Shelly
Shelly Pro EM-50. Smart Din Rail 2-Channel, Single Phase Energy Meter. Wi-Fi, LAN, and Bluetooth connection
Shelly Pro EM-50. Smart Din Rail 2-Channel, Single Phase Energy Meter. Wi-Fi, LAN, and Bluetooth connection
SKU:Pro EM-50
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Introducing the Shelly Pro EM-50, a DIN rail mountable two-channel, single-phase energy meter. It has an integrated switch with dry contacts for contactor control.
Accurate Energy Monitoring and Control
Shelly Pro EM-50 is a DIN-mountable 1-Phase Energy Meter with an integrated switch for contactor control. With active energy measurement accuracy of 1%, Shelly Pro ЕМ-50 can be used to monitor the consumption of and control any home appliances, electric circuits, and office equipment. It features 60 days of on-device historical data with a 1-minute resolution. Additionally, its scripting functionalities allow for the execution of complex scenes and provide broader monitoring abilities.
Characteristics:
- LAN, Wi-Fi and Bluetooth connection for high security and reliability
- Reports accumulated energy, as well as instantaneous voltage, current, active and apparent power per phase in real time
- Power metering - two independent measurement channels on the same phase
- 4 Quadrant measurement with optical pulse indication of energy usage
- Can be used with contactors for bigger loads
- Accuracy Class B (IEC 62053-21)
- Photovoltaic ready
- Stores data in non-volatile memory that can be retrieved for a period of up to 60 days in 1-minute intervals.
- No hub required! Easy control through the Shelly Smart Control app, most platforms and protocols, as well as voice assistants. Use it with Alexa, Home Assistant, or your preferred automation system.
- Supports scripting, webhooks, MQTT, WebSocket, HTTPS, UDP, TLS and custom certificates & Modbus TCP protocol
Notes:
Package includes 2 pieces of 50A Current Transformers
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No hub required, Universally compatibleShelly Products can be controlled locally, directly and without a hub through your smartphone/table with Shelly App - no hub or other equipment needed. Enable cloud feature and get remote control from anywhere. At the same time, you can integrate Shelly directly with virtually every smart home hub, voice assistant, open source platform, or premium control system. |
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No hub required, Universally compatibleShelly Products can be controlled locally, directly and without a hub through your smartphone/table with Shelly App - no hub or other equipment needed. Enable cloud feature and get remote control from anywhere. At the same time, you can integrate Shelly directly with virtually every smart home hub, voice assistant, open source platform, or premium control system. |
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Wiring Diagram
| Physical | |
|---|---|
| Size (HxWxD): | 94x19x69 ±0.5 mm / 3.70x0.75x2.71 ±0.02 in |
| Weight: | 63 ±1 g / 2.22 ±0.05 oz |
| Mounting: | DIN rail |
| Screw terminals max torque: | 0.4 Nm / 4.43 lbin |
| Conductor cross section: | 0.5 to 2.5 mm² / 20 to 14 AWG (solid, stranded and bootlace lugs) |
| Conductor stripped length: | 6 to 7 mm / 0.24 to 0.28 in |
| Shell material: | Plastic |
| Color: | White |
| Environmental | |
| Ambient temperature: | -20 °C to 40 °C / -5 °F to 105 °F |
| Humidity: | 30 % to 70 % RH |
| Max. altitude: | 2000 m / 6562 ft |
| Electrical | |
| Power supply voltage AC: | 110 - 240 V, 50/60 Hz |
| Power supply voltage DC: | N/A |
| Power consumption: | < 3 W |
| Output circuits ratings | |
| Max switching voltage AC: | 240 V |
| Max switching voltage DC: | N/A |
| Max switching current: | 2 A |
| Sensors, meters | |
| Internal-temperature sensor: | Yes |
| Voltmeter (RMS): | 100 - 260 V |
| Voltmeters accuracy: | ±1 % |
| Ammeters (RMS via CT): | 0 - 50 A |
| Ammeters accuracy: | ±1 % (5 - 50 A), ±2 % (0 - 5 A) |
| Power and energy meters: | Active and apparent power |
| Active and apparent energy | |
| Power factor | |
| No load threshold: | 30 VA per phase |
| Measurement data storage: | At least 60 days of 1 min data resolution |
| Data export: | CSV for PQ recorded values |
| JSON format export through RPC | |
| Radio | |
| RF band: | 2400 - 2495 MHz |
| Max. RF power: | <20 dBm |
| Wi-Fi protocol: | 802.11 b/g/n |
| Wi-Fi Range: | Up to 30 m / 100 ft indoors and 50 m / 160 ft outdoors |
| (Depends on local conditions) | |
| Bluetooth Protocol: | 4,2 |
| Bluetooth Range: | Up to 10 m / 33 ft indoors and 30 m / 100 ft outdoors |
| (Depends on local conditions) | |
| MCU | |
| CPU: | ESP32-D0WDQ6 |
| Flash: | 16 MB |
| Firmware capabilities | |
| Webhooks (URL actions): | 20 with 5 URLs per hook |
| Scripting: | Yes |
| MQTT: | Yes |
| CoAP: | No |
| Shelly Pro EM-50 | Shelly Pro 3EM |
|---|---|---|
AC voltage per Channel | 100-260 volts 50/60Hz | 100-260 volts 50/60Hz |
Phases Supported | Single (same phase only) | Single, Split Single, Two, Three |
Number of CTs | 2 | 3 |
Max Amps/Channel | 50 | 120 or 400 |
Contactor Control | Yes | Requires Pro 3EM Switch Add-on |
Contactor AC | 100-260 volts 50/60Hz | 100-260 volts 50/60Hz |
Contactor DC | N/A | Up to 30 Volts |
Contactor Amperage | 2 amps | 2 amps |