Shelly Pro EM-50 Energy Meter with Contactor Control

The Shelly Pro EM-50 is a DIN rail-mounted, two-channel energy meter that provides real-time reporting of accumulated energy, voltage, current, and active power. With a precision accuracy of 1% margin of error, the EM-50 can monitor the energy consumption of home appliances, electrical circuits, or office equipment. It also supports custom scripting, enabling complex scenes and advanced reporting for sophisticated energy management.

£78.16 inc VAT

SKU: PRO-EM-50 Category:

EAN / Barcode: 3800235268148

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Description

The Shelly Pro EM-50 is capable of monitoring up to 50 amps of electrical current, making it ideal for smaller circuits or systems. It features two independent measurement channels on the same phase, allowing for separate power monitoring of multiple devices. The device includes 2 x 50A clamps for safe and accurate energy consumption monitoring across both channels.

It can also be paired with contactors to handle larger loads and stores data in non-volatile memory, allowing retrieval for up to 60 days in 1-minute intervals.

Like other Shelly devices, the Pro EM-50 is compatible with a variety of smart home platforms and voice assistants, including Amazon Alexa and Google Home.

Product Specifications

Physical and Performance Attributes

Weight228 grams
Dimensions (L x W x H)85 × 110 × 85 mm

Misc Product Attributes

Dimensions (HxWxD): 94 x19 x 69 mm / 3.70 x 0.75 x 2.71 in
Mounting: DIN rail
Ambient temperature: from -20 °C to 40 °C / from -5 °F to 105 °F
Humidity 30 % to 70 % RH
Max. altitude 2000 m / 6562 ft
Power supply: 100 – 260 VAC, 50/60Hz
Electrical consumption: < 3 W
Max. switching voltage: 240 VAC
Max. switching current: 2 A
Internal temperature sensor: Yes
Voltmeters (RMS for each phase): 100 – 260 V
Voltmeters accuracy: ±1 %
Ammeters (RMS via CT): 0 – 50 A
Ammeters accuracy:
±1 % (5 – 50 A)
±2 % (1 – 5 A)
Power and energy meters:
Active and apparent power
Active and apparent energy
Power factor
Measurement data storage: At least 60 days of 1 min data resolution
Data export:
CSV for PQ recorded values
JSON format export through RPC
External protection: max. 2 A, tripping characteristic B or C, 6 kA interrupting
Rating, energy limiting class 3
RF band: 2400 – 2495 MHz
Max. RF power: < 20 dBm
Wi-Fi protocol: 802.11 b/g/n
Wi-Fi operational range (depending on local conditions):
up to 50 m / 160 ft outdoors
up to 30 m / 100 ft indoors
Bluetooth protocol: 4.2
Bluetooth operational range (depending on local conditions):
up to 30 m / 100 ft outdoors
up to 10 m / 33 ft indoors
LAN/Ethernet (RJ45): Yes
CPU: ESP32
Flash: 16 MB
Schedules: 20
Webhooks (URL actions): 20 with 5 URLs per hook
Scripting: Yes
MQTT: Yes