Product Description

Siemens 7RQ0100-0DC00 Plug-In Relay – 4CO, 14-Pin, 5A, 24V DC

The Siemens 7RQ0100-0DC00 is a SINOVA 7RQ plug-in relay with 4 changeover contacts (4CO), a 14-pin configuration, a 5 A contact rating, and a 24 V DC control supply. Siemens' official 7RQ documentation identifies the exact article as the 24 V DC version of the 4CO, 5 A, 14-pin relay family, with an LED indicator across the coil.

Important product-title correction: the supplied title mentions 16 pin, but Siemens' official documentation identifies 7RQ0100-0DC00 as 14-pin. Several Indian listings use the incorrect 16-pin description, so the SB Smart product title should preferably be corrected to 14-pin for technical accuracy.

Siemens 7RQ0100-0DC00 Plug-In Relay

The 7RQ0100-0DC00 belongs to the Siemens SINOVA 7RQ plug-in relay family, designed for industrial control, switching, signalling and auxiliary circuit applications.

It provides four changeover contacts in a compact plug-in relay, allowing several independent switching functions to be handled through a single relay. Siemens lists the exact article in the 4CO, 5 A, 14-pin family with a 24 V DC control supply.

24 V DC Control Supply

The defining characteristic of 7RQ0100-0DC00 is its 24 V DC control supply.

Siemens lists the DC variants of this 4CO, 5 A, 14-pin relay family as:

• 6 V DC – 7RQ0100-0DA00

• 12 V DC – 7RQ0100-0DB00

• 24 V DC – 7RQ0100-0DC00

• 48 V DC – 7RQ0100-0DD00

• 110 V DC – 7RQ0100-0DE00

The control circuit should therefore provide the specified 24 V DC relay-coil voltage.

4 Changeover Contacts

The relay provides 4 changeover contacts (4CO).

Each changeover contact provides a common connection that switches between normally open and normally closed paths according to the relay state.

Four changeover contacts allow several separate switching functions to be handled from one relay.

Typical applications include:

• Control-circuit switching

• Auxiliary switching

• Status indication

• Signal transfer

• Electrical interlocking

• Alarm circuits

• Machine-control circuits

The connected load must remain within the applicable relay contact ratings.

14-Pin Configuration

The correct Siemens configuration for 7RQ0100-0DC00 is 14 pins. Siemens' official 7RQ selection and ordering data clearly identifies the 4CO, 5 A relay family as 14-pin.

This is important when selecting a compatible relay socket or replacing an existing relay.

The 16-pin description found on some distributor pages is inconsistent with Siemens' official documentation. For a technically accurate SB Smart product page, 14-pin should be used.

5 A Contact Rating

The 7RQ0100-0DC00 belongs to the 4CO, 5 A relay category.

The actual switching load should be considered according to the connected load type, operating voltage, switching frequency and applicable contact characteristics rather than relying only on the nominal current rating.

LED Indicator Across Coil

The relay includes an LED indicator across the coil. Siemens identifies the LED indicator as a standard feature of this 4CO, 5 A relay family.

The indicator can help during:

• Panel inspection

• Maintenance

• Troubleshooting

• Relay-status checking

• Identification of an energized relay

Plug-In Construction

The 7RQ0100-0DC00 uses a plug-in relay construction, allowing it to be installed into a compatible relay socket.

This design makes servicing more convenient because the relay can be removed from the socket without disturbing the fixed wiring.

Benefits of the plug-in arrangement include:

• Easy relay replacement

• Reduced maintenance time

• Convenient troubleshooting

• Reusable socket wiring

• Simplified panel servicing

Compatible Relay Sockets

For the Siemens 4CO relay family, compatible mounting sockets include:

7RQ0201-1DX00 – DIN rail mounting

7RQ0202-1DX00 – PCB mounting

The socket should be selected according to the required mounting arrangement and confirmed against the relay configuration.

Industrial Control Applications

The 7RQ0100-0DC00 can be considered for compatible applications such as:

• Industrial control panels

• Electrical cabinets

• Machine-control systems

• Process-control circuits

• Relay interface systems

• Equipment signalling

• Alarm circuits

• Status indication

• Auxiliary switching

• Industrial machinery

• Maintenance and replacement applications

Multiple Switching Functions

The 4CO configuration allows one relay to provide four changeover switching functions.

Depending on the control-system design, these contacts can be used for:

• Multiple status signals

• Control-signal distribution

• Electrical interlocking

• Alarm indication

• Auxiliary control

• Equipment monitoring

• Control-sequence functions

The exact application should be based on the electrical design and relay specifications.

Difference from 4CO AC Versions

The Siemens 7RQ0100 family also includes AC versions with the same 4CO, 5 A, 14-pin configuration:

• 24 V AC – 7RQ0100-0DM00

• 48 V AC – 7RQ0100-0DN00

• 110 V AC – 7RQ0100-0DP00

• 115 V AC – 7RQ0100-0DQ00

• 230 V AC – 7RQ0100-0DR00

The 7RQ0100-0DC00 is specifically the 24 V DC version.

Difference from 48 V DC Version

The 7RQ0100-0DD00 is the 48 V DC version, while 7RQ0100-0DC00 is the 24 V DC version. Both belong to the same 4CO, 5 A, 14-pin family but have different coil voltages.

The relay coil voltage must match the available control supply.

Difference from 24 V AC Version

The 7RQ0100-0DM00 is the 24 V AC version, while 7RQ0100-0DC00 is the 24 V DC version.

Although both use 24 V nominal control voltage, the AC and DC relay versions are different articles and should not be treated as interchangeable without checking the circuit requirements.

Difference from 4CO Relay Sockets

The 7RQ0100-0DC00 is the relay itself, while 7RQ0201-1DX00 and 7RQ0202-1DX00 are socket accessories used to mount compatible 4CO relay configurations.

This distinction is important when creating product listings and replacement recommendations.

Replacement and Maintenance

The 7RQ0100-0DC00 can be used where an existing installation requires a 4CO, 14-pin, 5 A, 24 V DC plug-in relay.

Before ordering, verify:

• Exact relay article number

• 24 V DC control supply

• 4CO contact configuration

• 14-pin arrangement

• Contact rating

• Compatible relay socket

• Existing control circuit

This is particularly important because some distributor listings incorrectly describe the article as 16-pin. Siemens' official documentation should be used as the primary reference.

Suitable for Electrical Panel Builders and Industrial Buyers

The Siemens 7RQ0100-0DC00 is relevant for:

• Electrical panel builders

• Industrial buyers

• Electrical contractors

• Machine builders

• Maintenance departments

• OEM maintenance teams

• Control-panel assemblers

• Electrical product dealers

• Replacement-part procurement

For SB Smart, the product is positioned around industrial electrical product supply and procurement.

Key Features

• Siemens SINOVA 7RQ plug-in relay

• Article number 7RQ0100-0DC00

• 4 changeover contacts / 4CO

• 14-pin configuration

• 5 A contact rating

• 24 V DC control supply

• LED indicator across coil

• Plug-in construction

• Compatible with Siemens 7RQ relay sockets

• Suitable for industrial switching, control and signalling applications

Benefits

• 4CO configuration: Provides four changeover switching functions from one relay.

• 24 V DC coil: Suitable for compatible 24 V DC control circuits.

• 5 A contact category: Suitable for compatible industrial switching applications within the specified rating.

• LED coil indication: Makes relay energization easier to identify during inspection.

• 14-pin design: Matches the official Siemens configuration for this 4CO relay family.

• Plug-in construction: Simplifies relay replacement and maintenance.

• Flexible installation: Compatible socket options are available for DIN rail and PCB mounting.

• Siemens standardized product: Simplifies identification and procurement.

Why Choose Siemens 7RQ0100-0DC00?

The Siemens 7RQ0100-0DC00 is a 4CO, 14-pin, 5 A plug-in relay with a 24 V DC control supply and LED indicator across the coil. Siemens' official product documentation confirms this exact configuration and distinguishes it from the corresponding AC and other DC voltage variants.

It is suitable for customers looking to buy or source Siemens 7RQ plug-in relays for industrial control panels, machine-control circuits, signalling, auxiliary switching, maintenance and replacement applications.

For SB Smart, this product is best presented as a Siemens industrial plug-in relay for supply and procurement across India.

Delivery Across India

SB Smart supplies Siemens industrial electrical products and 7RQ plug-in relays across Faridabad, Gurgaon/Gurugram, Delhi NCR, Haryana, Noida, Punjab, Mumbai and other major Indian cities.

Major delivery locations include:

• Faridabad

• Delhi

• Gurgaon/Gurugram

• Delhi NCR

• Noida

• Greater Noida

• Haryana

• Punjab

• Mumbai

• Pune

• Ahmedabad

• Bengaluru

• Hyderabad

• Chennai

• Kolkata

• Jaipur

• Chandigarh

• Lucknow

• Indore

• Surat

• Vadodara

• Nagpur

• Coimbatore

• And other major cities across India

Frequently Asked Questions

1. What is Siemens 7RQ0100-0DC00?

The 7RQ0100-0DC00 is a Siemens SINOVA 7RQ plug-in relay with 4 changeover contacts, 5 A rating and 24 V DC control supply.

2. How many pins does 7RQ0100-0DC00 have?

The correct Siemens configuration is 14 pins, not 16 pins.

3. What does 4CO mean?

4CO means the relay provides four changeover contacts, each having common, normally open and normally closed connections.

4. What is the control voltage?

The exact article is designed for 24 V DC.

5. What is the contact rating?

The relay belongs to the 4CO, 5 A category.

6. Does it have an LED indicator?

Yes. Siemens specifies an LED indicator across the coil.

7. Which DIN rail socket is compatible?

The corresponding DIN rail socket is 7RQ0201-1DX00.

8. Which PCB socket is compatible?

The corresponding PCB-mounted socket is 7RQ0202-1DX00.

9. Is the supplied 16-pin description correct?

No. Siemens' official documentation identifies 7RQ0100-0DC00 as 14-pin. Some distributor listings incorrectly show 16 pins, so the SB Smart listing should use the official 14-pin specification.

10. What is the difference between 7RQ0100-0DC00 and 7RQ0100-0DD00?

7RQ0100-0DC00 = 24 V DC

7RQ0100-0DD00 = 48 V DC

11. What is the difference between 7RQ0100-0DC00 and 7RQ0100-0DM00?

7RQ0100-0DC00 = 24 V DC

7RQ0100-0DM00 = 24 V AC

12. Where can I buy Siemens 7RQ0100-0DC00 in India?

SB Smart supplies Siemens industrial electrical products and 7RQ plug-in relays in India for industrial buyers, panel builders, maintenance requirements and replacement procurement.