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
- 6ES7924-2CA20-0BC0
- Model no
- Fully modular connection
- ATEX
SIMATIC TOP connectSiemens 6ES7924-2CA20-0BC0 SIMATIC TOP Connect TP3 32-Channel Push-In LED PLC Connection Module
SIMATIC TOP connect TP3 module: 32 channels, 3-wire, push-in with LED, ATEX/IECEx/UKEX rated for S7-1500.
Description
About the Fully modular connection
About the Fully modular connection
The Siemens 6ES7924-2CA20-0BC0 is a SIMATIC TOP connect TP3 connection module with 32 channels and a 3-wire potential connection using push-in terminals with LED status indication, built for wiring SIMATIC S7-1500 digital I/O modules. It runs at 24 V DC (max 28.8 V) with up to 1 A per pin and 2 A total current, and carries ATEX, IECEx and UKEX hazardous-area ratings.
Certifications & Standards
- cULus
- IECEx
- ATEX
- ULhazloc
- UKEX
- CCC-Ex
- EEx e
- Environmental Product Declaration
Selection Notes
Push-in terminals combined with the per-channel LED give both fast wiring and at-a-glance diagnostics, at 0.34 kg versus 0.54 kg for the screw-terminal LED sibling since push-in hardware is lighter. LED signaling caps the supply at 28.8 V DC against 50 V DC on the non-LED TP3 variants, so confirm downstream loop voltage stays in range. The 33+33 L+/M terminal layout gives each of the 32 channels its own switched potential line rather than a shared rail, unlike the TP1 module's single shared potential connection.
Applications
Fully modular field wiring with local channel diagnostics for SIMATIC S7-1500 digital I/O where each channel needs its own switched potential line, including ATEX/IECEx/UKEX Zone 2 areas.
Specification
Full specification
General 5
| target system | SIMATIC S7-1500 |
|---|---|
| suitability for use | Digital I/O modules |
| product brand name | SIMATIC Top connect |
| product type designation | Fully modular connection |
| product designation | Connection module |
Electrical data 13
| operating voltage: at DC / rated value | 24 V |
|---|---|
| operating voltage: rated value | 24 V |
| operating voltage: at DC / maximum | 28.8 V |
| ampacity / per pin / maximum | 1 A |
| continuous current / at DC / per signal cable / maximum | 1 A |
| total current / maximum | 2 A |
| display version: as status display of the inputs/outputs | LED yellow for "active high" |
| display version: for power supply / power LED | Yes; green for 24 V DC O.K. |
| product function / infeed function | Yes |
| product component: PE connection | No |
| product component: shield connection | No |
| product component: disconnector | No |
| product feature / cross-connectable | No |
Connection method 17
| number of terminals | 98; 32 x I/O; 33 x L+, 33 x M |
|---|---|
| number of channels | 32 |
| type of connecting terminal | push-in |
| position / of the terminal | Top |
| number of terminal levels | 1 |
| design of terminal / terminal levels internally linked | No |
| type of electrical connection / for connecting cable | Plug-in connection |
| number of poles / at the 1st interface | 50; IDC connector with installed strain relief for the connecting cable |
| number of the plug contacts / of the electrical connection | 1 |
| wire length / maximum | 30 m; between front connector module and Connection module |
| type of connectable conductor cross-sections / solid | No |
| connectable conductor cross-section: for flexible conductor / with core end processing | 0.2 ... 2.5 mm2; End sleeve according to DIN 46228/1 or DIN 46228/4 with plastic collar |
| connectable conductor cross-section: stranded | 0.2 ... 2.5 mm2 |
| connectable conductor cross-section: finely stranded / without core end processing | 0.2 ... 2.5 mm2 |
| connectable conductor cross-section: finely stranded / with core end processing | 0.2 ... 2.5 mm2 |
| number of cables / per connection | 2; Connection for internal system: Combination of 1 or 2 Wires until the sum total of cross sections be achieved in a ferrule. |
| width of screwdriver blade | 3.5 mm |
Show all 83 specifications ↓ Show less ↑48 more values in Identification, Standards, specifications, approvals, Standards, specifications, approvals / Environmental Product Declaration, Ambient conditions, Mechanical data, Additional information, Version Classification, Logistics.
Identification 10
| Part number | 6ES7924-2CA20-0BC0 |
|---|---|
| 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 | 4025515153870 |
| ETIM class | EC000900 |
| eCl@ss | 27250112 |
Standards, specifications, approvals 10
| certificate of suitability: cULus approval | Yes |
|---|---|
| certificate of suitability: IECEx | Yes |
| certificate of suitability: ATEX | Yes |
| certificate of suitability: ULhazloc approval | Yes |
| certificate of suitability: UKEX | Yes |
| certificate of suitability: CCC / for hazardous zone according to GB standard | Yes |
| design tested acc. to type of protection / EEx e | Yes |
| overvoltage category | 2 |
| degree of pollution | 2 |
| combustibility class according to UL 94 | V1 |
Standards, specifications, approvals / Environmental Product Declaration 5
| Environmental Product Declaration | Yes |
|---|---|
| global warming potential [CO2 eq]: total | 94.7 kg |
| global warming potential [CO2 eq]: during manufacturing | 2.7 kg |
| global warming potential [CO2 eq]: during operation | 91.6 kg |
| global warming potential [CO2 eq]: after end of life | 0.26 kg |
Ambient conditions 2
| ambient temperature: during operation | 0 ... 60 °C |
|---|---|
| ambient temperature: during storage | -40 ... +70 |
Mechanical data 8
| width × height × depth | 175 mm × 76 mm × 60 mm |
|---|---|
| mounting type | DIN rail 35 mm, DIN rail 15 mm |
| mounting position | any |
| height / with lowest-profile installation | 60 mm |
| insulation material | other |
| color: of the enclosure | grey |
| color: of the light source | other |
| product component / required / end cover plate | No |
Additional information 2
| other information | Specifications at rated input voltage and ambient temperature +25 °C (unless otherwise specified) |
|---|---|
| marketing text | The TP3 connection module for a 3-wire connection with 32 channels and potential connection with push-in terminals with LED for signalling forms the interface between the connection cables of the peripherals brought in from the field and the SIMATIC S7. This is mounted on the DIN rail and, thanks to its functionality with push-in terminals, is precisely adapted to the respective task. This connection module 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 S7-300/1500 via cable and front plug-in module. |
Version Classification 5
| eClass | 16 27-25-01-12 |
|---|---|
| ETIM | 10 EC000900 |
| UNSPSC | 15 39-12-14-10 |
| Approvals / Certificates | For use in hazard- |
| General Product Approval | ous locations |
Logistics 6
| Net weight | 0.34 kg |
|---|---|
| Country of origin | Romania |
| Shipping weight | 0.84 kg |
| Ships from | Türkiye |
| Dispatch | — |
| Stock | On request |
Source: manufacturer data · Last verified: 01 Nov 2026
Documents
Documents for 6ES7924-2CA20-0BC0
No documents are on file for this part yet.
Ask us for the datasheet
Certifications
Certifications and standards
- ATEX
- cULus approval
- IECEx
- ULhazloc approval
- UKEX
- CCC / for hazardous zone according to GB standard
- design tested acc. to type of protection / EEx e
- Environmental Product Declaration
Quick answers
Questions about the Fully modular connection
What is the rated current of Fully modular connection?
The rated current of Fully modular connection is 2 A.
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 85366990.
What is the EAN of Fully modular connection?
The EAN (GTIN) of Fully modular connection is 4025515153870.
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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Siemens SIMATIC TOP connect
- Brand
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- Series
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