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Siemens 7SR5421-3AD26-0AA0

MPN7SR5421-3AD26-0AA0

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Transformer prot. 7SR54 8 curr. trans., 4 volt. trans., 8 TSI (Temperature Sensor Input), 22 BI, 12 BO Standard interface: 1 x USB (front), RS 485 (rear) + 2 x RJ45 interfaces, S12 enclosure

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Siemens 7SR5421-3AD26-0AA0 datasheet (PDF)

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Independent China distributor & sourcing agent· Listing updated Sep 2026

Specifications

7SR5421-3AD26-0AA0 — Mechanical
Parameter	Value
Width	308 mm
Height	177 mm
Depth	217.5 mm

Pricing & Availability

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About the brand

Siemens

Siemens parts are sourced across every condition — factory-new current-production lines, new-old-stock, surplus, refurbished-and-bench-tested and used clean-pull units — through our independent distributor channels; each listing states its condition. Request a quote for live pricing, availability, and lead times.

View all Siemens 7SR5421 General Purpose Relays parts →

Siemens Series Alternatives & Replacements

Alternative models and sibling configurations in the same Siemens series. For obsolete or discontinued parts, these models can serve as compatible replacements or functional alternatives for plant maintenance.

Siemens 7SR5421-3AD26-0AA0

Specifications

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6ES7211-1BE40-0XB0

6ES7212-1BE40-0XB0