The Live CA310C Triple Pole MCB is a high-grade miniature circuit breaker engineered to provide robust protection for industrial and commercial distribution lines operating at AC 50/60Hz up to 400V. This 10A 3P MCB utilizes a C-Curve tripping characteristic, specifically designed to handle moderate inrush currents typically associated with inductive loads such as motors, pumps, and fluorescent lighting. With a dependable 6kA short-circuit breaking capacity and a durable thermo-magnetic release mechanism, the CA310C ensures your wiring systems remain safe from overloads and short circuits while allowing for infrequent switching operations.

Key Features of Live CA310C 10A MCB

• Specialized C-Curve Protection: Instantaneous tripping set between 5 and 10 times the rated current (In), making it the industry standard for protecting inductive circuits and equipment.

• Optimized for Inductive Loads: Perfect for applications with starting current surges, such as small motors, transformers, and commercial lighting ballasts.

• High Breaking Capacity: Certified 6kA rating ensures reliable interruption of fault currents, protecting downstream devices and cabling.

• Dual Protection Mechanism: Thermo-magnetic technology provides time-delayed overload protection (thermal) and instant short-circuit protection (magnetic).

• Superior Insulation Safety: Rated with insulation voltage (Ui) of 500V and impulse withstand voltage (Uimp) of 4000V for enhanced operator safety.

• Extended Electrical Life: Engineered for 8,000 on-off cycles, ensuring longevity in panel applications.

• Easy Installation: Terminal capacity supports wiring up to 16mm², suitable for a wide range of conductors.

Technical Specifications

Frequently Asked Questions (FAQs)

1. Why should I choose the C-Curve (CA310C) over a B-Curve MCB for my application?
You should choose the C-Curve if your circuit powers inductive loads. Unlike resistive loads (which use B-Curve), inductive loads like motors and air conditioners draw a higher current for a split second when starting. The C-Curve’s magnetic trip threshold (5-10x In) is higher than a B-Curve (3-5x In), which prevents the breaker from nuisance tripping during these normal startup surges.

2. Can this Live CA310C 10A MCB handle a 3-phase motor load?
Yes, the CA310C is ideally suited for 3-phase motor protection. The 10A rating and C-Curve characteristic are perfectly matched to protect the wiring and motor against overloads while accommodating the motor's starting inrush current.

3. What does the "6kA" rating mean in practical terms?
The 6kA rating indicates the maximum fault current (short-circuit current) the breaker can safely interrupt. In the event of a severe short circuit where the current spikes to thousands of amps, the 6kA rating guarantees that the Live CA310C will extinguish the electrical arc and break the circuit without welding its contacts or exploding, ensuring safety.

4. Is this a "fail-safe" device? How does it work?
Yes, it is fail-safe due to its thermo-magnetic design. Inside, there are two elements: a bimetallic strip that bends slowly under sustained overload (heat) to trip the breaker, and an electromagnet that instantly trips the breaker during a high-current short circuit. Both mechanisms are mechanical and operate independently of external power.

5. What is the maximum ambient temperature for this device to function accurately?
The Live CA310C is calibrated to perform accurately at a reference temperature of 30°C. However, it can operate safely in ambient temperatures ranging from -5°C up to +40°C (provided the daily average does not exceed 35°C). If installed in a consistently hotter environment, de-rating factors may need to be considered.