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Product description

Siemens 6ES7 403-1TA01-0AA0 is an ER1 expansion rack for the SIMATIC S7-400 automation system. It is used to build an expansion station and provides 18 slots of single module width. Unlike universal central racks, the ER1 provides only a restricted P-/E/A-Bus. No interrupt lines are available; interrupts from installed modules therefore have no effect on the CPU. The rack also does not provide a 24-V supply to the modules. Modules that require a 24 V supply are consequently not intended for this rack type. Backup through the power-supply battery or a backup voltage applied externally to the CPU or receive IM is also unavailable. Siemens lists power-supply modules, receive IMs, and signal modules as usable groups, provided that the stated restrictions are observed. However, power-supply modules must not be used together with the receive IM 461-1. The rack measures 482.5 mm in width, 290 mm in height, and 27.5 mm in depth. The mounting rail is made of sheet steel; its weight is approximately 3.8 kg. These characteristics distinguish 6ES7 403-1TA01-0AA0 from the lighter aluminum variant 6ES7 403-1TA11-0AA0 and the shorter ER2 rack. For spare-parts procurement, the complete order number, rack material, number of slots, and existing bus structure must therefore be compared together. Before mounting, the receive IM, power supply, signal modules, grounding, control-cabinet space, and configured STEP-7 hardware configuration should also be checked. An existing ER1 can be replaced directly only when the connected modules do not require interrupt, 24-V, or backup functions that the rack does not provide.

Siemens 6ES7 403-1TA01-0AA0

Specifications

Manufacturer Siemens
Product range SIMATIC S7-400
Manufacturer/order/identification number 6ES7 403-1TA01-0AA0
Device type ER1 expansion rack
Design expansion rack for S7-400 stations
Slots 18 slots of single module width
Bus interface restricted P-/E/A-Bus
Interrupt and diagnostic lines not available
24-V power supply not provided to installed modules
Backup supply no battery or external CPU/IM backup
Permitted modules power supplies, receive IMs, and suitable signal modules
Power-supply restriction not together with receive IM 461-1
Rack material Sheet steel
Dimensions 482.5 x 290 x 27.5 mm
Weight approx. 3.8 kg
Control cabinet with PLC modules and automation components
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FAQ

Frequently asked questions

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Which modules can be used in the Siemens ER1?

Siemens lists power-supply modules, receive IMs, and suitable signal modules. The restrictions for interrupts, 24-V supply, and battery backup must be observed.

What are the dimensions of 6ES7 403-1TA01-0AA0?

The ER1 rack measures 482.5 x 290 x 27.5 mm, is made of sheet steel, and weighs approximately 3.8 kg.

Is there a guarantee?

Yes, we provide a 14-day functional guarantee for used items. This means the component must be operational when received.

Please note that the guarantee only applies when the warranty seal is undamaged.

If a defect occurs within 14 calendar days, please contact us in writing. Subject to availability, we will provide a replacement or refund the full purchase price after return.

Further details are provided in the terms and conditions supplied with your quotation.

How quickly do you dispatch and which shipping options are available?

We generally dispatch immediately - in many cases on the same working day. For particularly urgent requirements or machine downtime, we find a suitable solution as quickly as possible and provide a specific delivery window on request.

Express shipping or collection from our premises is also possible, depending on the situation. State your requirements during the ordering process or contact us directly.

We ship worldwide and work with reliable shipping partners, from parcel services to freight forwarding. Freight shipments normally require some preparation so the goods arrive safely and undamaged.

Which payment methods are available?

Payment is normally made by bank transfer against invoice. Payment is due within 10 calendar days of receiving the goods.

As a rule, we offer purchase on account for all customers. In individual cases, such as new customers or particularly high-value components, we may agree advance payment. This decision is made individually and communicated transparently.

Can we return items if they were ordered incorrectly?

Because we sell exclusively to business customers (B2B), there is no general right of return and no consumer right of withdrawal.

Please note that returns of functioning goods are generally excluded. In justified exceptional cases, we can assess an individual solution, but this is not the standard procedure.

Is there a discount when ordering several items?

For larger order quantities or several items of one type, we can offer individual discounts.

Simply send us a quick enquiry - we check availability and will gladly prepare a tailored quotation with quantity pricing.

Do you also purchase industrial spare parts?

Yes, we also purchase automation components, such as frequency inverters, PLC assemblies, panels, servo motors and CPUs. Components from Siemens, Lenze, Schneider Electric, Control Techniques or Heidenhain are especially sought after, and other brands are also possible.

The process is straightforward: email us an inventory list or overview photos at info@reha-industriekomponenten.de. We calculate a market-based purchase price and send you an offer.

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