Product Description

Siemens 7RQ0202-1DX00 Relay Socket – 4 Changeover Contacts, 8-Pin, 7A, PCB Mount

The Siemens 7RQ0202-1DX00 is a PCB-mounted relay socket designed for compatible 4 changeover contact (4CO) plug-in relays. It has an 8-pin connection arrangement and is rated for 7 A applications. Siemens' official 7RQ plug-in relay brochure identifies 7RQ0202-1DX00 as the PCB mounting socket for 4 CO, 7 A relays.

For SB Smart, this product is positioned as a Siemens industrial relay accessory for PCB control boards, relay interfaces, industrial control circuits, electrical panels, maintenance and replacement applications.

Siemens 7RQ0202-1DX00 Relay Socket

The 7RQ0202-1DX00 belongs to the Siemens SINOVA 7RQ plug-in relay accessory range. The socket provides the mechanical and electrical interface between a compatible relay and the printed circuit board.

The Siemens 7RQ documentation lists the article specifically under PCB mounting socket, with the corresponding relay configuration of 4 changeover contacts and 7 A.

4 Changeover Contacts

The compatible relay configuration provides 4 changeover contacts (4CO).

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

With four changeover contacts, the relay can support multiple independent switching functions in one compact device.

Typical applications include:

• Control circuits

• Status signalling

• Interlocking

• Signal switching

• Machine-control circuits

• Auxiliary switching

The actual application depends on the relay's contact ratings and the control-circuit design.

8-Pin Connection

The 7RQ0202-1DX00 is the 8-pin PCB-mounted socket for the 4CO relay configuration. Current product listings identify the article as an 8-pin, 4CO, 7 A PCB-mounted socket.

The relay used with the socket must have the matching pin configuration and compatible mechanical dimensions.

7 A Rating

The exact socket is specified for the 7 A, 4CO relay configuration. Siemens' official 7RQ documentation identifies the PCB mounting socket article together with the 4 CO, 7 A relay category.

When selecting the relay assembly, the actual load should be evaluated against the ratings of the complete relay and socket arrangement rather than the socket rating alone.

PCB Mounting

The 7RQ0202-1DX00 is designed for printed-circuit-board mounting.

This mounting method provides a compact arrangement for industrial electronic control boards and relay interface circuits.

Siemens' official data gives the PCB socket dimensions as approximately:

• Width: 22 mm

• Depth: 11 mm

• Height: 30 mm

• Weight: 8 g

These dimensions are useful when planning PCB layout and component spacing.

Relay Socket Function

A relay socket provides both mechanical support and electrical connection for the compatible plug-in relay.

The relay itself can be removed from the socket without removing the PCB-mounted socket, which can simplify maintenance and relay replacement.

This arrangement is useful when repeated servicing or replacement of plug-in relays is expected.

Suitable for Plug-In Relays

The 7RQ0202-1DX00 is specifically part of the Siemens 7RQ plug-in relay system. Siemens lists the corresponding 4CO, 7 A relay socket under the PCB mounting category.

For proper operation, the relay should match:

• Contact configuration

• Pin arrangement

• Mechanical dimensions

• Coil configuration

• Electrical ratings

Industrial Control Applications

The 7RQ0202-1DX00 can be used in compatible applications such as:

• Industrial control boards

• Relay interface circuits

• Machine-control equipment

• Electrical control systems

• Signal switching circuits

• Process-control panels

• Industrial electronics

• Maintenance and replacement applications

Its PCB mounting makes it particularly suitable where relay sockets need to be integrated directly into an electronic board.

Compact Relay Interface

A PCB-mounted socket can help organize relay circuitry without additional panel wiring.

The 7RQ0202-1DX00 can support:

• Compact board design

• Organized relay placement

• Plug-in relay replacement

• Reduced point-to-point wiring

• Standardized relay interfaces

• Easier maintenance

Difference from DIN Rail Version

The Siemens 7RQ range provides separate sockets for PCB mounting and DIN rail mounting.

For the 4CO, 7 A configuration:

7RQ0202-1DX00 – PCB mounting

7RQ0201-1DX00 – DIN rail mounting

The correct article should therefore be selected according to the intended installation method.

Difference from 7RQ0202-1BX00

The 7RQ0202-1BX00 is a PCB-mounted socket for a different relay contact configuration, while 7RQ0202-1DX00 is the 4CO, 7 A PCB socket.

Siemens' official table identifies:

• 7RQ0202-1AX00 – 1CO

• 7RQ0202-1BX00 – 2CO

• 7RQ0212-1BX00 – 2CO

• 7RQ0202-1DX00 – 4CO, 7 A

This makes exact contact and mounting selection important when replacing a socket.

Replacement and Maintenance

The 7RQ0202-1DX00 can be used where an existing PCB-mounted socket for a compatible 4CO relay needs replacement.

Before ordering, verify:

• Relay article number

• Number of changeover contacts

• Pin arrangement

• PCB footprint

• Current rating

• Coil configuration

• Socket mounting method

This prevents selecting a visually similar socket with a different pin layout.

Siemens SINOVA 7RQ Socket Range

The official Siemens 7RQ brochure lists these socket configurations:

The official brochure confirms the article-number and mounting-method relationship.

Standard Package Quantity

Published Siemens pricing information lists the 7RQ0202-1DX00 with a standard package quantity of 10 pieces.

For actual purchase quantities, current supplier packaging and minimum-order requirements should be checked.

Suitable for Electrical Panel Builders and Industrial Buyers

The Siemens 7RQ0202-1DX00 is relevant for:

• Electrical panel builders

• PCB designers

• Industrial buyers

• Maintenance departments

• Electrical contractors

• Machine builders

• OEM maintenance teams

• Electrical product dealers

• Replacement-part procurement

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

The electrical configuration and PCB dimensions are from Siemens' official 7RQ brochure; the package quantity is from published Siemens pricing data.

Key Features

• Siemens SINOVA 7RQ relay socket

• Article number 7RQ0202-1DX00

• 4 changeover contacts

• 8-pin relay interface

• 7 A rating

• PCB mounted

• Compact 22 × 11 × 30 mm socket dimensions

• Approximate weight 8 g

• Designed for compatible plug-in relays

• Suitable for industrial control boards and relay interfaces

Benefits

• PCB mounting: Enables direct integration into control boards.

• 4CO configuration: Supports four changeover switching functions through the compatible relay.

• 8-pin interface: Provides the required connection arrangement for the 4CO relay.

• 7 A rating: Suitable for compatible relay applications within the specified rating.

• Compact size: Helps optimize PCB space.

• Plug-in relay design: Makes relay replacement easier than permanently soldered relay arrangements.

• Siemens standardized system: Simplifies replacement and procurement.

Why Choose Siemens 7RQ0202-1DX00?

The Siemens 7RQ0202-1DX00 is a dedicated 8-pin PCB-mounted relay socket for 4CO, 7 A plug-in relays. Siemens' official documentation confirms its PCB mounting category and the 4 CO, 7 A configuration, with a compact socket size of approximately 22 × 11 × 30 mm.

It is suitable for customers looking to buy or source Siemens relay sockets for PCB-based industrial control, machine-control circuits, electrical panels, maintenance and replacement requirements.

For SB Smart, this product is best presented as a Siemens industrial relay accessory for PCB mounting, supply and procurement across India.

Delivery Across India

SB Smart supplies Siemens industrial electrical products and relay accessories 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 7RQ0202-1DX00?

The 7RQ0202-1DX00 is a Siemens PCB-mounted relay socket for 4 changeover-contact relays, rated for 7 A.

2. How many pins does it have?

It is the 8-pin socket for the 4CO relay configuration.

3. What is the current rating?

The specified rating is 7 A.

4. What does 4CO mean?

4CO means four changeover contacts. Each changeover contact provides a common, normally open and normally closed path through the compatible relay.

5. Is it PCB mounted?

Yes. The 7RQ0202-1DX00 is specifically the PCB mounting socket.

6. What are the socket dimensions?

Siemens' official data lists approximately 22 mm width, 11 mm depth and 30 mm height, with a weight of about 8 g.

7. What is the DIN rail equivalent?

The corresponding DIN rail mounting socket for 4CO, 7 A is 7RQ0201-1DX00.

8. Can it be used with any 8-pin relay?

No. The relay must be mechanically and electrically compatible with the 4CO, 7 A 7RQ socket.

9. What is the standard package quantity?

Published Siemens pricing information specifies 10 pieces.

10. Where can I buy Siemens 7RQ0202-1DX00 in India?

SB Smart supplies Siemens industrial electrical products and relay accessories in India for industrial buyers, panel builders, PCB applications, maintenance requirements and replacement procurement.