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WAGO 857 Series Relay Module - 24-230V AC/DC 6A SPDT-CO

WAGO 857 Series Relay Module - 24-230V AC/DC 6A SPDT-CO

This WAGO 857-359 relay module is designed for DIN rail mounting and features a miniature switchin...

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eBayWAGO 857-304 24VDC 6A SPDT-CO DIN Rail Mountable Relay Module
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OnBuy.comWago 857-304 24Vdc 6A Spdt-Co Din Rail Mountable Relay Module Yellow 4050821797807
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Tameson UKWago Yellow 857-304 Relay Module 24Vdc 6A Single Changeover - 857-304
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eBayWAGO Relay Module 857-304 Dc 24 V 1 Changer Elementarrelais 857-152
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Product Information

Full details

This WAGO 857 Series Relay Module is designed for industrial automation engineers and system integrators seeking reliable electrical isolation between control systems and sensor/actuator levels. Its key benefit is the secure separation of circuits using a miniature switching relay with versatile voltage input and easy Push-in cage clamp connections. A potential caveat is its 6mm width, which requires precise DIN rail placement in dense control cabinets.

All features

Series857
Model Part Number857-359
BrandWAGO

Extended Product Information

FAQs

What is the maximum switching current for this relay module?

The module is designed for normal switching power and typically supports a current of up to 6A, depending on the voltage and load type. Always consult the datasheet for precise specifications under various conditions.

Can this module be used with 12V DC control voltage?

No, the rated control supply voltage range is 24 to 230V AC/DC. A 12V DC input would be outside this specified range and may not function correctly or could potentially damage the module.

How do I ensure a secure connection with Push-in cage clamps?

Strip the wire insulation to the length indicated on the module and simply push the solid conductor firmly into the terminal opening. To release, use a suitable screwdriver or operating tool (if applicable for the specific terminal type) to depress the lever or opening.

What does SPDT-CO mean for the contact configuration?

SPDT-CO stands for Single Pole Double Throw - Change Over. This means the relay has one set of contacts that can connect either to a normally closed (NC) contact or a normally open (NO) contact, controlled by the relay's energized state.

Is this module suitable for high-temperature environments?

The module has a standard operating temperature range. It is designed for typical industrial control cabinet conditions. For extreme temperatures, consult the product's technical datasheet for specific operating limits.

Can I use this module to switch AC and DC loads interchangeably?

Yes, the SPDT-CO contact configuration allows it to switch both AC and DC loads, provided the load's voltage and current are within the module's specified limits and the correct terminal (NO or NC) is used.

Troubleshooting

Relay does not energize when control voltage is applied.

Verify the control supply voltage is within the 24-230V AC/DC range and correctly connected to the input terminals. Ensure the LED indicator is illuminated when voltage is applied.

Switching contacts are not changing state.

Confirm that the relay coil is properly energized (check LED status). Ensure the load connected to the contacts is within the module's switching capacity (e.g., 6A). Check wiring to the NO/NC/Common terminals.

Intermittent operation or poor connection.

Ensure wires are stripped correctly and fully inserted into the Push-in cage clamp terminals. Check that the DIN rail is properly grounded if required by your installation standards. Vibration can sometimes loosen connections; re-seat wires firmly.

Pros and Cons

Pros

  • Easy and fast wiring with Push-in cage clamp technology.
  • Wide voltage flexibility (24-230V AC/DC) for diverse applications.
  • Compact size saves valuable space in control cabinets.
  • Provides crucial electrical isolation for system protection.
  • Clear visual status indication via LED.

Cons

  • Limited switching capacity suitable for normal switching power, not high-power loads.
  • IP20 protection rating means it's suitable for dry, indoor environments only.
  • The 6mm width may require careful planning in densely populated panels.

Setup, Compatibility & Care

Setup:

  1. Ensure the module is powered off before wiring.
  2. Mount the module onto a standard DIN rail (35mm).
  3. Connect the control supply voltage to the designated input terminals using the Push-in cage clamp connections. Strip wire ends to the appropriate length (refer to markings on the module) and insert into the appropriate terminals for coil energization.
  4. Wire the switching contacts (Common, Normally Open, Normally Closed) according to your circuit design.
  5. Verify all connections are secure.

Compatibility:

  • Compatible with standard 35mm DIN mounting rails.
  • Suitable for use with control voltages ranging from 24V to 230V AC/DC.
  • Designed for normal switching power applications. Check current and voltage ratings for your specific load.

Care:

  • Keep the module in a dry, dust-free environment. The IP20 rating necessitates protection from moisture and solid foreign objects.
  • Clean the exterior of the module with a dry or slightly damp cloth. Avoid using solvents or abrasive cleaners.
  • Periodically check for secure connections, especially in vibration-prone environments.

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