TBC-363M Miniature Circuit Breaker (MCB) 3P 63A 6kA

Tripping Technology: The TBC-363M employs proven thermal-magnetic trip technology. The thermal element consists of a bimetallic strip that bends under sustained overload conditions, eventually triggering the trip mechanism. The magnetic element uses an electromagnet that responds instantaneously to high fault currents, providing rapid disconnection during short-circuit events.

Type C Tripping Curve: The Type C characteristic provides tripping between 5 and 10 times the rated current, making it ideal for circuits with moderate inductive loads. This curve offers a balance between nuisance tripping prevention and adequate protection for most commercial and light industrial applications.

Breaking Capacity: With a rated breaking capacity of 6 kA at 415V AC, this MCB can safely interrupt fault currents up to 6,000 amperes, suitable for typical low-voltage distribution systems in residential and commercial installations.

Electrical Ratings: Designed for operation at 415V AC with 50/60 Hz frequency, the device features a rated impulse voltage withstand of 4 kV, providing protection against transient overvoltages. The 63A rated current capacity supports substantial loads across three phases.

Durability: The mechanical durability of 20,000 operations and electrical durability of 4,000 cycles ensure long service life even in applications requiring frequent switching or in environments with regular fault conditions.

Environmental Performance: The wide operating temperature range of -35°C to +70°C and humidity tolerance up to 95% RH make this MCB suitable for installation in diverse environmental conditions, from cold storage facilities to tropical climates.

• Residential distribution boards and consumer units for three-phase supply protection
• Commercial building electrical panels and sub-distribution boards
• Light industrial installations including workshops and small manufacturing facilities
• Protection of three-phase motor circuits and HVAC equipment
• Shopping centers and retail facility electrical distribution systems
• Office buildings and educational institution power distribution
• Hotels, hospitals, and institutional building electrical systems
• Agricultural facilities and farm building electrical protection
• General low-voltage three-phase protection circuits
• Renovation and upgrade projects requiring reliable circuit protection