Relay Component for Relay Output Modules

Product Specifications

Technical details and manufacturing context for Relay

Definition

Within a Relay Output Module, the relay serves as the core switching component that isolates low-power control signals from high-power load circuits, enabling safe and reliable control of industrial equipment such as motors, heaters, and solenoids. This electromechanical device operates on the principle of electromagnetic induction: when a control voltage is applied to the relay coil, it generates a magnetic field that attracts an armature, causing the connected contacts to change state (open or close), thereby switching the load circuit on or off. The relay is designed for use in electrical equipment manufacturing and is classified as a component. It is typically used in control panels, automation systems, and other applications where electrical isolation and switching are required. The relay's construction includes materials such as copper for the coil and contacts, iron for the magnetic circuit, and plastic for the housing and insulation. Key parameters include a coil voltage range of 5–24 V DC, contact current rating of 5–30 A (resistive load; derate for inductive loads), and a maximum contact voltage rating of 250 V AC. Coil power consumption ranges from 0.45–0.9 W, depending on coil voltage and relay size. Contact resistance is initially ≤50 mΩ at 6 V DC, 1 A. Insulation resistance is ≥1000 MΩ between coil and contacts at 500 V DC, and dielectric strength is 1500 V AC for 1 minute. Mechanical life is ≥10^7 operations (no load), and electrical life is ≥10^5 operations at rated resistive load. Operating temperature ranges from -40 to 85 °C, with storage temperature possibly wider. The enclosed relay has an IP rating of IP54 per IEC 60529; open types have lower ratings. Weight ranges from 10–30 g, depending on contact configuration and coil voltage. These values are directory reference ranges and must be confirmed for the actual model and application. Always verify model-specific values and standards with the legal manufacturer or supplier.

Working Principle

When a control voltage is applied to the relay coil, it generates a magnetic field that attracts an armature, causing the connected contacts to change state (open or close), thereby switching the load circuit on or off. The coil is energized by a low-power control signal, while the contacts handle the high-power load. This provides electrical isolation between the control and load circuits, protecting sensitive control electronics from high voltages and currents. The relay's mechanical action ensures a positive contact closure, and the spring returns the armature to its original position when the coil is de-energized.

Common Materials

Copper, Iron, Plastic

Technical Parameters

Parameter	Typical range	Notes & selection driver
Coil Voltage	5–24 V DC	Standard range; other voltages available on request.
Contact Current Rating	5–30 A	Resistive load; derate for inductive loads.
Contact Voltage Rating	250 V AC	Maximum switching voltage.
Coil Power Consumption	0.45–0.9 W	Depends on coil voltage and relay size.
Contact Resistance	≤50 mΩ	Initial value at 6 V DC, 1 A.
Insulation Resistance	≥1000 MΩ	Between coil and contacts at 500 V DC.
Dielectric Strength	1500 V AC	Between coil and contacts for 1 minute.
Mechanical Life	≥10^7 operations	No load; typical for electromechanical relays.
Electrical Life	≥10^5 operations	At rated resistive load.
Operating Temperature	-40–85 °C	Storage temperature may be wider.
IP Rating	IP54	For enclosed relay; open types have lower rating.IEC 60529
Weight	10–30 g	Depends on contact configuration and coil voltage.

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM

Coil
Generates magnetic field when energized to actuate the relay

Material: Copper wire
Armature Part
Movable iron part attracted by magnetic field to move contacts

Material: Iron
Contacts Part
Conductive surfaces that open or close to switch the load circuit

Material: Silver alloy
Spring Part
Returns armature to default position when coil is de-energized

Material: Steel

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Relay Output Module

View system integration details

Relay Module

View system integration details

Manufacturers of Relay

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Frequently Asked Questions

What is the typical coil voltage range for this relay?

The coil voltage range is 5–24 V DC, as listed in the directory. Other voltages may be available on request, but you must confirm with the manufacturer for your specific model.

What is the maximum contact current rating?

The contact current rating is 5–30 A for resistive loads. For inductive loads, derating is required. Always verify the actual rating for your application with the supplier.

What is the IP rating of this relay?

The enclosed relay has an IP rating of IP54 per IEC 60529. Open types have lower ratings. This rating indicates protection against dust and water splashes, but confirm with the manufacturer for your specific variant.

What is the mechanical life of the relay?

The mechanical life is ≥10^7 operations under no load, typical for electromechanical relays. Electrical life is ≥10^5 operations at rated resistive load. These are reference values; actual life depends on operating conditions.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification

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current:	Up to 30A (contact rating)
voltage:	Up to 600V AC/DC (contact rating)
temperature:	-40°C to +85°C (standard), up to +125°C (high-temp variants)
switching frequency:	Up to 10 Hz (mechanical life dependent)

Relay

Product Specifications

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