BECKHOFF EL3403 EtherCAT Terminal 3-Channel Power Measurement Module

SKU EL3403

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12-month warranty
Free returns within 30 days

Manufacturer: BECKHOFF
Product No.: EL3403
Country of origin:Germany
Product Type: EtherCAT Terminals
Payment: T/T, Western Union
Weight: 75g
Dimensions: 12 mm x 100 mm x 68 mm
Shipping port: Xiamen
Warranty: 12 months

Description

To analyze three-phase AC power networks directly within the industrial fieldbus segment, the Beckhoff EL3403 provides precise, high-performance measurement values. This 3-channel analog input power measurement terminal is designed to calculate comprehensive electrical grid status parameters, including effective power, reactive power, apparent power, energy consumption, phase angle (cos phi), and frequency for each connected phase. Processing inputs up to 500 V AC directly, the module supports highly detailed diagnostics of energy distribution systems and industrial machinery. Non-intrusive current sensing up to 1 A (AC) is executed through external measuring transformers (such as x A/1 A), enabling flexible integration into existing power distribution frameworks.

Features

Mains-synchronous conversion with 16-bit resolution for premium signal acquisition.
Direct RMS value calculation for all applied voltage and current waveforms.
Comprehensive data calculation: delivers current, voltage, active/reactive/apparent power, energy, frequency, and phase angle values directly over the E-bus.
Optional single-phase operation mode for simplified monitoring on isolated lines.
Galvanic electrical isolation rating of 1500 V to isolate low-voltage logic from high-voltage measuring points.
Compact 12 mm design form factor optimizing space layout on industrial DIN rails.

Applications

Real-time energy management and sub-metering in industrial production facilities.
Dynamic load monitoring and diagnostic tracking on high-power three-phase AC motors.
Integration within power distribution plants and substation cabinets for utility tracking.
Predictive maintenance analytics based on power signature variations.

Technical Specifications

Manufacturer	BECKHOFF
Part Number / Model	EL3403
Technology	3-phase power measurement for alternating voltages
Number of Inputs	3 x current, 3 x voltage
Measuring Voltage	Max. 500 V AC 3~ (ULX-N: max. 288 V AC)
Measuring Current	Max. 1 A AC (via measuring transformers x A/1 A)
Resolution	1 uA, 0.1 mV, 10 mW (16-bit)
Measuring Error	0.5% relative to full scale value (U/I), 1% calculated values
Measuring Procedure	True RMS calculation
Conversion Time	Mains-synchronous
Electrical Isolation	1500 V
Current Consumption E-bus	Typ. 120 mA
Process Image Bit Width	62 byte PM input, 3 byte PM output
Operating Temperature	-25 to +60 degC
Storage Temperature	-40 to +85 degC
Relative Humidity	95%, non-condensing
Enclosure Protection Rating	IP20
Dimensions (W x H x D)	12 mm x 100 mm x 68 mm
Weight	Approx. 75 g

Connections and Interfaces

Connection Property	Specification
Wiring Method	Solid conductor (e), flexible conductor (f), and ferrule (a)
Actuation Method	Spring actuation by screwdriver
Connection Cross-Section (Solid/Stranded)	0.08 to 2.5 mm² (AWG 28 to 14)
Connection Cross-Section (With Ferrule)	0.14 to 1.5 mm² (AWG 26 to 16)
Stripping Length	8 to 9 mm
Current Load Power Contacts	Max. 10 A

Installation Guidelines

Mount the terminal onto a standard 35 mm DIN rail conforming to EN 60715, locking it firmly into place.
Ensure double slot and key mechanical connection is completely flush with adjacent terminals.
Route high-voltage measurement lines separated from low-voltage E-bus and signal lines to prevent noise coupling.
Install appropriate external current transformer shorting blocks for safety during troubleshooting or hardware swap-outs.

Compliance and Certifications

CE
UL listed
EMC Immunity/Emission: Conforms to EN 61000-6-2 / EN 61000-6-4
Vibration/Shock Resistance: Conforms to EN 60068-2-6 / EN 60068-2-27

FAQ

What parameters can the Beckhoff EL3403 calculate and display?

The EL3403 measures voltage, current, effective power, reactive power, apparent power, energy consumption, phase angle (cos phi), and frequency for each of the three channels.

Does the EL3403 support single-phase operation?

Yes, while the terminal is optimized for 3-phase power measurement on AC networks, it also supports optional single-phase configuration.

What is the maximum voltage input direct rating of the EL3403?

The terminal is rated for a maximum measuring voltage of 500 V AC 3-phase (with ULX-N rating at a maximum of 288 V AC).

How is the current measured using this EtherCAT terminal?

The module measures AC current up to 1 A, which is typically routed via external, standard measuring transformers configured as x A / 1 A.

What is the mechanical environmental protection rating of the EL3403?

The terminal has an IP20 protection rating and is designed for cabinet installation on a 35 mm DIN rail.

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30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our technical warranty.

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Global Express Shipping

Standard Delivery: 4-6 Business Days via DHL, FedEx, and UPS.
Express Dispatch: Same-day dispatch for in-stock orders placed before 2:00 PM (GMT+8).
Worldwide Coverage: Serving over 150 countries, including rapid delivery to Saudi Arabia and UAE.

Returns & Warranty

30-Day Guarantee: Returns accepted for in-stock products in original, factory-sealed packaging.
12-Month Warranty: Every industrial component is backed by our professional technical warranty.

Orders are processed and delivered Monday-Friday (excluding public holidays).

For full eligibility, restocking fees, and international return details, please view our official Refund & Return Policy .

TECHNICAL SPECIFICATIONS

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