During technical comparisons, EL2004 appears alongside Beckhoff El9410, El9550 Beckhoff and Beckhoff El2809 so engineers assess signal types, ingress protection, and ambient tolerances accurately.
EL2004 - Beckhoff EtherCAT Terminal
The Beckhoff EtherCAT Terminal EL2004 is a 4-channel digital output module designed for reliable 24 V DC switching, ideal for automation and control in industrial systems.

| Brand | Beckhoff |
| Product Type | EtherCAT Terminal |
| Product | EL2004 |
EL2004 Beckhoff EtherCAT Terminal Technical Specifications
| Specification | Value |
|---|---|
| Connection technology | 2-wire |
| Nominal voltage | 24 V DC (-15%/+20%) |
| Current consumption power contacts | typ. 15 mA + load |
| Current consumption E-bus | typ. 100 mA |
| Electrical isolation | 500 V (E-bus/field potential) |
| Configuration | no address or configuration setting |
| Weight | approx. 55 g |
| Operating temperature | -25…+60°C |
| Storage temperature | -40…+85°C |
| Relative humidity | 95%, no condensation |
| Vibration/shock resistance | conforms to EN 60068-2-6/EN 60068-2-27 |
| EMC immunity/emission | conforms to EN 61000-6-2/EN 61000-6-4 |
| Protect. rating/installation pos. | IP20/variable |
| Approvals/markings | CE, CCC, UL, ATEX, IECEx, DNV GL |
| Ex marking | ATEX:II 3 G Ex ec IIC T4 GcIECEx:Ex ec IIC T4 Gc |
| Housing - Design form | compact terminal housing with signal LEDs |
| Housing - Material | polycarbonate |
| Housing - Dimensions (W x H x D) | 12Â mm x 100Â mm x 68 mm |
| Housing - Installation | on 35 mm DIN rail, conforming to EN 60715 with lock |
| Housing - Side by side mounting by means of | double slot and key connection |
| Housing - Marking | labeling of the BZxxxx series |
| Housing - Wiring | solid conductor (s), flexible conductor (st) and ferrule (f): spring actuation by screwdriver |
| Housing - Connection cross-section | s*: 0.08â¦2.5 mm²,st*: 0.08â¦2.5 mm²,f*: 0.14â¦1.5 mm² |
| Housing - Connection cross-section AWG | s*: AWG28...16,st*: AWG22...16,f*: AWG26...19 |
| Housing - Stripping length | 8…9 mm |
| Housing - Current load power contacts | Imax: 10 A |
| Bit width in the process image | 4 outputs |
| Short-circuit current | typ. < 2 A |
| Load type | ohmic, inductive, lamp load |
| Max. output current | 0.5 A (short-circuit proof) per channel |
| Reverse voltage protection | yes |
| Breaking energy | < 150 mJ/channel |
| Switching times | typ. TON: 60 µs, typ. TOFF: 300 µs |
The Beckhoff EtherCAT Terminal EL2004 is engineered with 4 digital outputs using 2-wire connection technology and operates at a nominal 24 V DC. Each channel supports a maximum 0.5 A output current with short-circuit protection, reverse polarity protection, and breaking energy below 150 mJ/channel. With switching times of 60 µs (TON) and 300 µs (TOFF), the EL2004 EtherCAT Terminal ensures fast and efficient output response. Electrical safety is enhanced by 500 V isolation between the E-bus and field potential, while a low 100 mA E-bus current draw improves efficiency. Its polycarbonate housing, IP20 protection, and international approvals such as CE, UL, ATEX, IECEx, and CCC confirm its reliability in global industrial use.
The Beckhoff EL2004 EtherCAT Terminal is widely applied in machine automation, lighting control, valve actuation, and material handling. Its ability to switch ohmic, inductive, and lamp loads provides versatility across diverse systems. Engineers value its compact design and DIN rail mounting, which simplify integration in control panels. Maintenance teams benefit from spring-actuated wiring for easy handling, while system integrators appreciate the module’s seamless compatibility with EtherCAT networks for precise and synchronized control.
Trusted across industries including automotive, packaging, electronics, and logistics, the Beckhoff EtherCAT Terminal EL2004 combines speed, safety, and durability. Its robust specifications and certifications make it a dependable solution for long-term automation projects where reliable 24 V DC switching is critical.







