How to Select an Interface Relay for PLC Outputs
A step-by-step guide to matching PLC output type, coil voltage and current, contact rating, and socket style when selecting an interface relay.
- Part number
- 6ES7923-5BC00-0CB0
- Model no
- Fully modular connection
SIMATIC S7-1500Siemens 6ES7923-5BC00-0CB0 SIMATIC S7-1500 Connecting Cable 50-Pin Unshielded 2.0m PLC Connection Module
Siemens 6ES7923-5BC00-0CB0: unshielded 50-pin round cable, 2.0 m, 32 channels, IDC, SIMATIC S7-1500 TOP Connect.
Description
About the Fully modular connection
About the Fully modular connection
The Siemens 6ES7923-5BC00-0CB0 is a pre-assembled, unshielded 50-pin round cable for the SIMATIC S7-1500 TOP Connect system, linking a front connector module to a connection module over 2.0 m. It carries 32 digital I/O channels through 0.14 mm² conductors terminated in IDC connectors, rated for 24 V DC operation up to 60 V DC maximum.
Selection Notes
Choose the unshielded variant when the front connector module and connection module carry only digital I/O channels; the SIMATIC TOP Connect system reserves the shielded design for connection modules that also carry analog signals, where the braided shield limits coupled noise on the analog path. Match the 2.0 m length to the physical distance between the front connector module and the connection module, since the 50-pole IDC terminations are fixed and not field-trimmable.
Specification
Full specification
General 9
| target system | SIMATIC S7-1500 |
|---|---|
| suitability for use | Digital I/O modules |
| suitability for interaction: input card PLC | Yes |
| suitability for interaction: PLC output card | Yes |
| suitability for use: digital signal transmission | Yes |
| suitability for use: analog signal transmission | No |
| product brand name | SIMATIC Top connect |
| product type designation | Fully modular connection |
| product designation | Pre-assembled round cable |
Electrical data 2
| operating voltage / at DC: rated value | 24 V |
|---|---|
| operating voltage / at DC: maximum | 60 V |
Connection method 11
| design of cable | Round cable |
|---|---|
| number of channels | 32 |
| wire length | 2 m |
| conductor cross section / rated value | 0.14 mm2 |
| Product component / with shield | No |
| number of poles | 50 |
| at the 1st interface | 50; cable side front connector module |
| at the 2nd interface | 50; on the connection module |
| connector type | IDC connector |
| type of electrical connection / on enclosure | Connector strip |
| type of electrical connection / in the field | Connector strip |
Show all 51 specifications ↓ Show less ↑29 more values in Identification, Standards, specifications, approvals, Environmental Product Declaration, Mechanical data, Additional information, Logistics.
Identification 10
| Part number | 6ES7923-5BC00-0CB0 |
|---|---|
| Type designation | Fully modular connection |
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 4025515153108 |
| ETIM class | EC000237 |
| eCl@ss | 27242220 |
Standards, specifications, approvals 1
| certificate of suitability: cULus approval | No |
|---|
Environmental Product Declaration 7
| Environmental Product Declaration | Yes |
|---|---|
| global warming potential [CO2 eq]: total | 4.612 kg |
| global warming potential [CO2 eq]: during manufacturing | 4.486 kg |
| global warming potential [CO2 eq]: during operation | 0 kg |
| global warming potential [CO2 eq]: after end of life | 0.011 kg |
| ambient conditions ambient temperature: during operation | 0 ... 60 °C |
| ambient conditions ambient temperature: during storage | -30 ... +70 |
Mechanical data 3
| outer diameter / of cable sheath | 10.3 mm |
|---|---|
| material / of the connection cable sheath | PVC |
| color / of cable sheath | Black |
Additional information 2
| other information | technical specifications apply to rated input voltage values and +25 °C ambient temperature (if not otherwise specified) |
|---|---|
| marketing text | The 50-pin round cable (unshielded) with a length of 2m represents the link between the front connector and connection module. This pre-assembled cable enables a trouble-free and safe signal flow. Even complex installations remain manageable and can be checked in the shortest possible time, which makes maintenance and expansion affordable. This pre-assembled connecting cable is part of the fully modular SIMATIC TOP connect connection for the fastest and safest system cabling. In addition to low wiring costs, error sources in cabling can be significantly reduced. Sensors and actuators from the peripherals are combined with the connection modules of SIMATIC TOP connect and connected to the SIMATIC S7-1500 via cable and front plug-in module. |
Logistics 6
| Net weight | 0.18 kg |
|---|---|
| Country of origin | Romania |
| Shipping weight | 0.68 kg |
| Ships from | Türkiye |
| Dispatch | — |
| Stock | On request |
Source: manufacturer data · Last verified: 01 Nov 2026
Documents
Documents for 6ES7923-5BC00-0CB0
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Quick answers
Questions about the Fully modular connection
Which supply voltage is Fully modular connection rated for?
The rated operational voltage of Fully modular connection is 24 V AC.
What is the HS code of Fully modular connection for customs?
The tariff (HS) code on file for Fully modular connection is 85444290.
What is the EAN of Fully modular connection?
The EAN (GTIN) of Fully modular connection is 4025515153108.
Where does Fully modular connection ship from, and how fast?
Fully modular connection ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival.
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Series
Siemens SIMATIC S7-1500
- Brand
- Siemens
- Series
- SIMATIC S7-1500
