SHELLY EM GEN3 specification sheet

Overview:

Shelly EM Gen3 + 50A Clamp Power Meter
Gain precise control over your energy usage with Shelly EM Gen3 . Designed for real-time monitoring, this smart power meter gives you actionable insights into the electricity consumption of your devices, helping you optimize efficiency and reduce costs.

Description:

Shelly EM Gen3 allows homeowners and facility managers to track power usage with high accuracy. It supports Wi-Fi and Bluetooth connectivity, can connect up to two current transformers, and logs energy data locally for 10 days in 1-minute intervals. With support for smart schedules, scripting, and advanced automation protocols, it integrates seamlessly into modern smart home systems. The included 50A clamp ensures you can start monitoring immediately.

Features:

How Shelly EM Gen3 Works
Shelly EM Gen3 provides live power consumption data for your connected devices, revealing energy patterns and helping you identify opportunities to save. Its dual-channel design supports single-phase monitoring, while the included current transformers enable contactless measurement. With local and cloud data logging, you can access historical energy data to make informed decisions.

Connectivity Options

• Connect directly via Wi-Fi without a hub
• Quick Bluetooth setup or use as a Bluetooth gateway
• Compatible with smart home automation systems

Power and Load Management

• Monitor up to two current transformers simultaneously
• Dry contact switch allows control of heavy-load appliances
• Track real-time voltage and current (110-240V AC, 0-80A)

Data Storage and Automation

• Logs stored locally for up to 10 days at 1-minute intervals
• Cloud storage extends data history up to 365 days
• Supports smart schedules, scripts, webhooks, and MQTT for custom automation

Practical Applications

Total Power Monitoring
Shelly EM Gen3 tracks your home's total energy consumption. Ideal for single-phase homes, it provides a clear view of usage patterns and enables automatic control of non-essential devices for energy savings.

Controlling High-Power Appliances
Manage energy-hungry appliances such as water heaters, heat pumps, or large kitchen equipment. Shelly EM Gen3 allows precise monitoring and contactor control to prevent energy waste.

Appliance Health Monitoring
Identify unusual energy consumption trends to detect potential appliance issues early. Monitoring individual device usage helps maintain efficiency and prolong appliance lifespan.

Advanced Gen3 Series Benefits

Ready for Future Updates
Gen3 devices are designed to be upgradable to Matter, offering new smart home capabilities and broader integration options.

Increased Memory for Better Performance
Equipped with an 8MB Shelly chip, Gen3 devices ensure smoother operation and support more advanced functionalities.

Unified Smart Control
With virtual components in the Shelly Smart Control app, integrate and control both Shelly and third-party devices from a single interface for streamlined management.

Installation Guidance
Installation of certain Shelly devices should be performed by a qualified electrician or authorized installer to ensure safety and compliance.

Wiring Diagram Overview

Terminals & Connections

• O: Load circuit output
• L: Live wire (110-240V AC)
• I: Load circuit input
• N: Neutral wire
• IA: First channel current transformer input
• IB: Second channel current transformer input
• CTA: First channel current transformer
• CTB: Second channel current transformer

Shelly EM Gen3 + 50A Clamp is your all-in-one solution for real-time energy monitoring, smart automation, and appliance management, designed to help you save energy and maintain optimal device performance.

Specifications:

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Specifications
Product Code	SHELLY EM GEN3
Physical
Size (HxWxD)	37x42x16 mm / 1.46x1.65x0.63 inch
Weight	EM Gen3 - 23 g / 0.81 oz
	CT 50A - 50 g / 1.76 oz
Screw terminals max torque	0.4 Nm / 3.5 lbin
Conductor cross section	0.2 to 2.5 mm² / 24 to 14 AWG (solid, stranded, and bootlace ferrules)
Conductor stripped length	6 to 7 mm / 0.24 to 0.28 in
Mounting	Wall console, Electrical cabinet
Shell material	Plastic
Shell color	White
	Charcoal gray
Connectors color	Black
Environmental
Ambient working temperature	-20 degreesC to 40 degreesC / -5 degreesF to 105 degreesF
Humidity	30 % to 70 % RH
Max. altitude	2000 m / 6562 ft
Electrical
Power supply	110 - 240 V~ 50/60 Hz
Power consumption	< 1.2 W
Neutral not needed	Yes or No
External protection	2 A, tripping characteristic B or C
	6 kA interrupting rating
	Energy limiting class 3
Output circuits ratings
Max. switching voltage	240 V~
Max. switching current	2 A/240 V~
Sensors, meters
Voltmeter (AC)	110-240 V~ 50/60 Hz
Voltmeter accuracy	±2%
Ammeter (AC)	0 - 80A
Ammeter accuracy	±2 % (2 - 50 A), ±2 % (1 - 2 A), ±5 % (0 - 1 A)
Compatible current transformers	CT 50A (included in the package)
	CT 80A
Power and energy meters	Active and apparent power
	Active and apparent energy
	Power factor
	Fundamental active and fundamental reactive energy
Channel-to-channel calibration minimum load	500 W
No load threshold	30 VA per channel
Measurement data storage	At least 10 days of 1 min data resolution
Data export	CSV for PQ recorded values
	JSON format export through RPC
Internal-temperature sensor	Yes
Wi-Fi
Protocol	802.11 b/g/n
RF band	2412 - 2472 YesHz
Max. RF power	< 20 dBm
Range	Up to 30 m / 100 ft indoors and 50 m / 160 ft outdoors
	(Depends on local conditions)
Bluetooth
Protocol	4.2
RF band	2402 - 2480 MHz
Max. RF power	< 4 dBm
Range	Up to 10 m / 33 ft indoors and 30 m / 100 ft outdoors
	(Depends on local conditions)
Microcontroller unit
CPU	ESP-Shelly-C38F
Flash	8 MB
Firmware capabilities
Schedules	Yes
Webhooks (URL actions)	20 with 5 URLs per hook
Scripting	Yes
MQTT	Yes
Encryption	Yes (Transport level)
Authentication	Yes (Application and transport level)