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Once you receive your order confirmation email, your order will be processed within 2–3 business days (excluding weekends and public holidays).
Installation must be carried out by a qualified electrician.
Ensure power is switched off before installation.
Suitable for indoor use.
The Live CA310B Triple Pole MCB is a high-performance miniature circuit breaker designed to safeguard electrical distribution lines in residential, commercial, and industrial applications. Operating at AC 50/60Hz with a rated voltage of 230/400V, this 10A 3P MCB ensures reliable protection against overloads and short circuits. With a robust 6kA breaking capacity and a B-curve tripping characteristic, the CA310B is ideal for protecting cable circuits and highly resistive loads where inrush currents are minimal. Built with thermo-magnetic technology, it guarantees infrequent switching operations and long-lasting durability, making it an essential component for any modern electrical distribution board.
High Breaking Capacity: Rated at 6kA, ensuring safety and reliability during short-circuit conditions.
B-Curve Protection: Instantaneous tripping between 3-5 times the rated current, perfect for resistive loads and lighting circuits.
Robust Insulation: Impulse withstand voltage of 4000V and insulation voltage of 500V for enhanced safety.
Durable Operation: Designed for 8,000 electrical life cycles, ensuring long-term performance.
Wide Compatibility: Suitable for infrequent on/off switching and isolation of 400V distribution lines.
IP20 Protection: Safe for installation in standard distribution boards with protection against solid objects.
Easy Wiring: Terminal capacity up to 16mm² for flexible and secure cable connections.
| Specification | Details |
|---|---|
| Brand | Live |
| Model | CA310B |
| Product Type | Miniature Circuit Breaker (MCB) |
| Poles | 3P (Triple Pole) |
| Rated Current (In) | 10A |
| Tripping Curve | B Curve |
| Rated Voltage (Ue) | 230/400V AC |
| Rated Frequency | 50/60Hz |
| Rated Breaking Capacity | 6kA (6000A) |
| Insulation Voltage (Ui) | 500V |
| Rated Impulse Voltage (Uimp) | 4000V (1.2/50 µs) |
| Dielectric Test Voltage | 2 kV for 1 minute |
| Release Characteristic | Thermo-magnetic |
| Ambient Temperature | -5°C to +40°C (Daily average ≤35°C) |
| Reference Temperature | 30°C (for thermal element setting) |
| Storage Temperature | -25°C to +70°C |
| Electrical Life | 8,000 cycles |
| Contact Position Protection | IP20 |
| Terminal Capacity | 16mm² (Max) |
| Standards | IEC 60898 / Relevant standards |
1. What is the difference between a B-curve and a C-curve MCB?
The B-curve MCB (like the CA310B) trips instantly when the current reaches 3 to 5 times the rated current. It is specifically designed for resistive loads such as lighting circuits, water heaters, and household sockets. The C-curve (5-10x In) is better suited for inductive loads with higher inrush currents, like motors and transformers.
2. Can I use this Live CA310B 3P MCB for single-phase applications?
This specific model is a Triple Pole (3P) breaker. While it is primarily designed for 3-phase 400V systems, it can be used in single-phase applications by utilizing only one pole. However, for standard single-phase use, a 1P or 2P breaker is typically recommended.
3. What does the "6kA breaking capacity" mean?
The 6kA (6000 Amps) rating indicates the maximum short-circuit current that the circuit breaker can safely interrupt without causing damage to itself. It ensures that in the event of a major fault, the MCB will safely disconnect the circuit, protecting the wiring and downstream equipment.
4. What is the maximum cable size I can connect to this MCB?
You can connect cables up to a maximum size of 16mm² to the terminals of the Live CA310B MCB. This allows for secure and compliant wiring for 10A rated applications.
5. Is this circuit breaker suitable for outdoor installation?
The Live CA310B has an IP20 rating, which means it is protected against touch and solid objects larger than 12mm, but it is not waterproof. It should be installed inside a suitable electrical enclosure or distribution board that is rated for the specific outdoor or damp environment.
