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- R 5 899.00
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- First indexed
- 15 Sep 2026
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- FirstShop
Shelly Pro 3EM-400A Relay With 3 x 400A Clamps Shelly Pro 3EM-400 is a DIN rail mountable three-phase energy meter. Enhanced with all the gen2 firmware flexibility and LAN connectivity, it provides professional integrators with additional options for end-customer solutions. Shelly Pro 3EM-400 reports accumulated energy as well as instantaneous voltage, current, and power factor per phase in real-time. Can measure up to 400 A for each phase and the neutral 4 quadrant measurement with multiple connection types Accuracy Class B active energy (Compliance with IEC 62053-21 based on manufacturer testing) Photovoltaic ready Phase sequence error detection (option) Optical pulse indication of energy usage Measurement accuracy tо 1% Stores data in non-volatile memory that can be retrieved for a period of up to 60 days in 1-minute intervals Package includes 3 pieces of 400 A Current Transformers 4-quadrant measurement Measure capacitive and inductive load types of active imported and exported energies Accuracy class B (active energy) Shelly Pro 3EM-400 has a measurement accuracy of 1%. MODBUS support Allows for easy and fast deployment in existing industrial installations.. Wi-Fi, LAN, and Bluetooth connectivity Simultaneous Ethernet and Wi-Fi usage. MQTT, inbound and outbound WebSocket, UDP, mTLS support. Power Monitoring Monitors mono-phase electrical systems with up to 3 points simultaneously. Fast notifications and at least 60 days of 1-minute records storag Scripting functionalities Shelly Pro 3EM-400 fully supports mjS scripting, allowing you to create further features and functionalities. Specifications Size (HxWxD): 94x19x69 ±0.5 mm / 3.70x0.75x2.71 ±0.02 in Weight: 62 ±1 g / 2.19 ±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 Ambient temperature: -20 °C to 40 °C / -5 °F to 105 °F Humidity: 30 % to 70 % RH Max. altitude: 2000 m / 6562 ft Power supply voltage AC: 110 - 240 V, 50/60 Hz Power supply voltage DC: N/A Power consumption: < 3 WSensors, meters Temperature sensor: Yes Voltmeters (RMS for each phase): 100 - 260 V Voltmeters accuracy: ±1 % Ammeters (RMS via CT for each phase and the Neutral): 0 - 400 A Ammeters accuracy: ±1 % (5 - 400 A), ±2 % (0- 5 A) Power and energy meters: Active and apparent power, Active and apparent energy, Power factor, Fundamental active and fundamental reactive energy 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 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) CPU: ESP32-D0WDQ6 Flash: 16 MB Webhooks (URL actions): 20 with 5 URLs per hook Scripting: mJS MQTT: Yes CoAP: No
