Shelly Pro 3CB C63 smart 3-pole circuit breaker, 63 A
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Choose countryThe Shelly Pro 3CB C63 is a smart 3-pole circuit breaker rated at 63 A, with a C trip characteristic and a 6 kA short-circuit breaking capacity. It protects electrical circuits against overloads, short circuits, overvoltage and undervoltage.
Connected control and automation
Wi-Fi, Bluetooth and Ethernet connectivity support remote switching of the circuit. Use the Shelly Smart Control app, schedules and automation scripts for control, with MQTT, HTTP and WebSocket support for integration into smart home and building management systems.
- Voltage monitoring: a built-in voltmeter measures mains voltage with ±5% accuracy.
- Remote control lockout: a built-in safety switch lets you disable remote control.
- Event history: review up to 100 event entries.
Installation and measurement limits
The breaker mounts on a DIN rail and uses a 230 V AC, 50 Hz supply. It includes an internal temperature sensor. It measures voltage, but does not measure current, power or energy consumption.
| Manufacturer | Shelly |
|---|---|
| Model | Pro 3CB C63 |
| Device type | Smart circuit breaker |
| Number of poles | 3 |
| Rated current | 63 A |
| Tripping characteristic | C |
| Rated short-circuit capacity | 6 kA |
| Supply voltage | 230 V AC, 50 Hz |
| Minimum operating voltage | 160 V AC |
| Electronics power consumption | Less than 3 W |
| Circuit breaker power loss | 16.80 W |
| Energy limitation class | 3 |
| Insulation voltage | 500 V |
| Impulse withstand voltage | 4 kV |
| Protection functions | Overload, short circuit, overvoltage and undervoltage |
| Mains voltage measurement (AC) | Yes |
| Voltage measurement accuracy | ±5% |
| Voltage monitoring | Yes, in volts (V) |
| Current measurement (A) | No |
| Power measurement (W) | No |
| Energy consumption measurement (kWh) | No |
| Internal temperature sensor | Yes |
| Connectivity | Wi-Fi 2.4 GHz, Bluetooth 4.2, Ethernet (RJ45) |
| Supported protocols | MQTT, HTTP, WebSocket |
| Remote control | Yes |
| Schedule support | Yes |
| Automation script support | Yes |
| Event history | Up to 100 entries |
| App | Shelly Smart Control |
| Installation | DIN rail |
| Dimensions | 93 × 72 × 76 mm |
| Weight | 465 g |
| Housing material | Plastic |
| Colour | Light grey |
| Operating temperature | -5 °C to 40 °C |
| Operating humidity | 30–70% RH |
| Electrical life | Over 6 000 cycles |
| Mechanical durability | Over 10 000 cycles |
| Built-in safety switch | Allows remote control to be disabled |
| EAN | 3800238074098 |
|---|
Does this circuit breaker measure energy consumption?
No. It measures and monitors mains voltage in volts with ±5% accuracy, but does not measure current, power or energy consumption.
Can remote control be disabled?
Yes. The built-in safety switch allows you to disable remote control.
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