditional fuses, our resettable design can reduce production line maintenance downtime by 90%—this is not only a technological innovation, but also the ultimate respect for production efficiency.
Why choose the HAIPART Thermal Trip Unit?
✅
A composite metal layer bonded by vacuum diffusion welding increases thermal response speed by 40%, maintaining ±5% operational consistency in ambient temperatures from -25°C to 60°C.
✅
A Swiss CNC-machined V-groove latch mechanism controls the tripping force to 0.49N ± 0.03N, preventing false tripping.
✅
Exclusive rapid cooling and reset technology restores the metal plate to its original shape within 90 seconds after power failure, far exceeding the industry average of 300 seconds.
Applications:
Suitable for home power, industrial production lines, new energy photovoltaics, and other applications.
