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
- 6ES7971-0BA00
Critical stock
Dispatch
Planned dispatch date. We aim to ship within 1 business day. Depending on warehouse workload it can take 2–3 business days.
· From Türkiye
0
SIMATIC S7-400Siemens 6ES7971-0BA00 SIMATIC S7-400 Backup Battery 3.6V/2.3AH PLC Accessory
Siemens 6ES7971-0BA00 backup battery, 3.6V/2.3AH, for SIMATIC S7-400 PS 405/PS 407 supplies.
Description
About the 6ES7971-0BA00
About the 6ES7971-0BA00
The Siemens 6ES7971-0BA00 is a 3.6 V, 2.3 Ah backup battery for the SIMATIC S7-400 power supply modules PS 405 (4 A/10 A/20 A) and PS 407 (4 A/10 A/20 A). It replaces the depleted backup cell inside these power supplies to maintain retentive memory during a mains interruption. Net weight is 25 g, and it ships from Germany.
Selection Notes
This battery is specified for the PS 405 and PS 407 supply families across their 4 A, 10 A and 20 A current ratings — the accessory listing ties it exclusively to S7-400 power supplies, not to other SIMATIC rack generations. Replace it as routine maintenance on an existing PS 405 or PS 407 unit rather than as a spare for a different power supply type.
Applications
Used inside SIMATIC S7-400 racks equipped with a PS 405 or PS 407 power supply, where the backup cell needs periodic replacement to keep the power supply's buffering function intact through mains interruptions.
Specification
Full specification
| Part number | 6ES7971-0BA00 |
|---|---|
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Active, in production |
| EAN | 4019169010238 |
| Shipping weight | 0.523 kg |
|---|
| HS code | 85065010 |
|---|---|
| Ships from | Türkiye |
| Dispatch | 13 Nov |
| Stock | Critical stock |
| Series | SIMATIC S7-400 |
|---|---|
| Product Type Designation | 3.6 V backup battery |
| Voltage | 3.6 V |
| Capacity | 2.3 Ah |
| Compatible Power Supplies | PS 405 4A/10A/20A, PS 407 4A/10A/20A |
| Net Weight | 25 g |
| Country of Origin | DE |
From the manufacturer description; the values above take precedence.
Documents
Documents for 6ES7971-0BA00
No documents are on file for this part yet.
Ask us for the datasheet
Quick answers
Questions about the 6ES7971-0BA00
What is the HS code of 6ES7971-0BA00 for customs?
The tariff (HS) code on file for 6ES7971-0BA00 is 85065010.
What is the EAN of 6ES7971-0BA00?
The EAN (GTIN) of 6ES7971-0BA00 is 4019169010238.
Where does 6ES7971-0BA00 ship from, and how fast?
6ES7971-0BA00 ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival. Stock items are dispatched within 1–2 business days.
Guides
Guides for PLC & controllers
Main Types of Programmable Logic Controllers: A Complete PLC Guide
Compare the 5 main PLC types, IEC 61131-3 languages, scan-time sizing, and brand options to choose the right controller for your plant. Shop at...
Programmable Logic Controller Guide: Selection, Application, and Maintenance for Engineers
PLC selection guide for engineers covering IEC 61131 compliance, Siemens, Rockwell, Schneider, ABB comparison, scan time sizing, and wiring. Shop at Stoklink.
Reviews
Customer reviews
Series
Siemens SIMATIC S7-400
- Brand
- Siemens
- Series
- SIMATIC S7-400
